This factory service and repair manual for the 2005 GMC T7500 covers the T7F042 chassis with the turbocharged 7.8L inline-six diesel, 475 cubic inches, as its only listed engine. A single power plant means the diagnostic trees run one way rather than branching, and it means the torque tables and clearance specifications in the book can be read without checking which build is in front of you. Coverage extends from the injection and air-handling side of that diesel out through cooling, driveline, brakes and the chassis wiring that ties them together.
Engines covered
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Trims covered
- T7F042
Known issues on the 2005 T7500. No recalls are on the federal record for this truck and NHTSA holds no owner complaints against it. That silence is common on medium-duty commercial equipment and should not be mistaken for a maintenance plan. The manual is the plan: removal and installation procedures for the 7.8L diesel and its accessories, published specifications and torque values throughout, and wiring diagrams paired with diagnostic sequences for the electrical faults that strand a truck.
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 dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed fo
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected mo
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the deal
Showing the 8 most recent of 99 technical service bulletins on file with NHTSA.
