1985 GMC C3500 Service and Repair Manual
This factory service and repair manual for the 1985 GMC C3500 puts four engines and four body configurations between the same set of covers. Gasoline buyers had the 4.8L inline-six or the 5.7L and 7.4L V8s; the alternative was the 6.2L diesel V8. The body could be a crew cab pickup, a standard cab pickup or a cab and chassis with two or four doors, in Base, High Sierra or Sierra Classic trim. Everything is arranged by system, with specifications, torque values, wiring diagrams and diagnostics for each.
Engines covered
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 4.8L inline-six (292 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 4-door crew cab pickup
- 2-door standard cab pickup
- 4-door cab & chassis
- 2-door cab & chassis
Trims covered
- Base
- High Sierra
- Sierra Classic
Known issues on the 1985 C3500. NHTSA has no recalls and no owner complaints on record for this model year, which makes it clean. Coverage is what matters instead, and on a truck like this it is the working parts that see the manual most: transmission and axle service, brake overhaul, steering and suspension repair, frame and body procedures. Engine sections handle the inline-six, both gasoline V8s and the diesel individually, and every section carries its own specifications, torque values, wiring diagrams and diagnostic steps.
CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. TH
THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.
HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 20
