2006 GMC C7500 Topkick Service and Repair Manual
This factory service and repair manual for the 2006 GMC C7500 Topkick brings together three engines and three body configurations. The engines are a turbocharged 7.2L inline-six diesel, a turbocharged 7.8L inline-six diesel and a naturally aspirated 8.1L OHV gasoline V8. The bodies are a four-door crew cab straight truck, a medium conventional straight truck and a cutaway straight truck. Four designations, C7C042, C7E042, C7H042 and C7V042, span those combinations, and the figures in the book are given per engine.
Engines covered
- 7.2L inline-six (441 cu in) — turbocharged, diesel
- 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Body styles covered
- 4-door straight truck, crew cab
- Straight truck, medium conventional
- Straight truck, cutaway
Trims covered
- C7C042
- C7E042
- C7H042
- C7V042
Known issues on the 2006 C7500 Topkick. A clean sheet on both counts here: no recalls on the federal record for this year and no owner complaints. The manual is left to earn its place on coverage alone, which it does across three bodies and three engines. Specifications and torque values are given separately for the turbocharged 7.2L and 7.8L inline-six diesels and the naturally aspirated 8.1L gasoline V8, and the wiring diagrams and diagnostics take in the crew cab, conventional and cutaway configurations.
