1999 GMC C2500 Service and Repair Manual
This factory service and repair manual for the 1999 GMC C2500 covers four bodies: the standard cab pickup, the cab and chassis, the crew cab pickup and the extended cab pickup. Engines number four as well, the 5.0L V8, the turbocharged 6.5L diesel V8, the 7.4L V8 and the 5.7L V8 arranged for compressed natural gas or gasoline, and the trims are Sierra SL, Sierra SLE and Sierra SLT. Crew cab bodies bring extra door, glass and interior hardware, and those procedures are set out apart from the shorter cabs.
Engines covered
- 5.0L V8 (305 cu in) — OHV, naturally aspirated, gasoline
- 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, CNG or gasoline
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door standard cab pickup
- 2-door cab & chassis
- 4-door crew cab pickup
- 2-door extended cab pickup
Trims covered
- Sierra SL
- Sierra SLE
- Sierra SLT
Known issues on the 1999 C2500. A single owner complaint stands on the federal record for this model year, concerning the service brakes. Brakes on a truck this size deserve checking regardless, and the manual gives pad and shoe inspection limits, rotor and drum specifications, hydraulic bleeding procedures and the torque values for the hardware involved. Beyond that it covers all four engines, the transmission and axles, steering and suspension, body and interior work, and the wiring diagrams and diagnostic steps for the electrical system.
