1989 GMC C6000 Service and Repair Manual
This factory service and repair manual for the 1989 GMC C6000 was written for a chassis available with gasoline or diesel power and built either as a 2-door conventional cab and chassis or as a medium conventional tractor. The gasoline engines are the naturally aspirated 6.0L overhead-valve V8 of 366 cubic inches and the naturally aspirated 5.7L V8 of 350 cubic inches; the diesel is the naturally aspirated 8.2L V8 of 501 cubic inches. One trim code, C6D042, covers the range, and the book carries procedures, specifications, torque values, wiring diagrams and diagnostics for all of it.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — naturally aspirated, gasoline
- 8.2L V8 (501 cu in) — naturally aspirated, diesel
Body styles covered
- 2-door cab & chassis, conventional
- Tractor truck, medium conventional
Trims covered
- C6D042
Known issues on the 1989 C6000. The 1989 C6000 has no recalls on the federal record and no owner complaints logged with NHTSA. That makes this a maintenance book first. Its engine coverage handles the difference between the gasoline V8s and the 8.2L diesel, each with its own specifications and service procedures; its chassis coverage applies to both the tractor and the cab-and-chassis build; and torque values, wiring diagrams and diagnostics run through the systems those two configurations share.
