GMC Topkick C6500, Topkick C8500 +1 more: Engine

Affects GMC Topkick C6500, Topkick C8500, Topkick C7500 · 1990 — about 1K vehicles.

The hazard

NOTE: VEHICLES EQUIPPED WITH CATERPILLAR 3116 ENGINES. THE GOVERNOR MAY FAIL TO CONTROL ENGINE SPEED BECAUSE OF AN IMPROPERLY TIGHTENED GOVERNOR RISER LEVER BOLT, OR AN IMPROPERLY INSTALLED GOVERNOR CONTROL LEVER SPRING. WITHOUT GOVERNOR OPERATION, A DRIVER COULD OVERSPEED THE ENGINE WHILE ON THE HIGHWAY. CORRECTION: ENGINES WILL BE INSPECTED TO ENSURE PROPER ASSEMBLY AND TORQUE ON GOVERNOR RISER BOLT AND PROPER INSTALLATION OF GOVERNOR CONTROL LEVER SPRING.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational