1991 GMC Sonoma Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC Sonoma
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1991 GMC Sonoma ProblemsPower Window Motors May Fail From Overheating
A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor will commonly correct this concern.
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
1991 GMC Sonoma QuestionsMy 1991 gmc sonoma 4.3 liter is loosing too much water (1 answer)
and I don't know why i just had my heads and my throttle body redone it was blowing clouds of white smoke every time I turned it on or let it sit while running now it does it only when it's cold or low on water.... need some ones opinion !
I just bought the truck. I started it just about 2 weeks before I bought it, it ran fine. I go to start it after I bought it and the ignition is stuck in the locked position. I can't move any of the pieces. Not even the unlock switch.