This factory service and repair manual for the 2008 GMC T6500 covers the T6F042 chassis fitted with the 7.8L turbocharged inline-six diesel, an engine of 475 cubic inches. Everything in the book points at that one combination, which is the useful thing about a single-specification manual: no cross-referencing between engine options, and no separate torque tables to choose between. Engine, driveline, brakes, steering, suspension, frame, body and wiring are each documented with their own procedures, specifications, torque values and diagnostic routines.
Engines covered
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Trims covered
- T6F042
Known issues on the 2008 T6500. No recall has been issued for this model year and no owner complaint has been logged with NHTSA, leaving a clean federal record. That leaves the manual to do what it does regardless: give the specifications and torque values for the 7.8L turbocharged diesel six, the overhaul and adjustment procedures for the driveline, service brakes, steering and suspension, and the wiring diagrams and diagnostic steps for the chassis circuits — the material a technician needs when the truck's history offers no clue.
New Vehicle Monitoring Programs Section in IVH
This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
Showing the 8 most recent of 143 technical service bulletins on file with NHTSA.
