2008 GMC C7500 Topkick Service and Repair Manual
This factory service and repair manual for the 2008 GMC C7500 Topkick works through three engines and two bodies. The engines are a turbocharged 7.2L inline-six diesel, a naturally aspirated 8.1L OHV gasoline V8 and a turbocharged 7.8L inline-six diesel. The bodies are a four-door crew cab straight truck and a medium conventional straight truck, built under C7C042, C7E042 and C7V042. Because the two diesels are close in displacement but not interchangeable in specification, the manual keeps their sections firmly apart.
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
Trims covered
- C7C042
- C7E042
- C7V042
Known issues on the 2008 C7500 Topkick. Nothing has been recorded federally against this year, so there is no recall or complaint history to caution a buyer about. The manual's job is the ordinary one, and it does it across three engines and two bodies: specifications and torque values for the turbocharged 7.2L and 7.8L diesels and the 8.1L gasoline V8, with wiring diagrams and diagnostics for the C7C042, C7E042 and C7V042 chassis they were built on.
