1987 Chevrolet R20 Suburban Service and Repair Manual
This factory service and repair manual for the 1987 Chevrolet R20 Suburban puts three big overhead-valve V8s under one four-door sport utility body: the 7.4L of 454 cubic inches and the 5.7L of 350, both gasoline, and the 6.2L 379-cubic-inch diesel. None is turbocharged, and three trim levels sit above them: Custom Deluxe, Scottsdale, Silverado. The engine sections divide accordingly, while the driveline, brake, steering and body procedures behind them are common to every version of the wagon.
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 sport utility
Trims covered
- Custom Deluxe
- Scottsdale
- Silverado
Known issues on the 1987 R20 Suburban. A single recall appears on the federal record, and it belongs to a replacement part rather than the vehicle: certain aftermarket oil filters sold for this application may not seal as they should, allowing the engine to lose oil and, in the worst case, catch fire. One owner complaint, about tires, is all else that has been logged. Practically, that means routine mechanical care is the whole story here, and the manual gives it — lubrication and engine specifications for all three V8s, plus brake, steering, suspension and electrical procedures.
