1986 Chevrolet K20 Suburban Service and Repair Manual

This factory service and repair manual for the 1986 Chevrolet K20 Suburban covers three engines, two of them gasoline V8s of 305 and 350 cubic inches and the third a 379 cubic inch diesel V8, all naturally aspirated and all overhead-valve. The body is the four-door sport utility, and Custom, Scottsdale and Silverado are the trims. With the body fixed, most of the book applies to every vehicle it covers, and only the engine chapters have to be read selectively.

Engines covered

• 5.0L V8 (305 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
• Scottsdale
• Silverado

Known issues on the 1986 K20 Suburban. Procedures, specifications and torque values are set out for the two gasoline V8s and the diesel; wiring diagrams follow the four-door body through its lighting, charging and accessory circuits; and the chassis chapters give diagnostic sequences for the brakes, steering, suspension and driveline. It is the same information the dealer service department worked from when the vehicle was new.