2003 cavalier 60k on engine with auto tranny out of an 04 cavalier that had 60k on it. Throwing p1810 code. Anyone know anything about this code and what I need to do to fix it? Tranny shifts a little hard going from reverse to drive or vice versa. When shifting through gears it shifts a little harder than normal. Almost like the line pressure is a bit high. Kind of feels as if it has a shift kit in it. Is the 04 4t40 compatible with the 03 cavalier PCM and all or is there something else going on here?
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