1991 Chevrolet R1500 Suburban Service and Repair Manual
This factory service and repair manual for the 1991 Chevrolet R1500 Suburban has one body, two trims and two engines to keep straight, and the engines are the interesting part: a naturally aspirated 6.2L diesel V8 of 379 cubic inches on one side, a naturally aspirated 5.7L gasoline V8 of 350 cubic inches on the other, both overhead-valve. The body is a four-door sport utility, the trims Scottsdale and Silverado. Specifications, torque values, wiring diagrams and diagnostics follow the vehicle system by system from there.
Engines covered
- 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 sport utility
Trims covered
- Scottsdale
- Silverado
Known issues on the 1991 R1500 Suburban. Nothing is recorded against this year federally — no recalls, no owner complaints. Judge it, then, on what the manual has to cover, which for a wagon of this size and weight is a lot: two engines with different fuel systems, a driveline that has to move a heavy body, brakes and steering that wear accordingly, and a full electrical system. Procedures, specifications, torque values, wiring diagrams and diagnostics are given for all of it.
