The new 2021 GMC Sierra is the third model year of the latest fourth-generation nameplate, arriving with a few changes and updates over the preceding 2020 model-year vehicle. Now, GM Authority has learned that new 2021 GMC Sierra 1500 orders in the Crew Cab Standard Box configuration are only available with 4WD.
This is a significant change, and it’s uncertain at this time if the configuration restriction will be in place for the rest of the 2021 model year.
Meanwhile, Regular Cab and Double Cab configurations of the 2021 GMC Sierra 1500 can be ordered with either 2WD or 4WD, as can Crew Cab Short Box configurations. However, Crew Cab Standard Box configurations are only available with 4WD.
We reached out to General Motors for an explanation why new Crew Cab Standard Box orders are restricted to 4WD, but did not receive a reply. That said, it’s possible that given new GMC Sierra pickups are in very short supply, General Motors opted to simplify the ordering process and reduce the number of build configurations available.
The latest 2021 GMC Sierra 1500 arrives with a number of updates and changes, including the addition of four new exterior colors, new 22-inch Multi-spoke polished wheels, and the addition of wireless Apple CarPlay and Android Auto. What’s more, the GMC MultiPro Tailgate is now available on SLE and AT4 trims.
With regard to the mechanical changes, models equipped with either the turbocharged 2.7L I4 L3B gas engine or the 3.0L I6 LM2 turbo-diesel Duramax engine offer higher maximum tow ratings than similarly equipped 2020 model-year vehicles. Now, nearly every configuration equipped with the turbo 2.7L engine adds an additional 2,300 pounds of trailering capacity, up to 9,200 pounds maximum, while models equipped with the 3.0L I6 turbo-diesel engine add an additional 1,900 pounds of trailering capacity with 2WD configurations, up to 9,300 pounds maximum.