Two problems related to noises during shifting have been reported for the 1998 GMC Jimmy. The most recently reported issues are listed below.
Ignition switch failed three times, causing vehicle to automatically shut off. Consumer states that engine soon light illuminates, driver?s window motor failed and window will not go up or down, all dash lights and gauges will stop working, muffler has hole in it and makes loud noise, muffler and pipe exhaust system replaced, and when crank sometimes backfires and shifts hard, servo making bang shift, installed servo and 2 synolids.
Transmission makes loud roaring noise usually when starting from a stop (5-10 mph) and won't shift into next gear - have to decelerate and try again and sometimes takes 3-5 attempts before will shift - had to pull to side of road on several occasions during rush hour. Almost in accident on one occasion due to this problem. Occasionally transmission has roared when traveling 50 mph and had to decelerate. No transmission light warning me of problem illuminates. Had serviced twice and still same problem and dealership fixed oil leak on first service (vehicle had to be towed to dealership) and replaced part 2nd service and still is a problem, last occuring on 7/15/99, following 2nd service. I am going to request a 3rd service. Dealership has not had a transmission service/repair man on staff the last 3 attempts to get repair. Both services have been completed by adams Chevrolet/GMC in raytown, mo because dave cross has not had a transmission man. However, for the 2nd service (July 1999), dave cross accepted the Jimmy for service but had adams do the service. Dave cross service mgr (I believe is mgr) told me when I picked up Jimmy following 2nd repair that there had been a recent "bulletin" that required a piece be replaced which they did and supposedly fixed the problem. However, the problem still exists, so I will have to take the Jimmy in again. Also, I requested to see the bulletin and the mgr refused. He said it was not for customer use.