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J BODY, what does it mean?
Monday, March 21, 2005 7:59 AM
why are sunfires and cavaliers actually called J BODYs?

Re: J BODY, what does it mean?
Monday, March 21, 2005 8:02 AM
They are called J-Bodies because thats the unibody frame that they were all built off of. GM creates letter designations for all thier frames, N Bodies are Grand Ams, Berretta's, Malibu's, F Bodies are things like the Trans Am, Firebird, and I believe the Camaro. The new Cobalt is a Delta Body.





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Re: J BODY, what does it mean?
Monday, March 21, 2005 12:57 PM
G-A are N body, Beretta and Corsica are L body



Gilles
2.3 Ho

Re: J BODY, what does it mean?
Monday, March 21, 2005 5:25 PM
impalas are b-bodies i believe



Re: J BODY, what does it mean?
Tuesday, March 22, 2005 6:39 AM
No, the current Impala is a W-Body along with the Monte Carlo, Grand Prix, and Regal.






Re: J BODY, what does it mean?
Wednesday, March 23, 2005 11:24 AM
i want a Z-body
lol



Re: J BODY, what does it mean?
Thursday, March 24, 2005 2:26 PM
A-Cobalt,Pursuit
B=Aztek
H=Bonneville
F=Camaro,Firebird
J=Cavalier,Sunfire,Optra
L=Equinox
N=Malibu (Classic Style),Grand Am
S=Vibe
T=Aveo,Wave
U=Venture APV,Uplander 4X2,Montana APV,SV-6 4X2
V=Epica,GTO
W=Impala,Monte Carlo,Grand Prix
X=Uplander 4X4,SV-6 4X4
Y=Corvette
Z=Malibu,G6
Wanna know anything else?



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Friday, March 25, 2005 8:06 AM
Umm... Dan... not sure where you got that list but it's not accurate.

First off, GM has now moved away from using the Roman letter designations so new platforms are now using Greek letters.

Cobalt/Pursuit = Delta Platform.
New Malibu/G4 = Epsilon Platform.

I didn't read through the rest of your list to see what else might be wrong.

I wonder if you might have got that from a VIN decoding guide or something... which is not directly related to the platform names.





Re: J BODY, what does it mean?
Friday, March 25, 2005 9:40 AM
Actually,
If you walk into a GM dealership they would probably just look at you. I have a GM catalog (The computers GM dealerships have in the parts departments) and I got all of them from the computer.



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Friday, March 25, 2005 5:33 PM
Quote:

Actually,
If you walk into a GM dealership they would probably just look at you. I have a GM catalog (The computers GM dealerships have in the parts departments) and I got all of them from the computer.


That may be true - but as Wild Weasel mentioned, that information is not accurate. The Roman letters only apply to the old GM models, such as the Cavalier, Camaro/Firebird, Grand Am, ect.

All the new GM models are designated by the Greek letters. They are no longer referred to as "bodies" either - they are now "Platforms", which makes a lot more sense.

Even though your dealership catalog lists them like that, it does not mean that it is the same system that GM is now using. The dealerships probably have their own vehicle codes, which do not coinside with GM's official vehicle designations.







My CarDomain Page
Re: J BODY, what does it mean?
Friday, March 25, 2005 5:35 PM
Actually, try this on for size. Google Search.. I have the SI and I can't crap listing all of them.

For your reading pleasure....

J-Body------------------------------------------
The J platform, or J-body, was General Motors' inexpensive front wheel drive automobile platform from the 1980s and 1990s. The platform replaced the GM H platform. The first J-body car was the Cavalier, which was released on March 21, 1981. The Cavalier was phased out at the end of 2005 in favor of the new Chevrolet Cobalt. The last surviving J-body car, the Mexico-built Pontiac Sunfire, will end production in June of 2005. There are three generations of J-body cars: 1983–1987, 1988–1994, and 1995–2005.

The fourth character in the Vehicle Identification Number for a J-body car is "J".

Many vehicles used this platform including the following American nameplates:

1982 Pontiac J2000
1982–1988 Cadillac Cimarron
1982–1988 Oldsmobile Firenza
1982–1989 Buick SkyHawk
1982–2005 Chevrolet Cavalier
1983 Pontiac 2000
1983–1984 Pontiac 2000 Sunbird
1985–1994 Pontiac Sunbird
1995–2005 Pontiac Sunfire
International J-bodies include:

1981–1988 Opel Ascona C (Europe)
1981–1988 Vauxhall Cavalier (United Kingdom)
1982–1985 Isuzu Aska (Japan)
1982–1989 Holden Camira (Australia)
1982–1990 Chevrolet Monza (Brazil)
1996–2000 Toyota Cavalier (Japan)
Daewoo Espero (Korea)
Opel Monza (South Africa)

X-Body ------------------------------------------------

There have been two X-body automobile platforms from General Motors. All X-bodies were small entry-level sedans.


Rear wheel drive
The rear wheel drive X-body underpinned the Chevrolet Nova and similar cars of the 1970s. It was also the basis for the Cadillac Seville's K platform. The wheelbase was 111 in and many components were shared with the contemporary F platform.

Applications:

Buick Apollo
Chevrolet Nova
Oldsmobile Omega
Pontiac Ventura
[edit]
Front wheel drive
The front wheel drive X-body was used for compact cars from 1980 to 1985. The X-body program was widely considered a failure at the time, but the derivative FWD GM A platform, which replaced the X for 1985, continued for over a decade. Interestingly, only the Skylark name was carried over to the A-body.

Vehicles using the X-body include:

1980-1984 Oldsmobile Omega
1980-1984 Pontiac Phoenix
1980-1985 Buick Skylark
1980-1985 Chevrolet Citation

N-Body--------------------------------

The General Motors N platform (commonly called N-Body) was a front wheel drive compact car automobile platform produced from 1985 through 2004. The N platform replaced the GM X platform in 1985. It used a solid axle rear suspension and MacPherson struts in front. The first-generation (103.4 in wheelbase) platform was used for the following vehicles:


1985-1987 Buick Somerset
1985-1991 Oldsmobile Cutlass Calais
1985-1998 Pontiac Grand Am
1986-1998 Buick Skylark
1992-1998 Oldsmobile Achieva
An updated N platform with a longer wheelbase and fully independent suspension debuted in 1997 and also replaced the (nearly identical) L-body and A-body. The second-generation platform, called the GMX130, had a 107 in wheelbase and was used in the following vehicles:


1997-1999 Oldsmobile Cutlass
1997-2003 Chevrolet Malibu
1999-2004 Oldsmobile Alero
1999-2005 Pontiac Grand Am
2004-current Chevrolet Classic-continuation of the "N" Malibu for fleet use.
The N-body will be replaced completely by the Epsilon platform in 2006.

L-Body------------------------------------

The General Motors L platform (commonly called L-Body) was a compact car automobile platform produced from 1987 through 1996. The L-body was essentially identical to the N-body platform used by other GM divisions with the same 103.4 in wheelbase and rear beam suspension.

The L-body platform lasted just one generation, with the nameplates retired and replaced by the N-body Chevrolet Malibu sedan.

This platform was the basis for the following vehicles:

1987-1992 Pontiac Tempest (Canadian)
1987-1996 Chevrolet Beretta Coupe
1987-1996 Chevrolet Corsica Sedan

A-Body--------------------------------------

The General Motors A platform (commonly called A-Body) was a midsize car automobile platform. The A-bodies evolved from rear wheel drive compact cars to front wheel drive midsize sedans over the course of 35 years. The switch in drive layout in 1982 spawned the G-body. In the end, every A-body car line was cancelled, but new nameplates on the GM Epsilon platform have taken their place.

[edit]
1961
The first A platform was a "compact" (for the time) platform for the FR layout 1961 Buick Special, Oldsmobile Cutlass, and Pontiac Tempest and RR layout Chevrolet Corvair. It grew through the 1960s and 1970s as a rear wheel drive platform, finally to be discontinued for 1982. High sales, however, kept the platform alive as the re-named G-Body.

This single family of cars contained more innovative features than all other American products of the decade. Each model contained at least one notable advance:

The Corvair's rear-mounted air-cooled flat-6 engine was the first American use of this engine design and location.
The aluminum Buick/Oldsmobile 215 in³ V8 was the smallest-ever American V8 and father of the Rover V8 engine.
Both of these engines were turbocharged in 1962, making the Turbo Jetfire the first factory turbo engine.
Buick also introduced the first American V6 engine in 1962.
Pontiac's Tempest had an innovative rear-mounted transaxle and flexible driveshaft, the first with this drivetrain design.
Pontiac also had a notable half-V8 195 in³ I4, the largest straight-4 engine ever produced. The 1963 Tempest Le Mans was also the prototype for future muscle cars.
Ironically, every one of these new features was declared a failure and abandoned within a few years.

The original A-bodies were widely celebrated: The Corvair was Motor Trend magazine's Car of the Year for 1960, the Tempest won in 1961, and the V6 Special won in 1962.

[edit]
1982
The first front wheel drive A platform was built from 1982 to 1997. This A-Body consisted of 4-Door sedan, 2-Door sedan and station wagon bodystyles. It was updated in 1989 with a slightly longer wheelbase.

Applications:

104.5 in wheelbase:
1982-1990 Chevrolet Celebrity
1982-1991 Pontiac 6000
1982-1990 Buick Century
1982-1990 Oldsmobile Cutlass Ciera
1982-1990 Oldsmobile Cutlass Cruiser (station wagon)
104.9 in wheelbase:
1989-1996 Buick Century
1989-1995 Oldsmobile Cutlass Ciera
1989-1995 Oldsmobile Cutlass Cruiser (station wagon)
1996 Oldsmobile Ciera (final year of the Cutlass Ciera/Cutlass Cruiser with "Cutlass" dropped)
1990-1996 Chevrolet Lumina APV 1990-1996 Pontiac Trans Sport 1990-1996 Oldsmobile Silhouette

W-Body-------------------------------------

The W-body is a automobile platform from General Motors which underpins midsize cars with front wheel drive. The platform debuted as the GM10 program in 1988 with the Pontiac Grand Prix and Oldsmobile Cutlass Supreme coupes. Sedans follow in 1989. The later revision of this platform was known as the MS2000 or simply the W2-Car.

Vehicles using the W-body include:

107.5 in wheelbase:
1988-2004 Buick Regal
1988-1997 Oldsmobile Cutlass Supreme
1988-1996 Pontiac Grand Prix
1990-2001 Chevrolet Lumina
1995-1999 Chevrolet Monte Carlo
109 in wheelbase
2000-present Chevrolet Monte Carlo
1998-2002 Oldsmobile Intrigue
110.5 in wheelbase
2000-present Chevrolet Impala
1997-2003 Pontiac Grand Prix
[edit]
2004
The W platform was updated in 2004 rather than a planned stretched Epsilon. The cars will be built at GM's two Oshawa, Ontario plants. It is likely that the replacement for the Pontiac Grand Prix, to be called the G8, will also use this new W platform.

Vehicles using the updated W platform:

110.5 in wheelbase
2004-2006 Pontiac Grand Prix
2005 Buick LaCrosse
2006 Chevrolet Impala
2006 Chevrolet Monte Carlo

H-Body-------------------------------------------

The H platform, or H-body, name has been used twice by General Motors. The 1970s H-body was an inexpensive rear wheel drive compact automobile platform from the 1970s. The 1990s H-body was a front wheel drive full-size car platform.

Contents [showhide]
1 1970s

1.1 External link


2 1980s

3 See also

[edit]
1970s
The 1970s H-bodies had 4-, 6-, and 8-cylinder longitudinal GM engines, a solid rear axle, and were unibody. The Chevrolet Vega was designed to use the small-block V8, but this was not approved. Chevrolet Monza was originally designed to use a Wankel engine but this project was cancelled. No H-body had 4 doors, though wagon versions were offered. The fourth character in the Vehicle Identification Number for an H-body car is "H". The platform was introduced with the 1971 Chevrolet Vega and replaced with the GM J platform in 1981.

Many vehicles used this platform including the following American nameplates:

1971-1977 Chevrolet Vega/Pontiac Astre
1975-1980 Chevrolet Monza/Buick SkyHawk/Oldsmobile Starfire/Pontiac Sunbird



[edit]
External link
H-Body.Org (http://www.h-body.org)
H-Body FAQ (http://h-body.org/library/hbodyfaq/index.html)
Bob Gumm's V-8 Monza Site & Message Board (http://www.v8monza.com)
[edit]
1980s
The 1980s H-bodies were large front wheel drive cars with a 110.8 in wheelbase. Most H-bodies used GM's large 3800 V6, and supercharged versions were introduced later.

The following vehicles used this platform:

Years Wheelbase Model Previous platform Next platform
1986-1999 110.8 in Buick LeSabre GM B platform GM G platform
1986-1988 110.8 in Delta 88 GM B platform Retired
1992-1996 110.8 in Oldsmobile 88 Royale Retired
1989-1999 110.8 in Oldsmobile 88 Retired
1996-1999 110.8 in Oldsmobile LSS Retired
1997-1998 110.8 in Oldsmobile Regency Retired
1987-1999 110.8 in Pontiac Bonneville GM G platform GM G platform

G-Body--------------------------------------

The General Motors G platform (also called G-Body) automobile platform name was used twice. The current G-bodies use the front wheel drive version.

Contents [showhide]
1 RWD

1.1 Vehicles
1.2 Performance vehicles


2 FWD

[edit]
RWD
The first G-bodies were rear wheel drive and built from 1982 to 1988. This generation of cars actually began production in 1978 under the A-Body classification. The FWD A-Body was supposed to replace the old RWD A-Body cars in '82 but due to high sales, the RWD cars remained in production under the classification G-Body until they were replaced in 1988 with the new long-wheelbase GM W-Body platform.

The coupes with formal rooflines (Monte Carlo, Grand Prix, Cutlass Supreme, Cutlass Supreme Classic (1988), Cutlass Calais (until 1985), Cutlass Salon (1986-1987) and Regal) were dubbed G-Special. These Specials were known as A-Special prior to 1982.

[edit]
Vehicles
This family consisted of:

Buick Century (A-car period only)
Buick Grand National (G-car period only)
Buick Regal
Chevrolet El Camino
Chevrolet Malibu
Chevrolet Monte Carlo
GMC Caballero
Oldsmobile Cutlass
Oldsmobile Cutlass Supreme
Oldsmobile Cutlass Calais
Oldsmobile Cutlass Salon
Pontiac Bonneville (G-car period only)
Pontiac Grand Prix
Pontiac Grand Am (A-car period only)
Pontiac Le Mans (A-car period only)
[edit]
Performance vehicles
Performance applications include:

1978-1980 Oldsmobile 442 5.7L (350 in³) V8
1978-1983 Buick Regal Sport Coupe 3.8L (231 in³) V6 Turbo
1978-1987 Chevrolet El Camino SS 5.0L (305 in³)/5.7L (350 in³) V8
1979 Oldsmobile Hurst/Olds 5.7L (350 in³) V8
1980 Chevrolet Malibu M80 5.0L (305 in³) V8
1983-1984 Oldsmobile Hurst/Olds 5.0L (307 in³) HO V8
There is also speculation that 3 Hurst/Olds editions were made using 1988 Cutlass Supreme Classic bodies. These were not marketed through GM though. There was also a Hurst/Olds body kit available in 1988.
1983-1988 Chevrolet Monte Carlo SS 5.0L (305 in³) HO V8
1984-1986 Buick Regal T-Type 3.8L (231 in³) V6 Turbo
1984-1987 Buick Grand National 3.8L (231 in³) V6 Turbo
1985-1987 Oldsmobile 442 5.0L (307 in³) HO V8
1986-1987 Chevrolet Monte Carlo SS Aerocoupe 5.0L (305 in³) HO V8
1986.5 Pontiac Grand Prix 2+2 5.0L (305 in³) V8
The 1986.5 Grand Prix 2+2 cosmetic features which included a NASCAR qualifying nose-cone was also available through GM for installation on any 1981-1987 Grand Prix. There were 17 Grand Prix GTs offered by Mertyle Motors in New York which offered a slightly different look and had some performance tuning in 1986.
1987 Buick Regal T Turbo 3.8L (231 in³) V6 Turbo
1987 Buick Regal T (307 in³)
1987 Buick Regal many base and Limited models featured the 3.8L (231 in³) V6 Turbo
1987 Buick GNX 3.8L (231 in³) V6 Turbo
The 1987 GNX was made in conjunction with ASC/McLaren and 547 were made and included a unique suspension system, featured fender flares, had Stewart-Warner guages, and 276 net horsepower (above the 245 of the regular Grand National). There are many more features that set the GNX apart and are too many to list.
[edit]
FWD
The second G-body platform (the GMX690) was used for front wheel drive luxury cars from 1995. The new G-body was based on Cadillac's K-body architecture. The Buick Riviera moved up from the GM E platform, while the Oldsmobile Aurora was a new model. The Buick Park Avenue migrated to the G-body in 1997 and remained unchanged until its demise for 2005. The G platform was refreshed for 2000 and a two more large sedans moved to it, the Buick LeSabre and Pontiac Bonneville. With the demise of the Bonneville, Park Avenue, and LeSabre in 2006, the only remaining G-body car will be the Buick Lucerne.

Applications:

Years Wheelbase Model Previous platform
1995-1999 113.8 in Buick Riviera GM E platform
1995-1999 113.8 in Oldsmobile Aurora New
1997-2005 113.8 in Buick Park Avenue GM C platform
2000-2003 112.2 in Oldsmobile Aurora
2000-2005 112.2 in Buick LeSabre GM H platform
2000-2005 112.2 in Pontiac Bonneville GM H platform

C-Body----------------------------------------------------

The General Motors C platform (commonly called C-Body) was a fullsize car automobile platform produced from 1985 through 1996. It was similar to the GM H platform, with both using the same 110.8 in wheelbase. Most C-body vehicles were moved to the GM G platform or GM K platform in the mid-1990s.

This platform was the basis for the following vehicles:

1987-1990 Buick Electra Park Avenue
1985-1988 Cadillac Deville sedan
1985-1993 Cadillac Deville coupe
1971-1984 Oldsmobile 98
1991-1996 Buick Park Avenue

K-Body------------------------------------------------------

The General Motors K platform (commonly called K-Body) was the basis of the Cadillac Seville model over two entirely different automobile platforms.

[edit]
Rear wheel drive
The rear wheel drive K platform was based on the X-body Chevrolet Nova and shared components with the F-bodies of the 1970s. It used a stretched 114.3 in wheelbase, a simple front double A-arm suspension with a solid axle and leaf springs in the rear. It was the basis of the successful Cadillac Seville of that era. The platform used unibody construction with a front subframe assembly, a design which first appeared in 1967 on the first F-body Chevrolet Camaro.

[edit]
Front wheel drive
The front wheel drive K-body was used for full-size Cadillacs from 1979 through 2004. K-bodies were sedans; coupes used the identical GM E platform.

The K platform was updated in 1997 with improved suspension geometry. These cars were replaced with the rear wheel drive GM Sigma platform Cadillac STS for 2005.

Unlike most GM platforms, the K was not shared by multiple divisions (though the E was). Technically, though, the architecture was shared under a different name: the GM G platform was based on the K and produced at the same time.

113.8 in wheelbase (basis for 1995 GM G platform)
1989-1993 Cadillac Deville (sedan, not coupe)
1994-1999 Cadillac Deville
111 in wheelbase
1992-1997 Cadillac Seville
112.2 in wheelbase (basis for 2000 GM G platform)
1998-2004 Cadillac Seville
115.3 in wheelbase
2000-2004 Cadillac Deville

E-Body-------------------------------------------------

The General Motors E platform (commonly called E-Body) was a front wheel drive personal luxury car automobile platform produced from 1979 through 2002. It was essentially identical to Cadillac's K platform, but that was dedicated to sedans, while all E-bodies were coupes. A smaller version, the GM V platform, was produced for two "halo cars", the Buick Reatta and Cadillac Allante. These only lasted from 1987 through 1993, however.

Previous E-bodies date back to the 1966 introduction of the Buick Riviera and Oldsmobile Toronado, two groundbreaking front wheel drive cars. The only vehicle to survive the E-body was the Riviera, which moved to the GM G platform for its final years.

This platform was the basis for the following vehicles:

1979-1985 Cadillac Eldorado
1986-1991 Cadillac Eldorado
1992-2002 Cadillac Eldorado
1966-1989 Oldsmobile Toronado
1990-1992 Oldsmobile Toronado
1966-1976 Buick Riviera
1988-1993 Buick Riviera

V-Body--------------------------------------------------------

The V platform, or V-body, automobile platform name was used twice by General Motors.

[edit]
1978-1988/1989-1993/1994-present
The first V-Bodies were rear wheel drive cars and have been ever since. The fourth character in the Vehicle Identification Number for a V-body car is "V".

Many vehicles used this platform including the following nameplates:

Opel Monza (Europe)
Opel Senator Coupe (Europe)
Opel Omega (Europe)
Holden Commodore (Australia)
Holden Monaro (Australia)
Holden Statesman/Caprice (Australia)
Cadillac Catera (1997-2002 built in Germany)
Chevrolet Caprice (2000- )(Middle East export only built in Australia)
Chevrolet Lumina (2000- )(built in Australia for export)
Chevrolet Commodore (built in Australia for South Africa)
Chevrolet Omega (built in Australia for South America/Brazil)
Vauxhall Carlton (United Kingdom)
Pontiac GTO (2004- ) (built in Australia for U.S.A., unavailable in Canada)
Buick Royaum (2005- ) (Caprice-platform built in Australia for General Motors China)
[edit]
1987
The North American front wheel drive V-Body was used by a pair of halo cars. It was a downsized version of the E-body used in the Buick Riviera and Cadillac Eldorado. Both were personal luxury cars and were sold in limited numbers.

Applications:

1988-1991 Buick Reatta 98.5 in (2,502 mm) wheelbase
1987-1993 Cadillac Allante 99.4 in (2,525 mm) wheelbase

U-Body---------------------------------------

The U platform is a generic name for General Motors' minivan platform.

[edit]
1997
The GMX110 was created in 1997 as GM's minivan platform, with a replacement for the Lumina APV. Cars that ride on this platform are the Chevrolet Venture, Oldsmobile Silhouette, Pontiac Trans Sport Montana, and the Pontiac Montana, which permanently dropped the Trans Sport name in 1999.

[edit]
2005
The U-body was updated, once again, with 3 new vehicles added to the lineup. Now classified as a "mid-van crossover vehicle", the U-body now consists of: Buick Terraza, Chevrolet Uplander, Pontiac Montana, and the Saturn Relay. The Montana and Uplander is built in Atlanta, Georgia, and the Terraza and Relay is built in Kansas City, Kansas.

T-Body-----------------------------------------

The General Motors T-car was an automobile platform for subcompact cars. It was the 1970s' most prolific world car programme. The T-cars were all rear-wheel drive unibody cars.

GM reused the T-body name in the 1990s on the front wheel drive Pontiac Le Mans, made by Daewoo. Daewoo itself retained the T designation when developing its own range of cars, the T100 representing the Daewoo Lanos.

[edit]
Complete list of GM T-cars
Argentina
Opel K-180
Australia
Holden Gemini
Brazil (exported to Argentina as the GMC Chevette, 1990–2)
Chevrolet Chevette
Chevrolet Marajó
Chevrolet Chevy 500
Colombia
Chevrolet San Remo
Ecuador
Aymesa Cóndor
Chevrolet Cargo
Germany
Opel Kadett B
Opel City
Opel Rallye
Japan (exported to North America as the Opel–Isuzu, Buick–Opel and Isuzu I-Mark)
Isuzu Bellett Gemini
Isuzu Gemini
South Korea (exported to Malaysia as the Opel Gemini)
Saehan Bird
Saehan Max
Daewoo Maepsy
Daewoo Max
UK (also exported in 1980–2 to Europe as the Opel Chevette)
Vauxhall Chevette
Bedford Chevanne (exported to New Zealand as the Vauxhall Chevanne)
United States (sold in Canada as the Pontiac Acadian until 1981)
Chevrolet Chevette
Pontiac T-1000
Pontiac 1000
Uruguay
Grumett Color

B-Body-------------------------------------------------------

The B platform, or B-body, was General Motors' full-size rear wheel drive automobile platform. It was closely related to the Cadillac D-body and was used for coupes, sedans, and station wagons.

The last B-cars rolled off the line in 1996, leaving only arch-rival Ford producing large rear wheel drive sedans. Today, however, the situation looks to reverse, with Ford switching to front wheel drive for most cars and GM reintroducing rear wheel drive with their new Sigma platform. Chrysler has also reintroduced rear wheel drive with their new LX platform.

Sedans built on the B platform include:

1971-1976 Oldsmobile 88
1977-1985 Oldsmobile 88
1988-1990 Chevrolet Caprice
1991-1993 Chevrolet Caprice
1994-1996 Chevrolet Caprice Classic
1992-1996 Buick Roadmaster
1994-1996 Chevrolet Impala SS
Station wagons include:

1988-1990 Chevrolet Caprice
1991-1993 Chevrolet Caprice
1994-1996 Chevrolet Caprice Classic
1977-1990 Oldsmobile Custom Cruiser
1991-1992 Oldsmobile Custom Cruiser
1988-1989 Buick Electra Estate
1986-1990 Buick Estate
1991-1996 Buick Roadmaster

D-Body-------------------------------------------------

The D platform, or D-body, was Cadillac' last full-size rear wheel drive automobile platform in the 1990s. It was closely related to the GM B platform, though the Cadillac used an extra-long 121.5 in wheelbase.

The last D-body Cadillac Brougham rolled off the line in 1992, leaving only arch-rival Lincoln producing large rear wheel drive luxury sedans. Today, however, the situation looks to reverse, with Lincoln switching to front wheel drive for most cars and Cadillac reintroducing rear wheel drive with their new Sigma platform. Chrysler has also reintroduced rear wheel drive with their new LX platform.

F-Body---------------------------------------------------

The F platform, or F-body, was General Motors' less-expensive rear wheel drive sports car automobile platform from the 1967 until 2002. The two vehicles based on this platform were the similar Chevrolet Camaro and Pontiac Firebird. The fourth character in the Vehicle Identification Number for an F-body car is "F". Another rear-wheel drive sports car, the Chevrolet Corvette, used GM's up-market Y-body.

Contents [showhide]
1 1st Generation

2 2nd Generation

3 3rd Generation

4 4th Generation

[edit]
1st Generation
The first F-body cars were produced in 1967, as GM's response to the Ford Mustang, and this type of lightweight, sporty yet inexpensive vehicle became known as "pony cars'. The last of this generation were made in 1969, as 1969 model year cars although many were re-VINed as 1970 model year cars as the new "Hugger" body was delayed until about February 1970. This generation came in hardtop and convertible models. The standard engine for 1967 was the 230 I6, which was stroked to 250CID for 1968.

[edit]
2nd Generation
The "Hugger" generation. The last Camaro SS was in 1972 and the Camaro Z28 dissapeared shortly thereafter. Dual exhaust was no longer available due to catalytic converter fitments required of all GM cars in 1975 which required single exhaust. The Camaro Z28 re-appeared in 1977 touting handling as the key feature.

The Firebird Trans Am with the SD-455 motor was the last high performance muscle motor of the original muscle car generation. It too was lost in 1977.

[edit]
3rd Generation
The third generation of F-body cars lasted from 1982 to 1992. Though on the exterior the difference between the Camaro and the Firebird was more pronounced than ever before, internally the two cars shared the exact same components save for a few special edition models.

3rd gen models of note: 1989 Turbo Trans Am, 1991-1992 Formula Firehawk.

[edit]
4th Generation
The fourth generation of F-body cars started in 1993 and lasted until the platform was cancelled in 2002.

The F-body was replaced by the GM V platfrom Holden Monaro-based Pontiac GTO but is not considered a pony car as the Firebird and Camaro were along with it's immediate competition: the Ford Mustang, original Mercury Cougar, AMC Javelin, Dodge Challenger and Plymouth Barracuda .

Y-Body---------------------------------------------------

The Y platform, or Y-body, is General Motors' high-end rear wheel drive automobile platform from the 1980s through the 2000s.

The fourth character in the Vehicle Identification Number for a Y-body car is "Y".

Only two Y-body cars have been produced:

Cadillac XLR
Chevrolet Corvette

Z-Body-----------------------------------------------------

The Z-body was Saturn's automobile platform from its debut in 1990. These General Motors vehicles were front wheel drive compact cars.

Vehicles using the Z-body include:

1990-2002 Saturn SC
1990-2002 Saturn SL
1990-2002 Saturn SW

M-Body------------------------------------------------------

General Motors used the M-body name internally to refer to its line of badge engineered cars built by Suzuki in the company's Ingersoll, Ontario, Canada factory.

M-body cars include:

Chevrolet Sprint
Geo Metro

P-Body------------------------------------------------------

General Motors used the P-body name internally to refer to its line of badge engineered cars built by Isuzu.

P-body cars include:

Chevrolet Spectrum
Geo Storm

S-Body---------------------------------------------------------

General Motors used the S-body name internally to refer to its line of badge engineered cars built with Toyota at the NUMMI plant.

S-body cars include:

Chevrolet Nova
Geo Prizm
Chevrolet Prizm

Gamma Platform---------------------------------------------

Gamma is General Motors' new subcompact front wheel drive automobile platform. The architecture was developed by Opel in Germany and was based on the Opel Corsa.

[edit]
Vehicles
Current vehicles based on this platform:

Opel Combo
Opel Corsa
Opel Tigra TwinTop
[edit]
Future
A new version of the Gamma platform, dubbed SCCS (Small Common Components and Systems), is being codeveloped since 2002 by a team of Fiat and Opel engineers located in Turin. The platform will be shared across 2005 Fiat Punto, 2006-2007 Opel/Vauxhall Corsa and future Fiat Idea, Lancia Ypsilon and Lancia Musa. Even after the dissolution of the GM/Fiat partnership, both companies retain the rights to continue developing SCCS-derived models.

GM Daewoo is seeking to develop a variant of this platform as a replacement for their subcompact Chevrolet Aveo.

Delta Platform------------------------------------------------

Delta is General Motors' new compact front wheel drive automobile platform. The architecture was developed with the help of Opel in Germany and is all new. The platform debuted in the 2003 Saturn ION.

[edit]
Vehicles
Current vehicles based on this platform:

2003 Saturn ION
2004 Opel Astra
2005 Chevrolet Cobalt
Future vehicles using this platform:

2006 Chevrolet HHR
Next generation Opel Zafira
Cancelled vehicles which were to use this platform:

Saab 9-2 - Saab gets a 9-2X instead, based on the Subaru Impreza WRX

Epsilon Platform------------------------------------

Epsilon is General Motors' new mid-size front wheel drive automobile platform. The architecture debuted in the 2003 Saab 9-3 and Opel Vectra. Since this platform falls squarely in the center of the worldwide automobile market, GM plans to produce a great many Epsilon vehicles with over a dozen variations. As of 2004, it is GM's highest volume worldwide platform (or architecture in GM-speak). Even after the dissolution of the GM/Fiat partnership, both companies retain the rights to continue developing Epsilon-derived models.

GM's Epsilon platform replaces the N platform in the US, beginning in 2006.

Many of the Epsilon vehicles will use the Ecotec I4 and V6 engines.

[edit]
Vehicles
Current vehicles based on this platform:

2003 Opel Vectra
2003 Saab 9-3
2004 Chevrolet Malibu
2004 Opel Signum
2005 Pontiac G6
Future vehicles using this platform:

2006 Saturn Aura
2007 Cadillac BLS (Europe only, small FWD sedan)
2007 Fiat Croma
2007 mid-size Holden
Cancelled vehicles which would have used this platform:

2006 Alfa Romeo Spider replacement (AWD)
2006 Smaller Buick
[edit]
Epsilon 2
A new version of the Epsilon, dubbed Epsilon 2, will debut in 2008. It will be used in the following vehicles:

2008 Opel Vectra
2009 Chevrolet Malibu
2009 Pontiac G6
2009 Saab 9-3
2009 Saturn
2010 Cadillac BLS (global)

Kappa Platform--------------------------------------------

Kappa is General Motors' new compact rear wheel drive automobile platform. The architecture will debut in the 2006 Pontiac Solstice and Saturn Sky, but it is unlikely that many other vehicles will use it.

[edit]
Vehicles
Current vehicles based on this platform:

none
Future vehicles using this platform:

2006 Pontiac Solstice
2006 Saturn Sky
Cancelled vehicles that were to use this platform:

Chevrolet Nomad
Vauxhall VX Lightning

Sigma Platform-------------------------------------------------

Sigma is General Motors' new full-size rear wheel drive automobile platform. The architecture debuted in 2002 with the 2003 Cadillac CTS and is adaptable for all wheel drive and extended wheelbase versions. Development of the Sigma platform began at Holden in Australia before 1998 as GWRD or Global World Rear Drive.

The long-wheelbase Cadillac STS replaced the front wheel drive GM K platform Cadillac Seville. The CTS was a replacement for the rear wheel drive Cadillac Catera.

[edit]
Vehicles
Current vehicles based on this platform:

2003 Cadillac CTS
2004 Cadillac SRX
2005 Cadillac STS
Future vehicles using this platform:


Cancelled Sigma vehicles:

Saab 9-7 - Saab will instead get a 9-7X based on the Chevrolet TrailBlazer
Buick LaCrosse - The Sigma LaCrosse idea was replaced with a renamed FWD Buick Regal.

Theta Platform----------------------------------------------

Theta is General Motors' new crossover SUV automobile platform. The architecture debuted in 2002 with the Saturn VUE and was later used for the Chevrolet Equinox and Suzuki XL7. The platform was developed by GM and Suzuki Motors, but a substantial part of work for upcoming 2006 Theta-based models was done by GM Daewoo and GM's Shanghai, China engineering operation, Pan-Asia Technical Automotive Center.

[edit]
Vehicles
Current vehicles based on this platform:

2002 Saturn VUE
2005 Chevrolet Equinox
Future vehicles based on this platform:

2006 Suzuki XL7
2006 Pontiac Torrent (Aztek replacement)
2006 unnamed Daewoo 7-passenger SUV, model C100 (Europe and South Korea only)

Lambda Platform-----------------------------------------------

Lambda is General Motors' future minivan/"sport wagon" automobile platform. The architecture will debut in 2007 with a Saturn and will later be used for the replacement for the Buick Rendezvous. Lambda vehicles will feature minivan-like three-row seating and SUV-like all wheel drive. Unlike the similar Theta crossover SUVs, however, Lambdas will offer less ground clearance and lean more heavily on front wheel drive models.

Lambda will replace the sedan-based Pontiac Aztek platform, shared by Buick, but Pontiac will not get a Lambda vehicle. Instead, GMC gets its first non-truck.

Lambda vehicles will be produced in a new factory in Delta Township near Lansing, Michigan.

[edit]
Vehicles
Future vehicles based on this platform:

2007 Saturn
2008 Buick Rendezvous replacement
2008 GMC sport wagon
Cancelled vehicles based on this platform:

2007 Pontiac sport wagon - will get the Theta Torrent instead.

Zeta Platform----------------------------------------------

Zeta is General Motors' new midsize rear wheel drive automobile platform. The architecture was engineered by Holden of Australia and debuts in 2004 with the 2005 Opel Insignia. It will be the underpinning of the next Holden Monaro and Pontiac GTO.

The future of the Zeta architecture is in question. In March, 2005, Robert Lutz reportedly (http://www.autoweek.com/news.cms?newsId=102031) directed all work on the platform and related vehicles to cease.

[edit]
Vehicles
Current vehicles based on the Zeta platform:

2005 Opel Insignia
Future vehicles using this platform:

Holden Monaro sedan/coupe
2007/2008 Pontiac GTO coupe
Buick Velite coupe/roadster
Buick Lausanne sedan
Cancelled vehicles:

2007 Buick Lucerne (will use the G-body instead)

GMT Platforms----------------------------------------

GMT is the name used for all of General Motors' large SUV/truck automobile platforms.

GMT190
The GMT190 name was applied to the Suzuki Vitara-derived Chevrolet Tracker.

[edit]
GMT250
Applications:

Buick Rendezvous
Pontiac Aztek
[edit]
GMT300
The GMT300 series was a compact truck line including pickup trucks and small SUVs.

GMT325
Chevrolet S10
GMC Sonoma
GMT330
Chevrolet Blazer
GMC Jimmy
Oldsmobile Bravada
[edit]
GMT355
The GMT355 is a redesigned compact pickup truck design. GMT355s are built in Shreveport, Louisiana and Rayong, Thailand.

Applications:

Chevrolet Colorado
Chevrolet LUV
GMC Canyon
Holden Rodeo
Hummer H3
Isuzu D-Max
[edit]
GMT360
Although it may not appear updated much in name, the GMT360, debuting in 2002 with the Oldsmobile Bravada, was an entirely new vehicle architecture from the GMT330 it replaced. It used hydroformed frame rails like the larger GMT800, and was built for GM's Atlas straight engines. The GMT360 (and long-wheelbase GMT370) went on to be one of the most badge-engineered GM products with six different marques represented.

Applications:

GMT360
Buick Ranier
Chevrolet SSR
Chevrolet TrailBlazer
GMC Envoy
Isuzu Ascender
Oldsmobile Bravada
Saab 9-7X
GMT370
Chevrolet TrailBlazer EXT
GMC Envoy XL
GMT305
GMC Envoy XUV
[edit]
GMT400
The GMT400 and similar GMT480 were the previous-generation full-size pickup truck platform. The GMT410, GMT420, GMT425, and GMT430 were used for full-size SUVs.

GMT400 frames were built by A.O. Smith Automotive Products, Dana Corporation, and Tower Automotive.

Applications:

GMT400/480
Chevrolet C/K
GMC Sierra
GMT410/420/425/430
Chevrolet Suburban
Chevrolet Tahoe
GMC Suburban
GMC Yukon
[edit]
GMT600
The GMT600 was used in the full-size Chevrolet Express vans.

Applications:

Chevrolet Express
GMC Savanna
[edit]
GMT800
The GMT800 and similar GMT880 is the basis for the current Chevrolet Silverado pickup truck. The derived GMT820 and GMT830 is used in the Suburban, among other large SUVs.

The GMT800 platform was introduced in 1999. Frames are manufactured by Magna International in Ramos Arizpe, Coahuila, Mexico and St. Thomas, Ontario, Canada. It uses three boxed-in hydroformed sections rather than a single long frame. This gives greater flexibility to the platform. A total of four front modules, seven midsections, and four rear sections were created to mix and match for nearly 40 different truck configurations.

Applications:

GMT800/880
Chevrolet Silverado
GMC Sierra
GMT820/830
Cadillac Escalade
Chevrolet Avalanche
Chevrolet Suburban
Chevrolet Tahoe
GMC Yukon
Hummer H2
[edit]
GMT900
The updated GMT900 will debut at the 2006 North American International Auto Show. The first GMT900 vehicle will be the next-generation Cadillac Escalade. The GMT900 series will feature standard vehicle stability control and will offer American Axle's "I-Ride" independent suspension module.



<img src="http://www.j-body.org/registry/americanred/deplysig.gif">

Re: J BODY, what does it mean?
Friday, March 25, 2005 9:38 PM
Ok go to your dealership and you tell me how they look up the Cobalt. I bet you they would type this EXACTLY. C05A



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Friday, March 25, 2005 9:47 PM
Dan wrote:

Ok go to your dealership and you tell me how they look up the Cobalt. I bet you they would type this EXACTLY. C05A


probably because they dont have an efficient way to type the appropriate greek symbol for delta into their computers.



Re: J BODY, what does it mean?
Friday, March 25, 2005 9:55 PM
grrr the 78-81 malibu's got left out of the g-bodys



Re: J BODY, what does it mean?
Saturday, March 26, 2005 11:25 AM
I just logged on to the SI and this is how you pull up the Cobalt...

Select Year 2005
Select Make Chevrolet
Select Model Cobalt

Click Next

Now I pulled up the Cobalt.....


<img src="http://www.j-body.org/registry/americanred/deplysig.gif">
Re: J BODY, what does it mean?
Saturday, March 26, 2005 5:40 PM
and where did you look this up at?



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Saturday, March 26, 2005 9:37 PM
General Motors Service Instruction and Customer Service Page. Same one the dealership uses to look up part numbers, service instructions, computer updates, campains, recalls, and anything else GM.

Thats where.


<img src="http://www.j-body.org/registry/americanred/deplysig.gif">
Re: J BODY, what does it mean?
Saturday, March 26, 2005 10:34 PM
Ok well ill wait for an update on my computer and ill let you know becasue as of now it doesnt look it up like that



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Saturday, March 26, 2005 10:46 PM
Dan is correct on this. Internally by GM, they still use a letter, commercially they use the Greek name. For example what we know as Epsilon (Malibu, Malibu Maxx, G6, 9-3, BLS) GM knows it as the Z platform.




>>>For Sale? Clicky!<<<
-----The orginal Mr.Goodwrench on the JBO since 11/99-----

Re: J BODY, what does it mean?
Sunday, March 27, 2005 1:02 AM
im gonna also have to go alonng with dan on this one cause i know very well that he knows this better than ne of u probly understand ,



Re: J BODY, what does it mean?
Sunday, March 27, 2005 9:08 AM
I never said Dan was wrong. I just pointed out what the platforms are through out GM history and what their names are. I can't find anything on the SI saying what the body names are on the G6 or Cobalt. For the Cavalier it says J Car.

Hmm, soryr if I came across as a Ahole.


<img src="http://www.j-body.org/registry/americanred/deplysig.gif">

Re: J BODY, what does it mean?
Sunday, March 27, 2005 9:22 AM
I never said you were wrong either im just sayin thats how the computer shows and all the other GM computers show up, I mean you are right they did go over to the other name but I didnt mean to confuse anyone.



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
Re: J BODY, what does it mean?
Tuesday, March 29, 2005 2:41 PM
Mr.Goodwrench-G.T. wrote:

Dan is correct on this. Internally by GM, they still use a letter, commercially they use the Greek name. For example what we know as Epsilon (Malibu, Malibu Maxx, G6, 9-3, BLS) GM knows it as the Z platform.




yep they both are correct...............Gm parts catalogs use the letters still.They always will.Alot of them get used over again.You really have to know what year ranges the letters corrispond with which model car.

example:

79-88 monte carlo's and like cars are "G" bodies.
95-99 Riviera's and Aurora's are also "G" bodies

79-96 Caprice's and Impala's are "B" bodies
01-05 Aztec's and Rendezous's are "B" bodies






I ain't callin u a gold digga,but you ain't messin wit a broke cracka
Re: J BODY, what does it mean?
Tuesday, March 29, 2005 4:55 PM
Dealerships use the GMVis to look up recalls.



*95 Z28 M6* *Free mods* *160 t-stat*New LT1 Crate motor 357*Edelbrock Headers*3" Flowmaster cat back* !CAT
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