2008 Chevrolet T6500 Service and Repair Manual

This factory service and repair manual for the 2008 Chevrolet T6500 has one engine to specify and two builds to serve. The engine is a turbocharged diesel inline-six, 7.8L of 475 cubic inches, and the builds are F6B042 and T6F042 versions of the low tilt cab straight truck. Diagnostics for an engine like this begin with fuel and air before anything is disassembled, and the manual is arranged accordingly, with test procedures and specifications ahead of the overhaul sections they lead into.

Engines covered

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

Body styles covered

• Straight truck, low tilt

Trims covered

• F6B042
• T6F042

Known issues on the 2008 T6500. The manual is a reference for keeping the truck in service: injection and induction diagnostics for the turbocharged diesel, cooling and lubrication specifications it depends on under load, in-chassis and overhaul procedures with clearances and service limits, torque values given at the point of assembly, and wiring diagrams that show each circuit with its connectors and grounds so an electrical symptom can be traced instead of guessed.