2020 Chevrolet Silverado 6500 HD Service and Repair Manual
This factory service and repair manual for the 2020 Chevrolet Silverado 6500 HD has one engine to account for and two chassis forms to describe: the turbocharged 6.6L OHV V8 of 403 cubic inches on diesel, mounted in either a four-door crew cab and chassis or a conventional cab and chassis, both in Base specification. Because these trucks are delivered incomplete, the material concentrates on the cab, frame, driveline and chassis electrical work that stays the same no matter which body a customer has mounted behind it.
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 2020 Silverado 6500 HD. No recalls and no owner complaints appear on the federal record for this model year, so there is no defect history to work through. What the manual gives instead is the routine: injection and fuel supply diagnosis for the diesel V8, turbocharger and intake procedures, coolant and oil specifications, hydraulic brake service, and steering and suspension torque values for a chassis meant to carry a mounted body. Wiring diagrams trace the chassis harness that a body builder taps into, with diagnostic steps for the circuits on it.
