2021 GMC Sierra 3500HD SLT

Specifications, live market data, colors, and factory features.

19 for sale right now

$35,519 – $61,031

View Listings

Specifications

401

Horsepower

464

lb-ft Torque

Seats

$57k

Base MSRP

Performance

Engine: 6.6L V-Shaped L5P - DI, DURAMAX, GEN 5 VAR. 1
Horsepower: 401 hp
Torque: 464 lb-ft
Transmission: 6-Speed Automatic
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Diesel
MPG City: 0 mpg
MPG Highway: 0 mpg
Fuel Tank: 36 gal

Dimensions

Length: 266.1″
Width: 81.9″
Height: 80.9″
Wheelbase: 172″
Curb Weight: 7,064 lbs

Body & Practicality

Body Style: Truck
Doors: 4
Seating: 6
Base MSRP: $57,000

Colors

Factory colors on 2021 GMC Sierra 3500HD SLTs for sale now.

Exterior

Summit White(white)4
Ebony Twilight Metallic(black)2
Pacific Blue Metallic(blue)1
Quicksilver Metallic(silver)1
Onyx Black(black)1
Brownstone Metallic(brown)1
White1

Interior

Jet Black(black)9
Dark Walnut(brown)1
Dark Walnut/Slate(gray)1

Live Market Data

Computed from active 2021 GMC Sierra 3500HD SLT listings nationwide, updated continuously.

For sale now19

Median price$49,913

Average price$49,351

Price range$35,519 – $61,031

Median vs. MSRP−$7,087

Avg. days on market52

Avg. mileage88,321 mi

New / Used0 / 19

Price Distribution

Price vs. Mileage

Latest SLT Listings

The newest 2021 GMC Sierra 3500HD SLTs on the market.

View all 19 →

Used 2021 GMC Sierra 3500HD

SLT

$44,075

119,354 mi

Est. $641/mo*

10 days at this dealer

WhiteBlack

Hedricks Chevrolet

Clovis, CA

Used 2021 GMC Sierra 3500HD

SLT

$48,699

90,025 mi

Est. $707/mo*

12 days at this dealer

SilverJet Black

Mauer Buick GMC

Inver Grove Heights, MN

Used 2021 GMC Sierra 3500HD

SLT

$49,913

79,133 mi

Est. $725/mo*

3 days at this dealer

BlueJet Black

Jaguar Rockford

Rockford, IL

Used 2021 GMC Sierra 3500HD

SLT

$56,598

67,484 mi

Est. $820/mo*

14 days at this dealer

Summit WhiteJet Black

Jim Click Ford

Tucson, AZ

Used 2021 GMC Sierra 3500HD

SLT

$53,299

73,714 mi

Est. $773/mo*

17 days at this dealer

BlackBlack

Saline Chevrolet

Saline, MI

Used 2021 GMC Sierra 3500HD

SLT

$56,986

57,706 mi

Est. $825/mo*

28 days at this dealer

Onyx BlackJet Black

Wilsonville Toyota

Wilsonville, OR

Used 2021 GMC Sierra 3500HD

SLT

$49,988

75,378 mi

Est. $726/mo*

31 days at this dealer

Summit WhiteJet Black

Johnson Auto Plaza

Brighton, CO

Used 2021 GMC Sierra 3500HD

SLT

$42,347

116,065 mi

Est. $617/mo*

40 days at this dealer

BlackJet Black

Walser Buick GMC Bloomington

Bloomington, MN

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The median 2021 GMC Sierra 3500HD SLT lists for $49,913 today.

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