Three problems related to power train have been reported for the 1996 GMC Jimmy. The most recently reported issues are listed below.
Speedometer sticks when driving with lights on for 15 minutes or more. Dash gets very hot unless dash lights are turned to lowest setting. When dash lights are turned to the lowest setting, the speedometer begins to work normally.
While driving for a half an hour or more the speedometer malfunctiones, causing erratic readings. The occupant can't tell how fast vehicle is going. Dealer cannot determine problem. Please provide further details.
Rpm sensor failed.