2009 GMC W5500HD Forward Service and Repair Manual

This factory service and repair manual for the 2009 GMC W5500HD Forward covers a truck listed with one trim code, W5S042, and one diesel engine: the turbocharged 5.2L inline-four displacing 317 cubic inches. For a shop, that simplicity is the point. No time is spent establishing which build is on the lift before the correct procedure, specification or torque value can be read, and the diagnostics apply directly to the hardware in front of the technician.

Engines covered

• 5.2L inline-four (317 cu in) — turbocharged, diesel

Trims covered

• W5S042

Known issues on the 2009 W5500HD Forward. The manual's contribution is its everyday content: system-organized procedures for the turbocharged 5.2L inline-four and the chassis it powers, the specifications and torque values those procedures depend on, and complete wiring diagrams for electrical diagnosis.