1988 Chevrolet C70 Service and Repair Manual

This factory service and repair manual for the 1988 Chevrolet C70 covers the truck in tractor form as well as in straight-truck and cab-and-chassis form, all under codes C7D042 and C7D064. Five engines were listed: naturally aspirated gasoline V8s of 366 and 427 cubic inches, the 8.2L diesel V8 in both turbocharged and naturally aspirated form, and a turbocharged 10.4L diesel V8 of 636 cubic inches. The engine sections carry separate specifications and torque values for each.

Engines covered

• 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
• 7.0L V8 (427 cu in) — naturally aspirated, gasoline
• 8.2L V8 (501 cu in) — turbocharged, diesel
• 10.4L V8 (636 cu in) — turbocharged, diesel
• 8.2L V8 (501 cu in) — naturally aspirated, diesel

Body styles covered

• Tractor truck, medium conventional
• Straight truck, medium conventional
• 2-door cab & chassis, conventional

Trims covered

• C7D042
• C7D064

Known issues on the 1988 C70. Coverage in the manual runs to the systems that actually wear on a truck used as a tractor or a straight truck: the driveline from the transmission back through the axles, the braking system, the steering, the frame and its mountings, and the cab and chassis wiring, all with specifications, torque values and diagnostic procedures, and with separate engine sections for the gasoline V8s and the three diesels.