2009 GMC T6500 Service and Repair Manual

This factory service and repair manual for the 2009 GMC T6500 concerns one chassis designation, T6F042, and one engine, a 7.8L turbocharged inline-six diesel of 475 cubic inches. The engine sections cover its mechanical service and fueling; the material after them works through the transmission and driveline, the brake systems, the steering and suspension, the frame and the body. Specifications, torque values, wiring diagrams and diagnostic procedures are given for each system, all of them written to this single build.

Engines covered

• 7.8L inline-six (475 cu in) — turbocharged, diesel

Trims covered

• T6F042

Known issues on the 2009 T6500. The manual's value sits in its reference content: the 7.8L turbocharged diesel six with its service specifications and torque values, the driveline, brake, steering and suspension procedures for a medium-duty chassis, and the wiring diagrams and diagnostic routines behind them. That documentation is where a repair plan has to start.