The 2021 Chevy Silverado HD offers impressive capability right out of the box, with a stout, heavy-duty powertrain and the specs needed to get the job done. However, new buyers currently do not have access to the 2021 Chevy Silverado HD’s Advanced Trailering Package, as the optional upgrade is no longer available to order.
For now, the Advanced Trailering Package is unavailable as a result of supply constraints, GM Authority has learned. It’s uncertain when the optional upgrade will once again be available to order, or even if the package will be available before the end of Chevy Silverado HD production for the 2021 model year.
The Advanced Trailering Package for the 2021 Chevy Silverado HD is tagged with RPO code ZL6, and features the following content (relevant RPO code listed in parentheses):
- Hitch Guidance with Hitch View (PZ8)
- Advanced Trailering System (U1D)
- Chevrolet Infotainment System with 8-inch diagonal color touchscreen (IOS)
- USB ports, SiriusXM with 360L (MCR)
- HD radio (U2L)
- HD Rear Vision Camera (UVB)
Prior to its latest unavailability, the Advanced Trailering Package was offered on 2021 Chevy Silverado 2500HD LT and 3500HD LT trim levels, including all cab configurations.
As a reminder, the 2021 Chevy Silverado HD is offered with two powertrain options, including the naturally aspirated 6.6L V8 L8T gas-powered engine, which produces 401 horsepower and 464 pound-feet of torque, and connects to a six-speed automatic transmission, as well as the 6.6L V8 L5P turbodiesel Duramax, which produces 445 horsepower and 910 pound-feet of torque, and connects to a 10-speed automatic transmission.
The Silverado HD entered an all-new fourth generation for the 2020 model year. The latest Silverado HD rides on a more capable version of the GM T1 platform, and is produced at the GM Flint Assembly facility in Flint, Michigan, and the GM Fort Wayne Assembly facility in Fort Wayne, Indiana.