The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.
Resources for the Repair and Maintenance of your 1990 GMC Jimmy
1990 GMC Jimmy
1990 GMC Jimmy Problems
The power door lock actuators may become slow to operate or stop working completely and require replacement.
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. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.
The throttle body gasket may develop a vacuum leak which may result in a higher than normal engine idle. Failed gaskets will require replacement.
1990 GMC Jimmy Questions and Answers
my 1988 gmc jimmy backfires through the throttle body and looses pressure when driving , and cuts off. can anyone help me?
how do i access the key cylinder on the rear power window? the power window works from the interior switch but not from the outside key. i cant access it in order to check the connection.
thanks for the responce oakman...i went thru the panel originally, but with the window up, the motor mechanism is in the way of the two screws on the cylinder. the does tailgate come apart somehow...
The tailgate window only goes down part way on one side and seems to bind up. I took off the cover & found some rusted metal pieces/arms? in there. what are they called so I can order the corre...
1990 GMC Jimmy Reviews
Have 220 k miles and it still runs like a champ. Have had the Jimmy for the past 50 k miles. No issues whatsoever.
As a whole, the Jimmy V1500 is a great truck. The interior trim, weatherstrips & electrical components are it's weakest features. The 5.7L is a solid, long lasting engine and the TBI fuel system keeps it simple and dependable. This generation truck is not quiet on the road like the new ones, lots of wind noise, it's a truck and it rides like one. Good off-road truck for exploring and camping in remote places. Mine is 20 years old now with over 260,000 miles using only synthetic oil (5w-30) getting ready to overhaul the whole truck. It's paid for.