2001 GMC C3500HD Service and Repair Manual

This factory service and repair manual for the 2001 GMC C3500HD pairs two large engines with one Base-trim chassis: the turbocharged 6.5L diesel V8 and the naturally aspirated 8.1L gasoline V8, the latter a 496-cubic-inch unit. Bodies are the two-door conventional cab and chassis and the four-door crew cab version. Service specifications, torque values and diagnostic procedures are written separately for each engine, and the driveline, brake, steering, suspension and electrical coverage applies to both, with wiring diagrams throughout.

Engines covered

• 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
• 8.1L V8 (496 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 2-door cab & chassis, conventional
• 4-door cab & chassis, crew cab

Trims covered

• Base

Known issues on the 2001 C3500HD. On a chassis built to be completed by an outside body company, the manual documents a good deal: engine repair for both the 6.5L diesel and the 8.1L gasoline V8, transmission and axle service, brake, steering and suspension procedures, frame and cab work, and the electrical system, each with its own specifications, torque values, wiring diagrams and diagnostics.