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2021 GMC Sierra 2500 HD SLT

Truck (Double Cab) · 401 hp

Sticker from

$51,000Factory MSRP, base configuration

Market

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

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

SLT Premium Package$4,670

Texas Edition 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

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

LT275/65R20 All-Terrain Blackwall Tires$200

GMC MultiPro Tailgate Step Lights$200

High Idle Switch$200

Black Front and Rear Molded Splash Guards$190

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−$1,155

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 2500 HD is right for you?

Five trims, $35,900 to $64,900. Tap one to open it.

$35,900−$15,100Base401 hp $41,000−$10,000SLE401 hp $51,000This trimSLT401 hp $58,400+$7,400AT4401 hp $64,900+$13,900Denali401 hp

Bar heights follow the price. The widest step is $10,000, from SLE to SLT.

The numbers.

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

401hp6.6L eight-cylinder

464lb-ftTorque

4WD / RWD6-speed shiftable automatic

6Seats

6,450–6,950 lbsCurb weight

10,250–10,850 lbsGVWR

14,500–18,500 lbsMax towing

3,747–3,862 lbsMax payload

122 standard items.

Five groups, sized by how much is in each.

2 interiors

Jet Black
Dark Walnut/Slate

Both leather.

9 factory paints

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

Check this car's historyEnter the VIN, tap one insurance quote, and the report unlocks.Check a VIN

Overall—Not rated

Frontal—Not rated

Side—Not rated

Rollover—Not rated

NHTSA has not published ratings for the 2021 Sierra 2500 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 2500 HD cost to insure?

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Other years of the Sierra 2500 HD SLT.

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