1984 GMC Sierra Repair Question
Topics covered: Idle air control valve, Vacuum leak.
Mileage: 4,000 miles.
Mileage: 4,000 miles.
Asked on February 5, 2013
GMC Sierra Idle air control valve Problem
The idle is high and I've check for vacuum leak but it was fine. What else can it be
Asked by WehrweinAnswer
Replied on February 5, 2013
Do you have a carb on the vehicle or is it fuel injected? If fuel injected, check the idle air control valve. If it has a carb, you can adjust curb idle speed on the carb itself.
