2021 2021 GMC Sierra HD

2021 Sierra HD

denali sierra HD AT4

Starting price

$37,300 1

Max payload up to

7,442 lbs 2

Max Torque up to

910 lb-ft 3

Tow up to

36,000 lbs. 4



KEY FEATURES

  • Best-in-class towing at 36,000 lbs5
  • Best-in-class heavy-duty cargo bed volume
  • First-ever heavy duty in its class offering Allison® 10-speed Automatic Transmission with available 6.6L Duramax® Turbo-Diesel V8 engine
  • Available ProGrade Trailering System with in-vehicle Trailering App6
  • Advanced camera views7 (now available on SLT) including industry-first transparent trailer view,8 HD Surround Vision9 and more
  • Available World’s First Six-Function MultiPro Tailgate10

Competitive Comparison

Standard
Available
× Not Available
2021 GMC Sierra HD 2021 Ford Super Duty 2021 Ram HD
Strength and Capability
Max Conv. Towing Capacity (lbs.) 20,000
(3500HD)
24,200
(450)
22,670
(2020 3500HD Diesel)
Max Towing Capacity (lbs) 36,000
(3500HD)
37,000
(450)
35,100
(3500HD Diesel)
Max Payload (lbs.) 7,442
(3500HD)
7,850 7,680
(3500HD)
10-speed Transmission ×
(8-speed)
Automatic Locking Rear Differential × ×
Hill Start Assist
Diesel Engine Exhaust Brake
StabiliTrak®
Standard Trailer Sway Control
High Strength Fully Boxed Frame
Integrated Trailer Brake Controller
Premium Purposeful Technology
15 Camera Views ×
(9 views)
×
(9 views)
Six-Function MultiPro Tailgate × ×
Transparent Trailer View × ×
Power
Max Diesel Horsepower 445 475 400 (HO)
Diesel Powertrain Warranty 5 yr/100K 5 yr/100K 5 yr/100K
Built-In 4G LTE Wi-Fi
Standard
Available
× Not Available
GMC Sierra HD 2021 Ford Super Duty 2021
Strength and Capability
Max Conv. Towing Capacity (lbs.) 20,000
(3500HD)
24,200
(450)
Max Towing Capacity (lbs) 36,000
(3500HD)
37,000
(450)
Max Payload (lbs.) 7,442
(3500HD)
7,850
10-speed Transmission
Automatic Locking Rear Differential ×
Hill Start Assist
Diesel Engine Exhaust Brake
StabiliTrak®
Standard Trailer Sway Control
High Strength Fully Boxed Frame
Integrated Trailer Brake Controller
Premium Purposeful Technology
15 Camera Views ×
(9 views)
Six-Function MultiPro Tailgate ×
Transparent Trailer View ×
Power
Max Diesel Horsepower 445 475
Diesel Powertrain Warranty 5 yr/100K 5 yr/100K
Built-In 4G LTE Wi-Fi
Standard
Available
× Not Available
GMC Sierra HD 2021 Ram HD 2021
Strength and Capability
Max Conv. Towing Capacity (lbs.) 20,000
(3500HD)
22,670
(2020 3500HD Diesel)
Max Towing Capacity (lbs) 36,000
(3500HD)
35,100
(3500HD Diesel)
Max Payload (lbs.) 7,442
(3500HD)
7,680
(3500HD)
10-speed Transmission ×
(8-speed)
Automatic Locking Rear Differential ×
Hill Start Assist
Diesel Engine Exhaust Brake
StabiliTrak®
Standard Trailer Sway Control
High Strength Fully Boxed Frame
Integrated Trailer Brake Controller
Premium Purposeful Technology
15 Camera Views ×
(9 views)
Six-Function MultiPro Tailgate ×
Transparent Trailer View ×
Power
Max Diesel Horsepower 445 400 (HO)
Diesel Powertrain Warranty 5 yr/100K 5 yr/100K
Built-In 4G LTE Wi-Fi

¹Starting at price for 2021 Terrain SLE. The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. See your GMC dealer for details. Click here to see all GMC destination freight charges.
²Requires properly equipped 3500 Regular Cab DRW Long Box 2WD model with 6.6L gas V8 engine. These maximum payload ratings are intended for comparison purposes only. Before you buy a vehicle or use it to haul people or cargo, carefully review the vehicle loading section of the Owner’s Manual and check the carrying capacity of your specific vehicle on the label on the inside of the driver’s door jamb.
³Requires available Duramax 6.6L Turbo-Diesel V8 engine.
⁴Requires Sierra 3500 HD Regular Cab Long Bed 2WD DRW with available Duramax 6.6L Turbo-Diesel V8, Max Trailering Package and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.
⁵Requires Sierra 3500 HD Regular Cab Long Bed 2WD DRW with available Duramax 6.6L Turbo-Diesel V8, Max Trailering Package and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. The weight of passengers, cargo and options or accessories may reduce the amount you can tow.
⁶App functionality and features vary with vehicle equipment and trim level. Data connection may be required. Some features require active service plan and working electrical system. Terms and limitations apply.
⁷Read the vehicle Owner’s Manual for important feature limitations and information. Some camera views requires available accessory camera and installation. Not compatible with all trailers. See your dealer for details.
⁸Read the vehicle Owner’s Manual for important feature limitations and information. Some camera views requires available accessory camera and installation. Not compatible with all trailers. See your dealer for details.
⁹Read the vehicle’s Owner’s Manual for important feature limitations and information.
¹⁰Available on 2021 base Sierra HD. Standard on SLE, SLT, AT4 and Denali 2021 trims.