1998 GMC K3500 Service and Repair Manual
This factory service and repair manual for the 1998 GMC K3500 keeps to three engines: a turbocharged 6.5L diesel V8, a 7.4L gasoline V8 and a 5.7L gasoline V8. Five body configurations are covered, from the standard cab pickup and extended cab pickup to the crew cab and both cab & chassis layouts, and the trims are Sierra SL, Sierra SLE and Sierra SLT. Fueling is where the three engines diverge most, and their procedures and specifications are kept separate accordingly.
Engines covered
- 6.5L V8 (395 cu in) — OHV, turbocharged, diesel
- 7.4L V8 (454 cu in) — OHV, naturally aspirated, gasoline
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
Body styles covered
- 2-door standard cab pickup
- 2-door cab & chassis
- 4-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 1998 K3500. One owner complaint is logged with NHTSA for the 1998 K3500, and it concerns the fuel system. That happens to be the part of this truck where the three engines differ most, the turbocharged diesel having its own injection and delivery arrangements while the 7.4L and 5.7L gasoline V8s follow another scheme entirely. The manual carries fuel system procedures, specifications, torque values and diagnostics for each of them, backed by wiring diagrams for the sensors and pumps involved.
