2004 Chevrolet C8500 Service and Repair Manual

This factory service and repair manual for the 2004 Chevrolet C8500 covers two bodies, a medium conventional straight truck and a four-door crew cab straight truck, in three listed configurations: C8C042, C8C064 and C8E042. Three engines are documented across them — turbocharged diesel inline-sixes of 7.2 and 7.8 liters, 441 and 475 cubic inches, and a naturally aspirated 8.1L gasoline V8 of 496 with overhead valves. The crew cab brings its own body and interior procedures, while the frame and driveline material serves both trucks equally.

Engines covered

• 7.2L inline-six (441 cu in) — turbocharged, diesel
• 7.8L inline-six (475 cu in) — turbocharged, diesel
• 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• Straight truck, medium conventional
• 4-door straight truck, crew cab

Trims covered

• C8C042
• C8C064
• C8E042

Known issues on the 2004 C8500. The coverage is thorough. All three engines are documented with overhaul and adjustment procedures, specifications and torque values, and with diagnostics for their fuel and control systems. The chassis half of the book covers frame, driveline, brake, steering and suspension work, and the wiring diagrams take in both the conventional cab and the crew cab, so a circuit can be followed end to end on either truck.