1999 Volvo WG Service and Repair Manual
1999 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
- WG42T Tractor Truck - Medium Conventional
- WG42 Straight Truck - Medium Conventional
- WG64T Tractor Truck - Medium Conventional
Engines covered
- 12.1L 740Cu. In. 6 DIESEL
- 10.5L 638Cu. 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
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH A STEEL FUEL TANK. THE CLOSURE ONLY FUEL TANK CAP, INSTALLED ON THE STEEL FUEL TANK, FAILED WHEN THE TANK WAS DROPPED FROM A 10' HEIGHT AS REQUIR
FUEL LEAKAGE COULD OCCUR, INCREASING THE RISK OF A FIRE.
OWNERS WILL BE PROVIDED WITH A NEW FUEL TANK CAP.
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
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
Showing the 8 most recent of 20 technical service bulletins on file with NHTSA.
DRIVING DOWN A PERFECTLY STRAIGHT HIGHWAY,I HERD A NOISE AND THE LOADED TRUCK INSTANTLY TOOK A HARD LEFT FLIPPING END OVER END TWICE AND I CAN'T FIGURE OUT WHAT HAPPENED. PLEASE INVESTIGATE THIS ACCID
STEERING TOOK A HARD LEFT,AFTER THE ACCIDENT I SEEN WHERE THE UPPER STEER ARM HAD CAME OFF THE GEAR BOX SPLINE. *TR
INSTRUMENT PANEL LIGHTS ARE INOPERATIVE, DEALER AND MANUFACTURER WERE NOTIFIED. FEEL FREE TO PROVIDE ANY FURTHER INFORMATION. *AK
