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Check Engine Soon Light
1997 GMC Safari code P0121 service engine soon light
1997 GMC SAFARI
Po121 code for 1997 gmc safari what do I need to fix for this code to disappear?
have the same problem?
Sunday, February 27th, 2011 AT 2:39 PM
That's indicating a problem in the TPS circuit somewhere. It could be the sensor itself, the throttle body, the PCM or any related wiring. It would have to be troubleshooted.
Sunday, February 27th, 2011 AT 3:29 PM
What is a TPS circuit
Friday, March 4th, 2011 AT 9:19 PM
It's everything in the system that has anything to do with the TPS.
Friday, March 4th, 2011 AT 9:21 PM
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