The 2021 GMC Sierra 1500 AT4 with the 6.2L V8 engine has a maximum towing capacity of 9,200 pounds with the short bed and 8,800 pounds with the long bed. This is when equipped with the Max Trailering Package, which includes a heavy-duty trailer hitch, integrated trailer brake controller, and 7-pin connector.
Here is a table of the towing capacity for the 2021 GMC Sierra 1500 AT4 by engine and cab configuration:
|Engine||Cab Configuration||Bed Length||Towing Capacity|
|6.2L V8||Crew Cab||Short Bed||9,200 lbs|
|6.2L V8||Crew Cab||Long Bed||8,800 lbs|
|6.2L V8||Double Cab||Short Bed||9,000 lbs|
|6.2L V8||Double Cab||Long Bed||8,600 lbs|
|6.2L V8||Regular Cab||Short Bed||8,900 lbs|
|6.2L V8||Regular Cab||Long Bed||8,500 lbs|
Important: It is important to note that the towing capacity of a vehicle is just one factor to consider when choosing a trailer. Other factors such as the weight of the trailer payload, the tongue weight, and the overall length of the trailer will also affect the vehicle’s performance and safety. It is always best to consult your vehicle’s owner’s manual for specific towing recommendations.