91 gmc sierra after it warms it will shut off at red lights, stops,and in traffic .i keep my foot on the gas to keep it runnig

Asked by Jul 18, 2013 at 10:56 PM about the 1991 GMC Sierra 1500 C1500 SLE Standard Cab Stepside SB

Question type: Maintenance & Repair

How do i fix it

1 Answer

107,345

Sounds like idle air control valve needs cleaning or replaced. Could also be throttle position sensor.

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