This factory service and repair manual for the 1993 GMC P6500 is built around a single trim, the P6S042, and three engine options that ask very different things of a technician. Two are gasoline overhead-valve V8s, one of 6.0 liters and 366 cubic inches and one of 7.0 liters and 427 cubic inches; the third is a turbocharged 6.6L overhead-valve inline-six diesel of 403 cubic inches. The manual carries procedures, specifications, torque values, wiring diagrams and diagnostics for each of them and for the chassis they sit in.
Engines covered
- 6.0L V8 (366 cu in) — OHV, naturally aspirated, gasoline
- 7.0L V8 (427 cu in) — OHV, naturally aspirated, gasoline
- 6.6L inline-six (403 cu in) — OHV, turbocharged, diesel
Trims covered
- P6S042
Known issues on the 1993 P6500. No recalls sit on the federal record for the 1993 P6500 and no owner complaints have been logged with NHTSA. That is common for chassis sold to commercial buyers, and it shifts the manual's role toward reference work: engine rebuild specifications for both gasoline V8s and the turbocharged diesel, transmission and axle procedures, brake system dimensions and adjustment steps, and wiring diagrams and diagnostics for the cab and chassis circuits.
