2002 GMC W4500 Forward Service and Repair Manual
This factory service and repair manual for the 2002 GMC W4500 Forward covers two body configurations rather than one — a low crew cab straight truck alongside the low-tilt straight truck — with a single W4S042 build code behind both. Engine choice is the other variable: a naturally aspirated 5.7L overhead-valve V8 of 350 cubic inches on gasoline, or a turbocharged 4.8L inline-four of 290 cubic inches on diesel. Procedures, specifications, torque values, wiring diagrams and diagnostics run system by system across all of those combinations.
Engines covered
- 5.7L V8 (350 cu in) — OHV, naturally aspirated, gasoline
- 4.8L inline-four (290 cu in) — turbocharged, diesel
Body styles covered
- Straight truck, low crew cab
- Straight truck, low tilt
Trims covered
- W4S042
Known issues on the 2002 W4500 Forward. Federally, the 2002 W4500 Forward is clean, with no recalls and no owner complaints logged at NHTSA. The manual is left to cover the truck's own demands, and with a crew cab in the range that includes extra cab structure, seating and wiring alongside the standard tilt-cab work. Engine coverage runs to both the 4.8L turbodiesel and the 5.7L V8, and the chassis chapters carry brake, steering, suspension and driveline procedures with the torque values and diagnostics that go with them.
