2008 Chevrolet T8500 Service and Repair Manual

This factory service and repair manual for the 2008 Chevrolet T8500 belongs to a straight truck whose cab tilts forward for engine access, sold in F8B042 and F8B064 form and powered by the turbocharged 7.8L inline-six of 475 cubic inches on diesel. The book follows the truck rather than the build code, taking the engine and its fuel, air, cooling and lubrication systems first, then the driveline and chassis, then the cab and its electrical circuits, with the specifications and torque values placed where the work happens.

Engines covered

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

Body styles covered

• Straight truck, low tilt

Trims covered

• F8B042
• F8B064

Known issues on the 2008 T8500. A truck like this needs correct service, and the manual is written for that: diagnostic routines that isolate a fault before parts come off, engine measurements that decide whether a component is reused or replaced, cooling and lubrication figures for sustained loaded work, torque values at every assembly step, and wiring diagrams that make an electrical trace straightforward.