I HAVE A a 95 GMC SIERRA 1500 PROBLEM

Asked by Silenzyo Jan 04, 2016 at 01:40 PM about the 1995 GMC Sierra 1500 C1500 SL Standard Cab SB

Question type: Maintenance & Repair

I HAVE NO CLUE WERE TO START  I NEED THE TRUCK
SMOG BUT WHEN WE HOOK THE SCANNER UP IT
GAVE ME THIS CODES:

DTC-22 THROTTLE POSITION SENSOR VOLTAGE IS
LOW

DTC-45 IDLE AIR CONTROL SYSTEM CANNOT SET
DESIRE RPM

ANY HELP WOULD BE AWESOME THANK YOU FOR
YOUR TIME..

2 Answers
221,015

Rowefast answered 8 years ago

Have you tried replacing these sensors? That is what the codes indicate. When replacing the IAC that port needs to be cleaned up good also.

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mikeatpriestlake answered 8 years ago

Rowefast is right, they probably need changed, but if you want to test them first you can go to easyautodiagnostics.com and there are step by step procedures for testing using a multi meter.

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