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Tuner
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Tuner
first off i assume that when you replaced the "busted" pcm you had the replacement pcm reflashed to the correct vehicle vin/calibration
this requires either a j2534 device or a tech 2
you need to do a theft relearn procedure
there is a 10 minute procedure for a tech 2 but you probobly dont have one
like i do
30-Minute Relearn Procedure
Use this procedure after replacing any of the following components:
The PASS-Key III plus keys
The theft deterrent module (TDM)
The powertrain control module (PCM)
Theft Deterrent - G6
This procedure is not available on vehicles equipped with EXPORT configured TDMs. When performing the 30-minute relearn procedure, all previously learned keys will be erased from the TDM memory. Additional keys may be learned after performing the relearn procedure. When replacing a TDM with a GM SPO Replacement Part, ensure the procedure to setup a new TDM is performed prior to the 30-Minute Relearn Procedure.
1.With a master vehicle key, turn ON the ignition, with the engine OFF.
2.Observe the security indicator. After approximately 10 minutes, the telltale will turn OFF.
3.Turn OFF the ignition, and wait 5 seconds.
4.Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
IMPORTANT:The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to RUN. You must turn the ignition OFF before attempting to start the vehicle.
5.With a master vehicle key, start the vehicle. The vehicle has now learned the key transponder information and/or the ECM has now learned the fuel continue password.
6.If additional keys are required to be learned, refer to Adding Keys.
7.With a scan tool, clear any DTCs.