This factory service and repair manual for the 2009 GMC C7500 Topkick addresses a chassis built three ways: as a cutaway, as a four-door crew cab straight truck and as a medium conventional straight truck. The designations were C7C042, C7E042 and C7V042. Three engines were available, the turbocharged 7.2L inline-six diesel, the naturally aspirated 8.1L OHV gasoline V8 and the turbocharged 7.8L inline-six diesel, and the manual provides specifications, torque values and diagnostics for each of them individually.
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
- Cutaway
- 4-door straight truck, crew cab
- Straight truck, medium conventional
Trims covered
- C7C042
- C7E042
- C7V042
Known issues on the 2009 C7500 Topkick. NHTSA records no recalls against this model year and no owner complaints from the people who ran it, which is a clean result on both counts. That leaves the reference material to speak for itself. Procedures, specifications, torque values, wiring diagrams and diagnostics are provided for the two turbocharged inline-six diesels and the 8.1L gasoline V8, and they apply equally to the cutaway, the crew cab and the medium conventional straight truck.
