1991 GMC Jimmy Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC Jimmy
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1991 GMC Jimmy ProblemsFuel Level Sensor Failure
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
For the 4L80-E Transmission only (Diesel engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the transmission to shift erratically. Our technicians tell us there are updated shift solenoids, an internal transmission harness, and a connector pigtail available to correct this fault.
1991 GMC Jimmy QuestionsRear window defrost does not heat, what do I look for to fix? (1 answer)
The light comes on when flipping the switch but the window does not heat up. Not sure where to start looking for the issue. Does this work through a fuse?
also need to get idle speed solenoid, where?
when you push the gas to take off it skips n if you dont let off the gas it will cut off we have had the coil replaced but it did not fix the prob.