2001 GMC W4500 Forward Service and Repair Manual
This factory service and repair manual for the 2001 GMC W4500 Forward documents a low-tilt straight truck built to one code, W4S042, and powered by one of two engines. A naturally aspirated 5.7L overhead-valve V8 of 350 cubic inches handles the gasoline side; a turbocharged 4.8L inline-four of 290 cubic inches handles the diesel side. The book is organized so that the shared truck — brakes, steering, driveline, cab and body — is covered once, with engine-specific procedures, specifications, torque values, wiring diagrams and diagnostics kept in their own chapters.
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 tilt
Trims covered
- W4S042
Known issues on the 2001 W4500 Forward. One owner complaint is on record with NHTSA for the 2001 W4500 Forward, and it concerns the service brakes. That is the system a medium-duty truck asks the most of, and it is covered here in depth: brake component removal and installation, lining and drum or rotor specifications, hydraulic bleeding procedures, pedal and pushrod adjustment, fastener torque values, and diagnostics for low pedal, pull, drag and warning-lamp complaints, along with the wiring diagrams for the circuits that monitor the system.
