1998 GMC Jimmy Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 GMC Jimmy
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1998 GMC Jimmy ProblemsCheck Engine Light With Code P1870
Vehicles equipped whit a 4 speed automatic transmission may develop a harsh 1-2 shift and/or illumination of the Check Engine Light with code P1870 stored. This can be caused by wear of the bore for the TCC isolator and regulator valves in the valve body. This condition does not commonly occur until the transmission reaches normal operating temperature. If the valve body is worn, replacement will be necessary to correct this concern.
1998 GMC Jimmy QuestionsWhile running the heater this morning for about 10 min I noticed while I was stopped at a red light I was losing battery power fast, Shut the heat off and the battery gauge return to normal? Whats Wrong (1 answer)
My 98 engine overheated and I tried to save it. I have a 2000 jimmy 4x4 engine that looks almost the same but will it fit in my 98?
My car was knocking so i found a rocker arm loose on cylinder 6. The nut was tight to spec 18ft.lb, i tried tightening to 20ft.lb and did not change anything. I put a washer between rocker ball and rocker nut and tighten to 18ft.lb and it worked, i could still move rocker arm from side to side ...