This factory service and repair manual for the 2015 Chevrolet Express 4500 runs to 403 cubic inches of turbocharged diesel V8 or 364 cubic inches of naturally aspirated gasoline V8, the latter available on compressed natural gas or flex-fuel. Both are overhead-valve, and both live in the same two-door cutaway, sold only in Base form. Because that chassis is the vehicle's whole factory identity, the frame, brake, axle and steering sections carry as much weight here as the engine chapters do.
Engines covered
- 6.6L V8 (403 cu in) — OHV, turbocharged, diesel
- 6.0L V8 (364 cu in) — OHV, naturally aspirated, CNG or flex-fuel
Body styles covered
- 2-door cutaway
Trims covered
- Base
Known issues on the 2015 Express 4500. The federal tally for this chassis is zero on both counts, no recalls and no owner complaints. The manual instead documents the work: engine mechanical and control diagnosis for the diesel and the gasoline V8, fuel handling for diesel, natural gas and ethanol blends, transmission and driveline overhaul, rear axle setup with backlash and preload figures, brake hydraulic and antilock service, steering and suspension alignment specifications, and the wiring diagrams that map the cab and chassis circuits.
