1991 Chevrolet R3500 Service and Repair Manual
This factory service and repair manual for the 1991 Chevrolet R3500 narrows to two trims, Cheyenne and Silverado, and two four-door bodies, a cab and chassis and a crew cab pickup. Three engines are covered: the 7.4L gasoline V8 of 454 cubic inches, the 5.7L gasoline V8 of 350, and the 6.2L diesel V8 of 379, each an overhead-valve design without forced induction. The specifications, torque values, wiring diagrams and diagnostics are organized by system, so engine work and chassis work stay separate.
Engines covered
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 4-door cab & chassis
- 4-door crew cab pickup
Trims covered
- Cheyenne
- Silverado
Known issues on the 1991 R3500. One recall appears on the federal record for these trucks, and it concerns replacement oil filters rather than factory hardware: the affected filters may not seal adequately, which can let the engine lose its oil and, in the worst case, start a fire. Owner complaints number two, both about the service brakes. That is a small sample, but brakes on a truck this heavy are worth attention, and the manual gives hydraulic, adjustment and diagnostic procedures for them alongside the lubrication specifications the recall makes relevant.
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 VEHI
THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN
HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING N
FRONT BRAKES LOCK UP ON SLICK ROADS.
BRAKES SKID IN WET OR SNOW.
