2002 GMC W5500 Forward Service and Repair Manual
This factory service and repair manual for the 2002 GMC W5500 Forward spans two cab arrangements, the low tilt straight truck and the low crew cab straight truck, across three trim codes: W5R042, W5S042 and W5T042. Two turbocharged diesels are covered, the 4.8L inline-four at 290 cubic inches and the 7.8L inline-six at 475. The wiring diagrams and body procedures are drawn for both cab types rather than for one, so neither has to be worked on by inference from the other.
Engines covered
- 4.8L inline-four (290 cu in) — turbocharged, diesel
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Body styles covered
- Straight truck, low tilt
- Straight truck, low crew cab
Trims covered
- W5R042
- W5S042
- W5T042
Known issues on the 2002 W5500 Forward. The federal record on the 2002 W5500 Forward is clean: no recalls, and no owner complaints in the NHTSA record. Attention therefore stays on the service content itself, which has to accommodate two engines and two cab types, with diagnostics and specifications for the turbocharged 4.8L four and the turbocharged 7.8L six, torque values for both installations, and wiring diagrams covering the tilt cab and the crew cab alike.
