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2021 GMC Sierra 3500 HD Denali
Truck (Crew Cab) · 401 hp
Sticker from
$66,100Factory MSRP, base configuration
Market
Too few listings to publish a market price.
Own one? Yours has a number of its own.
Track what yours is worthA fresh estimate every month, in one short email. Not an offer to buy.Start tracking39 factory options, from $35 to $9,750.
Duramax 6.6L Turbo-Diesel V8 Engine$9,750
20" Chrome Aluminum Wheels$2,995
Denali Black Diamond Edition$2,990
20" High Gloss Black Aluminum Wheels w/Machined Finish$1,995
20" High Gloss Black Painted Wheels$1,995
Denali Ultimate Package$1,770
Technology Package$1,475
Power Retractable Assist Steps$1,100
Power Glass Sunroof$995
MultiPro Audio System by Kicker$815
Body Color Wheel Arch Moldings$685
Auxiliary Trailer Camera$595
Gooseneck/5th Wheel Prep Package$545
Cargo Convenience Package$515
Dual Alternators$380
GMC Protection Package$370
Snow Plow Prep/Camper Package$300
Gooseneck Hitch Package$295
Lockable Console Vault$295
Rear Under Seat Storage$275
All-Weather Floor Liner$210
GMC MultiPro Tailgate Step Lights$200
High Idle Switch$200
Black Front and Rear Molded Splash Guards$190
220 Amp Alternator$150
Auxiliary Battery$135
Premium Front Floor Liners$130
Cargo Tie-Down Rings$105
Engine Block Heater$100
Trailer Tire Pressure Monitor Sensors$50
Heavy Duty Front Spring/Camper Package$45
Trailering Wiring Provisions$35
California Emissions Override—
California State Emissions Requirements—
Federal Emissions Override—
Federal Emissions Requirements—
Front License Plate Kit—
Northeast Emissions—
State-Specific Emissions Override—
Which Sierra 3500 HD is right for you?
Five trims, $37,100 to $66,100. Tap one to open it.
Bar heights follow the price. The widest step is $11,800, from SLE to SLT.
The numbers.
Three configurations: four-wheel drive, 6-speed automatic.
401hp6.6L eight-cylinder
464lb-ftTorque
4WD6-speed shiftable automatic
5Seats
6,947–7,352 lbsCurb weight
11,350–14,000 lbsGVWR
20,000 lbsMax towing
4,365–6,610 lbsMax payload
136 standard items.
Five groups, sized by how much is in each.
- trip computer
- compass
- external temperature display
- tachometer
- clock
- Front head room
- Front leg room
- Front shoulder room
- Front hip room
- premium leather
- bucket front seats
- 8-way power driver seat
- height adjustable driver seat
- Driver seat with power adjustable lumbar support
- 2 memorized driver seat settings
- 8-way power passenger seat
- height adjustable passenger seat
- Passenger seat with power adjustable lumbar support
- multi-level heated driver seat
- multi-level heated passenger seat
- ventilated driver seat
- ventilated passenger seat
- Rear head room
- Rear leg room
- Rear shoulder room
- Rear hip room
- Split-folding rear seatback
- folding with storage center armrest
- multi-level heated
- 4 one-touch power windows
- hands-free entry
- Reverse tilt dual mirrors provides curb view when vehicle in reverse
- Heated mirrors
- keyless ignition
- tilt and telescopic steering wheel
- Audio and cruise controls on steering wheel
- power steering
- front, side, and rear view camera
- front and rear parking sensors
- Wireless charging
- cruise control
- universal remote transmitter (for garage door, security system, etc.)
- front and rear cupholders
- front and rear door pockets
- front seatback storage
- leather steering wheel
- heated steering wheel
- Dual zone front climate control
- rear ventilation ducts
- Sun sensor
- Dual illuminating vanity mirrors
- electrochromatic inside rearview mirror
- turn signal in mirrors
- polished alloy wheels
- 20 in. wheels
- All terrain tires
- LT275/65R20 tires
- fullsize non-matching spare tire
- underbody mounted spare tire
- Fuel type
- Range in miles (city/hwy)
- Fuel tank capacity
- Length
- Overall width without mirrors
- Height
- Wheelbase
- Bed length
- Turning circle
- Ground clearance
- Curb weight
- Maximum towing capacity
- Maximum payload
- Gross weight
- Country of final assembly
- front independent suspension
- Stabilizer bar stabilizer bar
- Base engine size
- Cylinders
- Base engine type
- Horsepower
- Torque
- Valves
- Cam type
- Valve timing
- direct injection
- Transmission
- Drive type
- on demand 4WD
- electronic hi-lo gear selection
- automatic locking hubs
- Rear locking differential
- descent control
- blind spot and lane departure warnings accident avoidance system
- Rear cross traffic alert
- pre-collision safety system
- post-collision safety system
- dual front side-mounted airbags
- front and rear head airbags
- Passenger airbag occupant sensing deactivation
- stability control
- traction control
- child seat anchors
- Rear door child safety locks
- 4-wheel ABS
- Front and rear ventilated disc brakes
- tire pressure monitoring
- dusk sensing headlamps
- auto delay off headlamps
- LED headlamp
- daytime running lights
- front fog/driving lights
- Turn signal mirrors
- 2 front headrests
- Front height adjustable headrests
- 2 rear headrests
- Rear height adjustable headrests
- Rear center 3-point belt
- engine immobilizer
- AM/FM stereo
- Bose premium brand speakers
- 7 total speakers
- 1 subwoofer(s)
- Android Auto/Apple CarPlay
- USB connection
- auxiliary audio input and USB with external media control
- memory card slot
- satellite radio satellite radio
- speed sensitive volume control
- Emergency Service
- Airbag Deployment Notification
- Stolen Vehicle Tracking/Assistance
- Hands-Free Calling
- Roadside Assistance
- Concierge Service
- Destination guidance (also Turn-by-Turn Navigation)
- Destination Download
2 interiors
- Dark Walnut/Dark Ash Grey
- Jet Black
Both premium leather.
9 factory paints
- Summit White
- Hunter Metallic
- Cayenne Red Tintcoat
- White Frost Tricoat
- Onyx Black
- Carbon Black Metallic
- Quicksilver Metallic
- Pacific Blue Metallic
- Ebony Twilight Metallic
8 of the 9 are shown on the car at the top.
Safety and recalls
No recall campaigns on file.
Recalls are settled per car, not per model. Check the one you are buying.
NHTSA has not published ratings for the 2021 Sierra 3500 HD. A model year is often unrated for a year or more after it goes on sale.
NHTSA NCAP · checked Oct 2026
Factory coverage.
It runs from the first sale date, not the model year.
Basic
3 yr / 36,000 mi
Powertrain
5 yr / 60,000 mi
Rust
6 yr / 100,000 mi
Roadside
5 yr / 60,000 mi
Maintenance
1 yr
Sold2 yr4 yr6 yr
Sponsored · Insurance offers
What would this Sierra 3500 HD cost to insure?
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Other years of the Sierra 3500 HD Denali.
2022 Sierra 3500 HD Denali
$66,700$600 more8 colors · starting MSRP
2020 Sierra 3500 HD Denali
$64,900$1,200 less8 colors · starting MSRP
2023 Sierra 3500 HD Denali
$74,300$8,200 more9 colors · starting MSRPPictures show this year's car in another paint. Starting MSRP is before destination, taxes and dealer fees.