GMC Sierra HD 3500 Denali 2021

The GMC Sierra 3500HD Denali 2021 edition offers a 4WD crew cab with a standard or long box. GMC gave the 2021 3500HD Denali a bold exterior with attention to details including chrome details, a massive grille, a variety of exterior colors, and dark tint windows.

Denali’s eye-catching exterior features many exclusives that help give the vehicle its signature look: Signature Denali grille with high-gloss mesh and chrome inserts, 6" chrome Assist Steps, chrome Vertical Front Recovery Hooks, standard 20" Multi-Dimensional Polished Aluminum Wheels and more.

The 2021 Sierra 3500HD continues to impress truck buyers with its interior features. The cabin of the truck is spacious and offers a variety of Denali-exclusive features including dual climate control, all-weather floor liners, premium backseats, large cargo storage areas and a cargo organizer too.

1GMC left nothing out when adding technology to the 2021 edition of the 3500HD Denali. The technologically advanced heavy-duty truck features advanced connectivity options, superior convenience via an easy-to-use infotainment system and a BOSE sound system. The car's Bluetooth technology easily connects to Amazon Alexa, Apple Carplay, and Android Auto too. The truck also offers Sirius XM.

2Easily keep tabs on your truck and trailer with up to 15 different available camera views including HD Surround Vision, Rear Camera Mirror and Bed View Camera — more than any competitor — to optimize the view around the truck and compatible trailers.

Baton Rouge drivers can count on the Sierra 3500HD Denali to perform anywhere at anytime. Drivers can choose between the 6.6L V8 engine or the 6.6L V8 diesel engine. Depending on engine choice, the 2021 heavy-duty Denali will deliver 401 to 445 horsepower and torque that ranges from 464 to 910.

If you're hauling a boat or trailer, the 3500HD GMC Denali won't let you down. The pick-up has an outrageous towing capacity of 14,500lbs and payload of 4,403 to 4,441.

When it comes to safety, you can count on the 3500HD Denali to keep you safer on the road, especially when hauling a trailer. GMC offers 15 camera views to help you keep an eye on your truck and what you're towing at the same time. In addition to a powerful camera, the vehicle also offers safety and driver lane departure assistance to help you and your trailer stay on the right side of the road.

Front and rear parking assistance is also available to make parking easier. The ProGrade Trailering System is also an added bonus for anyone that wants the Denali to get stuff done. With advanced lighting, side bed steps and much more, the GMC Sierra 3500HD is equipped to handle anything life hands you throughout the day.

Exterior

Deletion of two exterior color options
Addition of three exterior color options
Deletion of 18-inch (45.7 cm) 6-spoke machined aluminum extended wheels with high gloss Black accents
Addition of AT4 high clearance step (LPO-level item)
Addition of power-retractable Assist steps with stainless steel accents
Includes LED lights
Addition of new, high gloss Black mirror caps for AT4 models
Addition of 18-inch (45.7 cm) machined aluminum wheel with Dark Grey metallic accents (PXD)
Addition of 20-inch (50.8 cm) high gloss Black painted aluminum wheels (RTJ)
Addition of Bedside Storage, right hand and left hand side
Addition of Tie-Downs option – includes 4
Addition of 20-inch Transit wheels for 20-inch (LPO-level wheels)
Addition of 20-inch machined aluminum wheel wheels with new finish and bright Silver accents
Addition of 20-inch wheels with new finish, machined aluminum with high gloss Black accents
Interior

Deletion of front 40/20/40 split-bench seat
Deletion of single USB Port
Addition of Premium floor liners with removable carpet inserts
Front and rear
Addition of inside rearview auto dimming mirror with partial video display
Addition of Bed View Camera in the CHMSL to show a view of the cargo bed
Display located in rearview mirror
Front 40/20/40 split-bench seat with upper covered armrest storage is now standard on base (1SA) Sierra HD models
SiriusXM is now standard on SLE models and available on base models
Mechanical

Gasoline engine options are now E85 FlexFuel capable
Standard tailgate is now available on SLE models
Remains standard on base models, and is no longer available for SLT, AT4, or Denali models
Deletion of manual tailgate function with lift assist
GMC MultiPro Tailgate is now standard on SLE models
For the 2020 models, SLE models came standard with
Gooseneck / 5th Wheel Package is not available on Denali you now order the Gooseneck / 5th Wheel Prep Package free flow option
Denali models only
ProGrade Trailering System no longer includes Sirius X, EZ Lift, or power lock and release tailgate
Packaging

Addition of the AT4 Premium Plus Package
Addition of Denali Black Diamond Edition
Addition of the X31 Off-Road and Protection Package
Addition of 1SA Safety Confidence Package
Technology Package no longer includes Bed View Camera or HD Surround Vision
New RPO code designation for SLT Premium Plus Package
New RPO code designation for Texas Edition SLT Premium Plus Package
SLE Convenience Package no longer includes EZ Lift power lock and release tailgate
New SLT Preferred Package contents
New AT4 Preferred Package contents