Three problems related to ignition have been reported for the 1996 GMC Jimmy. The most recently reported issues are listed below.
Stopped at local restaurant, ignition would not turn off and we were unable to remove the key. At this time, the vehicle is not driveable at all. We are unable to start or shut off the vehicle. The vehicle is not recognizing that the key is in the ignition. All dash lights are on, brakes do not work. This is a safey concern.
The abs system has malfunctioned many times. At first I did not pay attention to it, because I thought it was just light brake pressure. Then it started to loose pressure and keep going forward when stopping. I took it to the dealer and paid for a new master cylinder. Then it started malfunctioning again. I contacted the bbb and was told it wasn't covered under warranty and I had too much milage. Went back to dealer and they reprogrammed the computer unit, no charge. The ignition started locking and they repaired that for a fee. It too has gone back to locking when trying to start. Safety is a concern, still.
Spark plug failed.