The distributor may develop internal faults. This can cause a rough running engine or stalling condition, the Check Engine Light may or may not illuminate. Our technicians tell us that the distributor should be overhauled or replaced to correct this concern.Google+
Car Problem Reports
GMC Jimmy Internal Faults in Distributor Can Cause Engine Problems
GMC Jimmy Problem
Visitor, 1995 GMC Jimmy, 229,000 mi
My distributor jumped but did not brake any parts of the distributor. The only thing I could see bad on the dist. was the gear had a lot of wear. I had thought the timing chain had jumped but this was not the case but I did install a new timing set, cover and new aftermarket distributor.