1991 GMC G1500 Service and Repair Manual

This factory service and repair manual for the 1991 GMC G1500 sets out the specifications and procedures for a van offered with a 4.3L V6 or a 5.0L or 5.7L V8, each naturally aspirated and overhead valve, in Vandura, Rally and Rally STX guise. Four bodies are covered, cargo and passenger vans in standard and extended lengths. The engine chapters hold clearances and torque sequences per engine, and the chassis, driveline, brake and circuit chapters hold the diagrams and diagnostic routines the rest of the van needs.

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 1991 G1500. Nothing appears against the 1991 G1500 on the federal record, neither recalls nor owner complaints. That leaves the manual to be judged on coverage, which extends from engine and transmission overhaul through propeller shaft and rear axle service, front suspension and steering repair with alignment specifications, hydraulic and parking brake work, fuel and ignition diagnosis, heating and ventilation, and body circuit troubleshooting with wiring diagrams drawn for each body configuration.