Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
do you have the code?
can you get them? did your mechanic attempt a security relearn
try a 30 minute relearn..
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)
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.
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.