2026 GMC Sierra 3500 SLE

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

348 for sale right now

$52,212 – $95,002

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Specifications

Performance

Engine: 6.6L 8-Cylinder L8T
Transmission: Automatic
Drivetrain: 4WD

Fuel & Efficiency

Fuel: Gasoline
MPG City: 0 mpg
MPG Highway: 0 mpg

Body & Practicality

Body Style: Truck
Doors: 2

Colors

Factory colors on 2026 GMC Sierra 3500 SLEs for sale now.

Exterior

Summit White(white)75
Onyx Black(black)47
Sterling Metallic(silver)24
Cardinal Red(red)18
Sterling(silver)11
Titanium Rush Metallic(silver)10
White8
White Sands(white)5
Coastal Dune(white)5
Black4

Interior

Jet Black(black)156
Black36
Dark Walnut/Slate(gray)5
Jet Black, Cloth seat trim(black)4
Jet Black, Cloth Seat Trim(blue)3
WITH CENTER ARMREST STORAGE(blue)2
H0u Jet Black(black)2
Jet Black Cloth Seat Trim(blue)2
H0U/JET BLACK(black)1
Jet Black Cloth(black)1

Live Market Data

Computed from active 2026 GMC Sierra 3500 SLE listings nationwide, updated continuously.

For sale now348

Median price$69,512

Average price$69,375

Price range$52,212 – $95,002

Avg. days on market86

Avg. mileage236 mi

New / Used335 / 13

Price Distribution

Price vs. Mileage

Latest SLE Listings

The newest 2026 GMC Sierra 3500 SLEs on the market.

View all 348 →

New 2026 GMC Sierra 3500

SLE

$83,568

1 mi

Est. $1,204/mo*

3 days at this dealer

Gray

Kirksville Motor Co.

Kirksville, MO

New 2026 GMC Sierra 3500

SLE

$71,693

1 mi

Est. $1,035/mo*

3 days at this dealer

Brown

Kirksville Motor Co.

Kirksville, MO

New 2026 GMC Sierra 3500

SLE

$65,614

MSRP: $66,6141.5% off

5 mi

Est. $948/mo*

3 days at this dealer

SterlingJet Black

Criswell Chevrolet of Gaithersburg

Gaithersburg, MD

New 2026 GMC Sierra 3500

SLE

$65,068

MSRP: $67,8604.1% off

7 mi

Est. $941/mo*

3 days at this dealer

Summit WhiteJet Black

Laura Buick GMC

Collinsville, IL

New 2026 GMC Sierra 3500

SLE

$79,230

5 mi

Est. $1,143/mo*

4 days at this dealer

Gba/Onyx BlackH0u/Jet Black

Group 1 Buick GMC North

Houston, TX

New 2026 GMC Sierra 3500

SLE

$70,274

MSRP: $80,22012.4% off

7 mi

Est. $1,015/mo*

6 days at this dealer

Onyx BlackJet Black

Laura Buick GMC

Collinsville, IL

New 2026 GMC Sierra 3500

SLE

$78,449

MSRP: $79,4591.3% off

0 mi

Est. $1,131/mo*

8 days at this dealer

WhiteGray

Hendrick Buick GMC Cary

Cary, NC

New 2026 GMC Sierra 3500

SLE

$75,759

6 mi

Est. $1,093/mo*

10 days at this dealer

WhiteBlue

Bishop GMC of Clare

Clare, MI

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The median 2026 GMC Sierra 3500 SLE lists for $69,512 today.

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Factory Features

Standard equipment from the window sticker, reviewed for accuracy.

Comfort & Convenience

Keyless Open and Start; push-button start
Power windows and door locks
Cruise control
120-volt IP and bed outlets as HD SLE content
USB charge/data ports
Remote start, heated seats/wheel, Universal Home Remote, and power sliding rear window are SLE Convenience / SLT, not base SLE

Driver Assistance

Automatic Emergency Braking; Front Pedestrian Braking
Forward Collision Alert; Following Distance Indicator
Lane Departure Warning; IntelliBeam
HD Rear Vision Camera; Hitch Guidance
Electronic cruise control (Adaptive Cruise Control is a package, not SLE base)

Entertainment

13.4-inch Premium GMC Infotainment with Google built-in, multi-touch, AM/FM, voice assistance
Wireless Apple CarPlay and Android Auto
6-speaker audio; SiriusXM 360L trial; Bluetooth; Wi-Fi hotspot capable

Exterior

17-inch wheels with LT all-season tires on base gas SLE (20-inch is a package)
Chrome grille surround; animated LED projector headlamps; LED DRLs and taillamps
Heated power-adjustable trailering mirrors with convex glass and turn signals
Deep-tinted glass; body-color door handles
Standard tailgate; side bed step; cargo-area lamps; 12 cargo tie-downs
Black recovery hooks; MultiPro tailgate is available, not SLE base

Interior

Cloth seat trim; front 40/20/40 split-bench with lockable under-seat storage
4-way manual front seats on base SLE (10-way power driver is Convenience Package)
12.3-inch digital Driver Information Center
Leather-wrapped steering wheel; manual tilt column (power tilt/telescope is Convenience Package)
Single-zone climate on base SLE (dual-zone is Convenience Package) — MotorTrend: SLE is not fully loaded
Rubber/vinyl floor mats as SLE content; keyless open and start

Mechanical & Performance

6.6L gas V8 standard (401 hp @ 5,200 rpm / 464 lb-ft @ 4,000 rpm); Duramax 6.6L turbo-diesel optional
Allison 10-speed automatic
Rear-wheel drive standard; 4WD available
Automatic locking rear differential; Traction Select with Tow/Haul
4-wheel antilock disc brakes with DuraLife rotors
Trailering Package: hitch, 4- and 7-pin, Hitch Guidance; integrated trailer brake controller as HD SLE content
Push-button start; heavy-duty air filter

Safety & Security

Sierra HD Pro Safety: Forward Collision Alert, Following Distance Indicator, Front Pedestrian Braking, IntelliBeam, Lane Departure Warning, Automatic Emergency Braking, Buckle to Drive
6 airbags; Passenger Sensing System
HD Rear Vision Camera; TPMS with Tire Fill Alert
Teen Driver; Rear Seat Reminder (crew/double); OnStar capable

Warranty

3-year/36,000-mile Bumper-to-Bumper Limited Warranty
5-year/60,000-mile Powertrain Limited Warranty (Duramax 5-year/100,000-mile if equipped)
6-year/100,000-mile rust-through corrosion coverage
5-year/60,000-mile 24/7 Roadside Assistance and Courtesy Transportation