Four problems related to engine belts and pulleys have been reported for the 1998 GMC Jimmy. The most recently reported issues are listed below.
Power windows lock up/ switch is also defective and unable to operate windows. Vehicle being repaired at an independent repair shop. The mirror switch was burnt out and the multifunction switch had a short, the serpentine belt was cracking , head lights went out while driving to work, and the oil cooling line was leaking badly.
Unable to operate headlights and turn signals due to a defective multi-function switch. The windows only go down from the driver's door control because the window lock was shorted out. The mirror switch was burnt out. The serpentine belt was cracking. The oil cooling lines were leaking badly.
The serpentine belt tensioner is an item requiring no maintenance. When it fails the vehicle is completely disabled. The transmissin cooling line failed where it connects to the transmission. This connection point is directly above the exhaust system so when it fails transmission oil is spewed all over the hot exhaust pipes/catalytic converter.
Truck would not run at full power due to the ignition switch lights would also fail on the dash . Key would also get stuck in the ignition do to a problem with the ignition . The exhaust problem was the baffels were busted inside the muffler . Windshield had a void between the upper frame and the windshield causing it to leak. Belt tensioner broke during a start up . Air conditioner compressor went out during my travel home from work. Ak.