2004 GMC Envoy Hello

Tiny
KEYASHA
  • MEMBER
  • 2004 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 76,000 MILES
IF SOMEONE COULD PLEASE HELP ME OUT. MY PROBLEM IS A COUPLE WEEKS AGO MY CAR WENT INTO THIS MODE TO WHERE IT WOULD NOT GO OVER 10MPH AND THE REDUCE ENGINE POWER AND SERVICE ENGINE SOON LIGHT CAME ON. THEN THE NEXT DAY IT WAS FINE FOR ABOUT 2WKS. IN THIS TIMEFRAME, I GOT A CODE P1680. NOW I STARTED MY CAR AND IT CUT OFF ON ME WHILE DRIVING DOWN THE STREET. THEN I STARTED THE CAR BACK UP AND GOT IT HOME THEN IT CUT OFF AS I WAS PULLING INTO THE DRIVEWAY. PLEASE HELP:o(
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Thursday, April 16th, 2009 AT 5:47 PM

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Tiny
RASMATAZ
  • MEMBER
You should take this vehicle to the dealer. Autozone is not a place to take your vehicle to be fixed or diagnosed. People at autozone sell parts they dont fix vehicles. Dont put an ecm in this vehicle without proper diag.P1680 is an accelerator pedal position code. Here is a bulletin that might help. Service Engine Soon Light On, P1680 (Reprogram or Replace PCM)

Models: 2004 Buick Rainier

2004 Chevrolet Trailblazer

2004 GMC Envoy

2004 Oldsmobile Bravada

with 4.2L Engine (VIN S - RPO LL8) Some customers may comment on the Service Engine Soon Light coming on. Upon investigation, the technician may find a P1680 diagnostic trouble code.

Correction
Check the resistance of the accelerator pedal position sensors using the procedure in the appropriate Service Information for DTC P1680.

If the resistance of the accelerator pedal position sensor is within the specifications shown in the Service Information and the vehicle was built prior to the following VIN breakpoints, then reprogram the PCM with the latest calibration.

If the resistance of the accelerator pedal position sensor is within the specifications shown in the Service Information and the vehicle was built after the following VIN breakpoints, then replace the PCM. If the resistance of the accelerator pedal position sensor is outside the specifications shown in the Service Information, then continue with the diagnostics for DTC P1680. VIN Breakpoints

" Vehicles built at Oklahoma City Assembly Plant - 46192755

" Vehicles built at Moraine Assembly Plant - 42315833 post back with what you find. My advise take it to a professional.
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Thursday, April 16th, 2009 AT 5:57 PM

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