The all-new 2020 GMC Sierra HD goes on sale later this year in 2500HD and 3500HD dual rear wheel and single rear wheel configurations. It is powered by the 6.6L Duramax turbo-diesel with a new 10-speed Allison transmission. It has a towing capacity in excess of 30,000 pounds.
2020 GMC Sierra HD Can Now Tow 30,000 Pounds
The 2020 GMC Sierra Heavy Duty pickups, which include the Sierra 2500HD and 3500HD, can now tow more than 30,000 pounds when properly equipped and will offer a camera system to improve visibility when towing, GM has announced.