1985 GMC C6000 Service and Repair Manual
This factory service and repair manual for the 1985 GMC C6000 covers six engines in one volume. Four are naturally aspirated gasoline units: the 6.0L and 7.0L overhead-valve V8s of 366 and 427 cubic inches, the 5.7L V8 of 350 cubic inches and the 4.8L overhead-valve inline-six of 292 cubic inches. Two are diesels, the naturally aspirated 8.2L V8 of 501 cubic inches and the turbocharged 14.0L inline-six of 855 cubic inches. Both the conventional cab and chassis and the medium conventional tractor truck are covered, under the single C6D042 trim code.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 7.0L V8 (427 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — naturally aspirated, gasoline
- 14.0L inline-six (855 cu in) — turbocharged, diesel
- 4.8L inline-six (292 cu in) — OHV, 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 1985 C6000. NHTSA has nothing on the 1985 C6000 — no recall campaigns and no owner complaints for the model year. Given the size of the engine list, the manual's real work is keeping six sets of figures apart. Everything from the 292-cubic-inch gasoline six to the turbocharged 855-cubic-inch diesel inline-six has its own specifications, service procedures and torque values, and the tractor and cab-and-chassis versions share chassis coverage complete with wiring diagrams and diagnostics.
