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2021 GMC Sierra 3500 HD SLT

Truck (Crew Cab) · 401 hp

Sticker from

$54,000Factory MSRP, base configuration

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50 factory options, from $35 to $9,890.

Duramax 6.6L Turbo-Diesel V8 Engine$9,890

Texas Edition SLT Premium Package$4,670

SLT Premium Package$4,670

SLT Preferred Package$1,670

SLT Convenience Package$1,500

Gooseneck/5th Wheel Package$1,340

Power Glass Sunroof$995

Assist Step and Floor Liner Package$895

Driver Alert Package I$890

MultiPro Audio System by Kicker$815

20" Machined Aluminum Wheels w/Bright Silver Accents$800

Chromed 6" Rectangular Tubular Assist Steps$795

6" Rectangular Chromed Tubular Assist Steps$775

Body Color Wheel Arch Moldings$685

Driver Alert Package II$645

Auxiliary Trailer Camera$595

Spray-On Bed Liner$545

Cargo Convenience Package$515

LT275/70R18 All-Terrain Blackwall Spare Tire$380

Dual Alternators$380

GMC Protection Package$370

Lockable Console Vault$295

Gooseneck Hitch Package$295

Rear Under Seat Storage$275

Bed View Camera$250

All-Weather Floor Liner$210

High Idle Switch$200

GMC MultiPro Tailgate Step Lights$200

LT275/65R20 All-Terrain Blackwall Tires$200

Black Front and Rear Molded Splash Guards$190

Upfitter Switch Kit$150

Underbody Shield$150

220 Amp Alternator$150

Auxiliary Battery$135

Premium Front Floor Liners$130

Cargo Tie-Down Rings$105

Engine Block Heater$100

Console Insert Organizer Tray$70

Smoked Amber LED Roof Marker Lamps$55

Trailer Tire Pressure Monitor Sensors$50

Heavy Duty Front Spring/Camper Package$45

Trailering Wiring Provisions$35

Pickup Bed Delete−$2,125

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.

$37,100−$16,900Base401 hp $42,200−$11,800SLE401 hp $54,000This trimSLT401 hp $59,600+$5,600AT4401 hp $66,100+$12,100Denali401 hp

Bar heights follow the price. The widest step is $11,800, from SLE to SLT.

The numbers.

Six configurations: rear-wheel or four-wheel drive, 6-speed automatic.

401hp6.6L eight-cylinder

464lb-ftTorque

RWD / 4WD6-speed shiftable automatic

6Seats

6,647–7,352 lbsCurb weight

11,000–14,000 lbsGVWR

20,000 lbsMax towing

4,316–6,894 lbsMax payload

123 standard items.

Five groups, sized by how much is in each.

2 interiors

Jet Black
Dark Walnut/Slate

Both leather.

9 factory paints

White Frost Tricoat
Quicksilver Metallic
Cardinal Red
Onyx Black
Cayenne Red Tintcoat
Summit White
Brownstone Metallic
Ebony Twilight Metallic
Pacific Blue 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.

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Overall—Not rated

Frontal—Not rated

Side—Not rated

Rollover—Not rated

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

See extended plan pricesLive prices for this car. They depend on its age and mileage.See prices

What would this Sierra 3500 HD cost to insure?

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Other years of the Sierra 3500 HD SLT.

Pictures show this year's car in another paint. Starting MSRP is before destination, taxes and dealer fees.