2023 Chevrolet Silverado 6500 HD Service and Repair Manual

This factory service and repair manual for the 2023 Chevrolet Silverado 6500 HD describes a settled specification: one turbocharged 6.6L OHV V8 of 403 cubic inches burning diesel, one Base equipment level, and two chassis layouts, a four-door crew cab and chassis and a conventional cab and chassis. For a shop that sees these trucks with dump bodies, service bodies and boxes bolted to the rails, the useful part is that everything ahead of the mounting is documented as one vehicle, with one set of specifications and torque values.

Engines covered

• 6.6L V8 (403 cu in) — OHV, turbocharged, diesel

Body styles covered

• 4-door cab & chassis, crew cab
• Cab & chassis, conventional

Trims covered

• Base

Known issues on the 2023 Silverado 6500 HD. Neither a recall nor an owner complaint has been recorded against this model year on the federal record. The manual is used for maintenance and repair rather than for chasing a known defect: diesel fuel and injection service, turbocharger and cooling work, transmission and axle procedures, hydraulic brake overhaul, and the diagnostic trees for a chassis electrical system that a mounted body draws its power from. Specifications and torque values accompany each of those systems, and the wiring diagrams cover the circuits that link them.