2001 Volvo WG service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- WG64 Straight Truck - Medium Conventional
- WG42 Straight Truck - Medium Conventional
Engines covered
- 12.1L 740Cu. In. 6 DIESEL
- 10.8L 10834CC 661Cu. In. l6 DIESEL Turbocharged
- 14.0L 14013CC 855Cu. In. l6 DIESEL Turbocharged
- 11.1L 11096CC 677Cu. In. l6 DIESEL Turbo/Aftercooled
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
CERTAIN HEAVY DUTY CLASS 8 TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THE TWO TAIL LAMPS, BAC
IT MAY NOT ALLOW THE DRIVER OF A REARWARD APPROACHING VEHICLE TO HAVE FULL VIEW OF THE LAMPS.
DEALERS WILL ATTACH THE TWO TAIL LAMPS, BACK-UP LAMP, AND THE LICENSE TAP LAMP ON STIFFER BRACKETS.
Engine Control Module (EMS) Software (MSW) Information August 2022; Improvement List (Change Log) - US21+OBD22 (13L VGT, TC) And US17+OBD22 (11L) Emissions
Volvo Chassis - Equipped with An Automated Manual Transmission (AMT, iShift) - SNV 19-002 - AMT Oil Filter Housing Corrosion
Volvo Chassis - Drag Link Inspection And Replacement Criteria
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
AMT Control Housing Bench Testing - False Failures
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP)
DTC U012100 - Lost Communication With Anti-Lock Brake System (ABS) Control Module, No Additional Information
Showing the 8 most recent of 22 technical service bulletins on file with NHTSA.
