Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2020 Silverado 6500 HD.
The 2020 Chevrolet Silverado 6500 HD arrives midway through a 2019–2025 model run that has generated remarkably low complaint volumes overall, with the platform peaking at just two reports in 2021 before dropping to a single complaint in 2024. That trajectory suggests the 2020 model year benefits from early-cycle refinement without the uptick seen in the following year, positioning it in a relatively quiet stretch of the truck's reliability record. For researchers, the sparse data set — never exceeding two annual complaints across seven model years — indicates a heavy-duty chassis cab that has largely avoided systemic issues, making the 2020 edition a stable reference point in the Silverado HD lineage.
Engine, drivetrain, dimensions and economy.
| Overall length | 241.3 in |
| Overall width | 81.1 in |
| Overall height | 75.6 in |
| Wheelbase | 156.7 in |
| Curb weight | 4674 lb |
| Track (front / rear) | 68.1 / 68.1 in |
Capacities, torques and tune-up values from the factory service manual.
| Camshaft Bearing/Carrier Cap Bolts or Studs | Cam thrust plate-retainer bolt: 16.0 ft-lbs |
| Oil Pump to Cylinder BLock Bolts/Studs | 18.0 ft-lbs |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Showing 1 of 1 campaigns on record for this vehicle.
General Motors, LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado Medium Duty 4500HD, 5500HD, and 6500HD vehicles. These vehicles were remedied under NHTSA Recall 25V390 with a brake jumper wire harness that… Remedy: Dealers will remove the installed wire harness, apply protective tape, and reinstall the wire harness, free of charge. Owner notification letters are planned to be mailed December…
Showing 5 of 12 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| PIP6108 | 2026-04-14 | Unknown Or Other | This PI instructs technicians to inspect the ground plane on MD Silverado vehicles with… |
| PIT3271Q | 2026-04-01 | Unknown Or Other | This preliminary information communicates information about how to determine if a wheel… |
| PIP6104 | 2026-03-09 | Unknown Or Other | This Preliminary information communicates the steps on how to save a GDS2 Session Log and… |
| PIP4902V | 2026-03-09 | Unknown Or Other | This preliminary information advises a dealer on how to email GDS2 session logs into… |
| PIT6425D | 2026-03-02 | Unknown Or Other | This Preliminary information communicates to the field on how to diagnosis a GPS issue… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.