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1997 GMC Jimmy reset computer

Tiny
FWITHERS
  • MEMBER
  • 1997 GMC JIMMY
Computer problem
1997 GMC Jimmy 6 cyl Four Wheel Drive Automatic

I've replaced my ecm with a used one, but I don't know how to tell if its bad or if I didn't reset it correctly.
Friday, July 16th, 2010 AT 2:01 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
GM PCM relearning

General Motors does not provide a specific procedure for driveability relearn. If a vehicle battery was disconnected for facilitating repairs or a Powertrain Control Module (PCM) was replaced, driving the vehicle will enable the PCM to relearn driveability. Inform your customer that he/she may experience driveability different from what they are accustomed to until the PCM completes it's relearn function.
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Friday, July 16th, 2010 AT 5:00 PM

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