2004 GMC C5500 Topkick Service and Repair Manual

This factory service and repair manual for the 2004 GMC C5500 Topkick pairs two very different engines with four chassis configurations. The diesel is a turbocharged 6.6L overhead-valve V8 of 403 cubic inches; the gasoline alternative is a naturally aspirated 8.1L overhead-valve V8 of 496 cubic inches. Those went into a crew cab and chassis, a motorhome cutaway, a cab and chassis cutaway and a 2-door conventional cab and chassis, listed under four trim codes. The book separates its procedures, specifications, torque values, wiring diagrams and diagnostics by system so the right set is easy to isolate.

Engines covered

• 6.6L V8 (403 cu in) — OHV, turbocharged, diesel
• 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• Cab & chassis, crew cab
• Motorhome, cutaway
• Cab & chassis, cutaway
• 2-door cab & chassis, conventional

Trims covered

• C5C042
• C5E042
• C5U042
• C5V042

Known issues on the 2004 C5500 Topkick. Both engines are covered in full — the turbocharged 6.6L diesel and the 8.1L gasoline V8 — along with the chassis and cab systems shared by the crew cab, the two cutaways and the conventional cab and chassis, with torque values, wiring diagrams and diagnostics for each.