1983 Chevrolet C20 Service and Repair Manual

This factory service and repair manual for the 1983 Chevrolet C20 is a heavy-duty book: four body configurations, six engines and three trims. The bodies range from a two-door standard cab pickup to a four-door crew cab and the cab-and-chassis versions meant to be bodied later. The engines run from the 4.1L inline-six of 250 cubic inches to the 7.4L V8 of 454, with the 4.8L six, the 5.0L and 5.7L V8s and the 6.2L diesel V8 in between. Custom, Scottsdale and Silverado set the equipment level.

Engines covered

• 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
• 4.1L inline-six (250 cu in) — OHV, naturally aspirated, gasoline
• 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
• 6.2L V8 (379 cu in) — OHV, naturally aspirated, diesel
• 4.8L inline-six (292 cu in) — OHV, naturally aspirated, gasoline
• 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door standard cab pickup
• 4-door crew cab pickup
• 2-door cab & chassis
• 4-door cab & chassis

Trims covered

• Custom
• Scottsdale
• Silverado

Known issues on the 1983 C20. One recall is on the federal record for this year, and it concerns replacement equipment rather than the truck itself: an oil filter that can seal poorly, allowing engine oil to escape with fire the consequence named. One owner complaint, on seat belts, is the only other entry. For a truck configured this many ways the manual's value is its reach — lubrication and oil pressure specifications, belt anchorage torque, and the frame, driveline and brake procedures a cab and chassis or crew cab needs as much as a pickup does.