Relearn key procedure fails after PCM replacing


Asked by May 16, 2016 at 08:38 PM about the 2007 GMC Canyon 2 Dr SLE1 Extended Cab 4WD

Question type: Maintenance & Repair

I replaced my PCM, i'm trying to make the relearn procedure but the security
lights never goes off after every 10 minutes. After the 30 minutes procedure
my gmc canyon 2007 never start again, any clue about the problem??
THanks in advance

2 Answers


What did you replace the PCM with? Reman unit? New unit? so it ran fine then you tried to program (VATS) 3 cycles and it failed? SERVICE THEFT DETERRENT SYSTEM... Right


Thanks for answer. I replace with a reman pcm. According to my key type i'm using a pass key 3. The company from i bought the pcm gave me a document with the relearn procedure and it's say after every 10minutes cycle the security light must go off but it never happened, i continue with the cycle but the light nevers goes off. After 30 minutes when i'd try to start the engine, it doesn't work and the security light is flashing. What do you think could be the problem?

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