2021 GMC Sierra 1500 SLT
Specifications, live market data, colors, and factory features.
606 for sale right now
$18,299 – $54,995
Specifications
Performance
- Engine
- 5.3L 8-Cylinder L84 - DI, ALUM, GEN 5, VAR 2
- Transmission
- Automatic
- Drivetrain
- 4WD
Fuel & Efficiency
- Fuel
- Gasoline
Body & Practicality
- Body Style
- Truck
- Doors
- 4
Colors
Factory colors on 2021 GMC Sierra 1500 SLTs for sale now.
Exterior
- Summit White(white)54
- Onyx Black(black)40
- Satin Steel Metallic(gray)34
- Quicksilver Metallic(silver)28
- Pacific Blue Metallic(blue)21
- Cayenne Red Tintcoat(red)17
- Dark Sky Metallic14
- White Frost Tricoat(white)13
- White8
- Black6
Interior
- Jet Black(black)165
- Dark Walnut/Slate(brown)40
- Dark Walnut(brown)24
- Black19
- Dark Walnut/slate Perforated Leather Appointed Fro(brown)4
- Gray3
- Jet Black, Perforated Leather-Appointed Front Outboard Seat Trim(black)1
- Dark Walnut/Slate Hve(gray)1
- Dark Walnut/Slate, Perforated Leather-Appointed Front Outboard S(brown)1
- JET BLACK, PERFORATED LEATHER-APPOINTED FRONT OUTB(black)1
Live Market Data
Computed from active 2021 GMC Sierra 1500 SLT listings nationwide, updated continuously.
For sale now606
Median price$35,160
Average price$35,192
Price range$18,299 – $54,995
Avg. days on market45
Avg. mileage85,676 mi
New / Used0 / 500
Price Distribution
Price vs. Mileage
Latest SLT Listings
The newest 2021 GMC Sierra 1500 SLTs on the market.
View Used 2021 GMC Sierra 1500 listing
116,801 mi
Used 2021 GMC Sierra 1500
SLT
$32,775
Est. $480/mo*
1 day on market
BlueBrown
Steven Nissan
Harrisonburg, VA
View Used 2021 GMC Sierra 1500 listing
44,104 mi
Used 2021 GMC Sierra 1500
SLT
$38,354
Est. $560/mo*
1 day on market
GrayBrown
Huston Chevrolet
Avon Park, FL
View Used 2021 GMC Sierra 1500 listing
88,034 mi
Used 2021 GMC Sierra 1500
SLT
$36,159
Est. $529/mo*
1 day on market
BlueBlack
Vern Laures Chevrolet
New Hampton, IA
View Used 2021 GMC Sierra 1500 listing
38,728 mi
Used 2021 GMC Sierra 1500
SLT
$43,894
Est. $639/mo*
1 day on market
WhiteGray
Healey Ford
Goshen, NY
View Used 2021 GMC Sierra 1500 listing
111,211 mi
Used 2021 GMC Sierra 1500
SLT
$28,994
Est. $427/mo*
1 day on market
GrayBlack
My Ride
Fredericksburg, VA
View Used 2021 GMC Sierra 1500 listing
88,769 mi
Used 2021 GMC Sierra 1500
SLT
$36,000
Est. $526/mo*
1 day on market
WhiteBlack
Creekwood Motor Company
Searcy, AR
View Used 2021 GMC Sierra 1500 listing
91,966 mi
Used 2021 GMC Sierra 1500
SLT
$32,277
Est. $473/mo*
1 day on market
RedBlack
Cummins Ford Lincoln, Inc.
Weatherford, OK
View Used 2021 GMC Sierra 1500 listing
100,452 mi
Used 2021 GMC Sierra 1500
SLT
$37,641
Est. $550/mo*
1 day on market
GrayGray
Woody Folsom Nissan of Baxley
Baxley, GA
What's Yours
Worth?
The median 2021 GMC Sierra 1500 SLT lists for $35,160 today.
Check My Car's ValuePowered by live market data
Sell Your
GMC Sierra 1500 SLT
Get a competitive offer for your Sierra 1500— we'll come pick it up.
StartGet your offer · Schedule pickup · Get paid on the spot
Save on
Auto Insurance
with
Get a Quote Now!Powered by TheZebra
Factory Features
Standard equipment from the window sticker, reviewed for accuracy.
Comfort & Convenience
- Keyless Open and Start
- Remote vehicle starter system
- Power door locks
- Power windows: driver and front passenger express up/down; rear express down
- Cruise control (steering-wheel-mounted)
- 12-volt front auxiliary power outlet
- 12-volt rear auxiliary power outlet
- 120-volt instrument-panel power outlet
- 120-volt bed-mounted power outlet
- Dual charge-only USB ports
Driver Assistance
- HD Rear Vision Camera
- Hitch Guidance
- Hitch Guidance with Hitch View (image adjustment, pan/zoom/tilt)
- In-vehicle Trailering App (checklist, maintenance reminders, security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics)
Entertainment
- Premium GMC Infotainment System with 8" diagonal multi-touch color display
- AM/FM stereo with Bluetooth streaming audio
- Wireless Apple CarPlay and wireless Android Auto phone projection
- Advanced voice recognition, in-vehicle apps, and personalized infotainment/vehicle profiles
- 6-speaker audio system
- SiriusXM with 360L (All Access trial subscription)
- HD Radio
- Bluetooth phone connectivity
- 4G LTE Wi-Fi hotspot capable
- Steering-wheel audio controls
Exterior
- GMC MultiPro six-function tailgate
- EZ Lift power lock and release tailgate function with hitch-area light
- Tailgate and bed-rail protection caps (top)
- LED reflector headlamps with LED turn signals and LED signature daytime running lamps
- LED signature taillamps with LED stop and reverse lights
- LED fog lamps
- LED cargo-area lighting (bed), switch- or key-fob-activated
- Cab-mounted cargo-area lamps integrated with CHMSL
- Chrome door handles
- Chrome mirror caps
- Chrome window-surround moldings
- Chrome front bumper (lower) and chrome rear bumper with CornerStep
- Deep-tinted glass
- Outside heated power-adjustable, power-folding mirrors with driver-side auto-dimming, puddle lamps, side perimeter lighting, and memory
- 18" x 8.5" 6-spoke machined aluminum wheels with Dark Gray Metallic accents (standard SLT wheel)
- 265/65R18SL all-season blackwall tires (with standard 18" wheels)
- Full-size spare: 17" x 8" steel spare wheel with spare tire and keyed tire-carrier lock
- Rear wheelhouse liners
Interior
- Perforated leather-appointed front outboard seating surfaces
- Front 40/20/40 split-bench seat with covered armrest storage and under-seat storage (standard seating; buckets are package)
- Heated driver and front outboard passenger seats
- 10-way power driver seat including power lumbar
- 10-way power front passenger seat including power lumbar
- Driver memory (power driver seat and outside mirrors)
- Up-level rear seat with storage package: 60/40 folding rear bench with seatback storage, center fold-down armrest with cupholders, and under-seat storage (Crew Cab)
- Second-row seatback storage
- Second-row air vents
- Leather-wrapped steering wheel
- Heated steering wheel
- Manual tilt and telescoping steering column
- Steering-column electric lock control
- Dual-zone automatic climate control
- Rear-window electric defogger
- Auto-dimming inside rearview mirror
- Color-keyed carpeting
- Carpeted front and rear floor mats
- 6-gauge instrument cluster (speedometer, fuel, engine temperature, tachometer, voltage, oil pressure)
- 4.2" diagonal color Driver Information Center with driver personalization
- Compass (instrument cluster)
- Exterior temperature display (radio display)
- Front A-pillar and rear B-pillar assist handles
Mechanical & Performance
- EcoTec3 5.3L V8 with Dynamic Fuel Management (355 hp)
- 8-speed automatic transmission on 2WD models; 10-speed automatic transmission on 4WD models (per 2021 GMC Sierra brochure)
- Automatic Stop/Start
- 4-wheel antilock disc brakes with Duralife rotors
- Electric power steering (rack-and-pinion)
- Auto-locking rear differential
- External engine oil cooler
- Auxiliary external transmission oil cooler
- Heavy-duty 730 cold-cranking-amp / 80 Amp-hr battery with rundown protection and retained accessory power
- 170-amp alternator
- Capless fuel fill
- Fully boxed frame with hydroformed front section
- Aluminized stainless-steel muffler and tailpipe; single-outlet exhaust
- Fixed cargo tie-downs (rated 500 lbs per corner)
- Pickup bed
- StabiliTrak electronic stability control with Proactive Roll Avoidance and traction control
- Electronic trailer sway control
- Hill start assist
- Traction Select system with Tow/Haul mode
- Trailering Package (trailer hitch, 7-pin and 4-pin connectors, Hitch Guidance)
- ProGrade Trailering System (Hitch Guidance with Hitch View and in-vehicle Trailering App)
- Integrated trailer brake controller
- Four-wheel drive with single-speed electronic Autotrac transfer case (4WD models)
- Front frame-mounted recovery hooks (4WD models)
- GVWR and rear axle ratio as specified by configuration (e.g., 3.23 available/common on SLT)
Safety & Security
- Dual-stage frontal airbags for driver and front outboard passenger
- Seat-mounted side-impact airbags for driver and front outboard passenger
- Head-curtain airbags for front and rear outboard seating positions
- Front outboard Passenger Sensing System for frontal passenger airbag
- Tire Pressure Monitoring System with Tire Fill Alert
- Rear Seat Reminder
- Teen Driver configurable feature
- Theft-deterrent system (unauthorized entry)
- OnStar and GMC connected services capable
- GMC Connected Access capable
- Brake lining wear indicator
Warranty
- Basic limited warranty: 3 years / 36,000 miles
- Powertrain limited warranty: 5 years / 60,000 miles
- Roadside assistance: 5 years / 60,000 miles
- Corrosion coverage: 3 years / 36,000 miles (surface corrosion); rust-through perforation coverage per GM limited-warranty terms