1990 GMC G1500 Service and Repair Manual
This factory service and repair manual for the 1990 GMC G1500 works across four body configurations and three engines. The bodies are the standard and extended cargo vans and the standard and extended passenger vans, sold as Vandura, Rally and Rally STX. The engines are the naturally aspirated overhead valve 4.3L V6, 5.0L V8 and 5.7L V8. Because a passenger van and a cargo van diverge sharply in trim, seating and wiring, the manual documents those differences rather than treating the two as one vehicle.
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 1990 G1500. The federal record is empty for this model year: no recalls and no owner complaints against the 1990 G1500. That makes the manual a repair reference rather than a history of trouble. It carries overhaul procedures and specifications for the V6 and both V8s, transmission and rear axle work, steering and front suspension service with alignment figures, hydraulic brake rebuilding, and heating and ventilation repair, and it backs the whole of the body circuit coverage with wiring diagrams and structured test procedures rather than generic advice.
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
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURE
THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I
HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
