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2020 GMC Sierra 3500 HD AT4

Truck (Crew Cab) · 401 hp

Sticker from

$58,900Factory MSRP, base configuration

Market

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

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

AT4 Premium Package$3,465

20" High Gloss Black Painted Wheels$2,995

Technology Package$2,125

Rear Seat Infotainment System w/DVD Player$1,995

AT4 Preferred Package$1,475

20" 6-Spoke Bright Machined Aluminum Wheels w/High Gloss Black Accents$1,100

Power Glass Sunroof$995

Black 3" Round Off-Road Assist Steps$965

Driver Alert Package I$890

Gooseneck/5th Wheel Package$795

6" Rectangular Black Tubular Assist Steps$750

Body Color Wheel Arch Moldings$685

Driver Alert Package II$645

Auxiliary Trailer Camera$595

Cargo Convenience Package$515

Snow Plow Prep Package w/Dual Alternators$380

Dual Alternators$380

Gooseneck Hitch Package$295

Lockable Console Vault$295

Rear Under Seat Storage$265

Bed View Camera$250

High Idle Switch$200

Black Front and Rear Molded Splash Guards$180

Rubber Bed Mat$155

Snow Plow Prep Package$150

220 Amp Alternator$150

Auxiliary Battery$135

Engine Block Heater$100

Wheel Locks$75

Smoked Amber LED Roof Marker Lamps$55

Trailer Tire Pressure Monitor Sensors$50

Heavy Duty Front Spring Package$45

Trailering Wiring Provisions$35

California Emissions Override—

California State Emissions Requirements—

Federal Emissions Override—

Federal Emissions Requirements—

Front License Plate Kit—

LT275/65R20 All-Terrain Blackwall Tires—

Northeast Emissions—

Standard Tailgate—

State-Specific Emissions Override—

Which Sierra 3500 HD is right for you?

Five trims, $36,800 to $64,900. Tap one to open it.

$36,800−$22,100Base401 hp $41,200−$17,700SLE401 hp $53,600−$5,300SLT401 hp $58,900This trimAT4401 hp $64,900+$6,000Denali401 hp

Bar heights follow the price. The widest step is $12,400, from SLE to SLT.

The numbers.

Two configurations: four-wheel drive, 6-speed automatic.

401hp6.6L eight-cylinder

464lb-ftTorque

4WD6-speed shiftable automatic

5Seats

6,947–7,064 lbsCurb weight

11,350–11,500 lbsGVWR

20,000 lbsMax towing

4,365–4,398 lbsMax payload

121 standard items.

Four groups, sized by how much is in each.

1 interior

Jet Black with Kalahari accents

Leather.

7 factory paints

Summit White
Dark Sky Metallic
Carbon Black Metallic
Red Quartz Tintcoat
Pacific Blue Metallic
Onyx Black
Brownstone Metallic

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 2020 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 AT4.

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