This factory service and repair manual for the 2002 GMC T6500 covers two engines and one chassis designation. The engines are turbocharged inline-six diesels, a 7.2L of 441 cubic inches with overhead valves and a 7.8L of 475 cubic inches, and the designation is F6B042. Each engine's specifications, torque values and diagnostic checks are documented separately, while the systems they share, from the driveline and brakes through steering, chassis and body wiring, are set out in the usual system order for a medium-duty truck.
Engines covered
- 7.2L inline-six (441 cu in) — OHV, turbocharged, diesel
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Trims covered
- F6B042
Known issues on the 2002 T6500. No recalls and no owner complaints are logged with NHTSA for this model year, so the federal record is clean. The manual's usefulness is therefore in the detail it carries every day: overhaul and adjustment procedures for the 7.2L and 7.8L turbocharged diesels, the torque values that hold them together, the brake and steering specifications a chassis of this weight is held to, and the wiring diagrams and diagnostic routines needed to trace an unfamiliar fault to its source.
