1985 GMC G1500 Service and Repair Manual
This factory service and repair manual for the 1985 GMC G1500 covers a year in which a 4.3L OHV V6 stands in the lineup alongside the 5.0L and 5.7L V8s, three naturally aspirated gasoline engines with three different sets of clearances, torque sequences and tune-up figures. The van itself appears in four forms, standard and extended cargo and standard and extended passenger, under the Rally, Rally STX and Vandura names. Chassis, brake, driveline and body circuit coverage applies across all of them, with full specifications and diagrams.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 3-door standard cargo van
- 3-door extended passenger van
- 3-door standard passenger van
- 3-door extended cargo van
Trims covered
- Rally
- Rally STX
- Vandura
Known issues on the 1985 G1500. There are no recalls on the federal record for the 1985 G1500 and no owner complaints logged with NHTSA. The manual is a maintenance and overhaul reference first: engine rebuilding for the V6 and both V8s, fuel and ignition diagnosis, cooling system service, automatic and manual transmission repair, rear axle and propeller shaft work, front suspension and steering with alignment specifications, brake overhaul, and body circuit diagnosis supported by wiring diagrams for each configuration.
