1988 Chevrolet R20 Suburban Service and Repair Manual

This factory service and repair manual for the 1988 Chevrolet R20 Suburban is a two-trim, one-body affair — Scottsdale or Silverado, four-door sport utility — with three engines behind it. Two are gasoline V8s, 7.4L and 5.7L, of 454 and 350 cubic inches; the third is the 6.2L 379-cubic-inch diesel. All are pushrod engines without forced induction, so the mechanical procedures share a family resemblance even where the specifications differ, and the chassis and body work applies to all of them equally.

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 1988 R20 Suburban. The manual's coverage here means three separate sets of engine specifications and diagnostics, transmission and axle overhaul procedures, brake and steering service, suspension alignment data and wiring diagrams for the whole vehicle. For a wagon carrying this much weight, the brake and driveline sections are the ones most likely to see use.