This factory service and repair manual for the 2007 GMC T7500 documents the T7F042 with the turbocharged 7.8L inline-six diesel, 475 cubic inches, the only engine listed against the year. Trucks of this class spend their lives on short runs and heavy loads, and the manual reflects that, giving service procedures for the engine and its supporting systems, the published specifications and torque values needed to put them back together correctly, and wiring diagrams with diagnostic sequences for the chassis circuits that carry power, lighting and brake signals.
Engines covered
- 7.8L inline-six (475 cu in) — turbocharged, diesel
Trims covered
- T7F042
Known issues on the 2007 T7500. Nothing sits on the federal record for this model year: no recalls, and no owner complaints logged with NHTSA. That leaves diagnosis where it belongs, with the symptom in front of you and a book that explains the system behind it. Injection and air handling on the 7.8L diesel, cooling, brakes and driveline all have their own procedures, specifications and torque values, backed by wiring diagrams for the chassis circuits.
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).
This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
Showing the 8 most recent of 134 technical service bulletins on file with NHTSA.
