I have a 1994 gmc Sierra sle k1500 and it's idling fast and I can't find out what is causing it

Asked by Mar 30, 2015 at 06:04 PM about the 1994 GMC Sierra 1500 C1500 SLE Standard Cab SB

Question type: Maintenance & Repair

I have checked for vaccum leaks and all
vaccum hoses

2 Answers

8,055

Do you have an engine light on? if so get it scanned

Best Answer Mark helpful
10

My advise is to replace the Air idle mixture valve. Easy fix. my 95 GMC had the same trouble after I replaced the intake gasket. It is cheap to replace $50.00 Simply unplug the wiring harness and un screw the old one, and replace it. Hope this was helpful

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