Ignition swap won't allow car to start.
I have two 2003 Cavaliers. The coupe was in excellent shape but was totaled in an accident. The sedan has a blown motor (among other inferior condition) and received the coupes excellent components.
I have moved virtually every powertrain and suspension component from the coupe to the sedan. The recipient sedan's cluster was scratched so I moved the coupe�s over. I did move the ECM over to the sedan also assuming that it should be paired with the engine/tranny from the swap. The car ran at this point.
The recipient sedan�s ignition cylinder sticks and catches so I moved that over also. At that point it would no longer start. I attempted the 10 minute relearn procedure but it did not work.
So, I put the old ignition lock back in and got it running again.
Today I swapped the BCM from the coupe into the sedan and swapped the ignition locks again and now it won�t start again and the radio says �loc�.
The Theft warning light flashes 3 times then goes constant and all other idiot lights display constant. Cranking the car turns out all cluster lights except Theft and Check engine. The Theft light doesn�t flash for the 10 minute relearn.
What have I done incorrectly?

isn't the theft relearn 20 minutes with key on?...