1991 GMC 2500 Pickup Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC 2500 Pickup
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1991 GMC 2500 Pickup ProblemsPower Brake Units May Leak Fluid From Hydro-Boost Unit
Power brake systems using "hydro-boost" may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. Replacement of the hydro-boost unit is the common repair to correct this concern.
The power door lock actuators may become slow to operate or stop working completely and require replacement.
1991 GMC 2500 Pickup QuestionsWhen towing a trailer with a car do I put it in 3rd gear or in overdrive? (1 answer)
I think the question is pretty self expanitory...thank you
I have checked the fuses inside relays and maxi fuse outside and they are all good. I get no power to the switch but I can jumper to the motor and it does spin.