Three problems related to wiring have been reported for the 1998 GMC Jimmy. The most recently reported issues are listed below.
The engine continually misfires. There is a TSB bulletin #00-06-04-003b. Deposit buildup on popped valve ball &/or seat, causing it to stick. There is a recall because of this but only in California. I live in alaska. I got an estimate of $1200 bucks to fix this problem. Because of this, I only get 5-7 mpg, and have little power. Also, my abs light turns on and the abs activates at low speeds on dry ground. My electrical system is totally messed up. My right clicker just the sound not light) goes off when driving. It is completely erratic and unpredictable. My speakers turn off and on sporadically. My driver side seat adjuster broke off with little pressure. My steering wheel continuously pulls to the right. This many problems in a vehicle is ridiculous. What a lemon. Especially since I have seen the same exact complaints all over this sight about this specific vehicle.
Everytime I start my vehicle, all the panel lights comes on. I took it to the dealer and they stated the vehicle has a bad wiring problem. The vehicle have trouble cranking most times and the compressor has died for no apparent reason. This problem needs to be addressed before someone ends up in a fatal accident.
Failure was intermittent. Gauges would fail,and all dash gauge lamps would light up. Stopped at dealer and asked if they knew of the problem. I was told its a known problem but if it wasn't fixed at any time it could go,and I would be stuck. Would not be able to shift the transmission, it would fail to start and all the gauges would fail. The problem is with a bad ground in the electrical asm behind the keylock and it would cost around $500 to fix. I think this should be a call back. I was told the part was hard to come by because they had to purge inventory of the old part. If the new upgraded part is so hard to get I would suspect that the problem is larger than is being let on. At this point I have a rental, waiting for the car to be fixed. This is similar to the Ford recall with the ignition switches that caused fires only they say this problem won't cause a fire. But what happens if it goes while driving at highway speeds,or any speed at that matter?.