1988 GMC C7000 Service and Repair Manual

This factory service and repair manual for the 1988 GMC C7000 lists five engines: the naturally aspirated 6.0L OHV and 7.0L gasoline V8s, the 8.2L diesel V8 in both turbocharged and naturally aspirated form, and the turbocharged 10.4L diesel V8. Two designations were offered, C7D042 and C7D064, bodied as a medium conventional tractor, a medium conventional straight truck or a conventional cab and chassis. Coverage is organized by system, so a fleet running more than one of those engines can work from a single book.

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 C7000. This manual earns its place through its reference material: torque values and specifications for the five engines above, and procedures, wiring diagrams and diagnostics that carry across the tractor, straight truck and cab-and-chassis versions of the same chassis.