1989 Chevrolet R2500 Suburban Service and Repair Manual
This factory service and repair manual for the 1989 Chevrolet R2500 Suburban documents a heavy four-door sport utility and the three V8s available under its hood: the 454-cubic-inch 7.4L and the 350-cubic-inch 5.7L on gasoline, and the 379-cubic-inch 6.2L on diesel. All three are overhead-valve and naturally aspirated, and both trims, Scottsdale and Silverado, share the same chassis beneath them. Engine work therefore branches by displacement and fuel, while everything from the transmission back is written once.
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
- Scottsdale
- Silverado
Known issues on the 1989 R2500 Suburban. The federal record for this year is clean — no recalls, no owner complaints logged with NHTSA. That leaves the service schedule as the only thing worth watching, and the manual sets out what it involves for each engine: valve and timing specifications, cooling and lubrication requirements, and diagnostic procedures written separately for the gasoline V8s and the diesel. Around them sit transmission and axle overhaul, brake and steering service, suspension data and wiring diagrams, all with their own torque values.
