O'Neil GMC · Warminster, PA

2026 GMC Sierra 1500 SLT

21,620 miles · truck

1 / 30 photos

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2026

MakeGMC

ModelSierra 1500

TrimSLT

VIN1GTUUDED2TZ197858

Stock number99-054

Mileage21,620 miles

BodyPickup

Engine5.3L 8-cyl

Cylinders8

Displacement5.3L

TransmissionAutomatic

Drivetrain4WD

FuelGasoline

MPG15 city / 18 hwy

ExteriorOnyx Black

Towing9200

Vehicle description

Priced below KBB Fair Purchase Price! This 2026 GMC Sierra 1500 SLT in Onyx Black features: EcoTec3 5.3L V8 10-Speed Automatic 4WD CARFAX One-Owner. Clean CARFAX. Our model lineup is second to none! Make sure you swing in today to get an incredible deal on many new and used Buick and GMC models. These vehicles come packed full of features including a one-of-a-kind navigation system that will get you to any location efficiently and safely. Have kids and want to keep them entertained? Our Rear Seat DVD equipped vehicles will have them settled in for those long trips. The average family is getting larger and larger so make sure to check out our vehicles with the extra space with third row seating that can fit kids, dogs, adults, and more! Of course, when it gets chilly in those winter months, features like climate control and heated leather seating are exactly what your body needs for an early morning trip into work. Check out all of these features and more in our stock of vehicles. Other features include but are not limited to Power Moonroof, New Battery, New Tires, Non-Smoker Interior, Paddle Shifters, One Owner Carfax Certified, Premium Wheels, 30+ MPG, Premium Cloth Seating, New Brakes, Premium Sound System, Rear Bucket Seats, Remainder of Factory Warranty, Rear Back-Up Sensors, Remote Keyless Entry, Service Records Available, Steering Wheel Controls, Remote Start, Tow Package, Traction Control, XM Radio, USB Ports, and much more! Price excludes tax, tags, title, license, and dealer fees, additional rebates may apply. See our specials for more details.

Features & options (124)

Heated Steering Wheel
Remote Start
4WD/AWD
Android Auto
Apple CarPlay
Keyless Entry
Keyless Ignition System
Leather Seats
Wi-Fi Hotspot
Emergency Brake Assist
Forward Collision Warning
Navigation System
Rear View Camera
Satellite Radio
Tow Hitch/Tow Package
Entertainment System
Cruise Control
Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
Rear axle, 3.23 ratio (Not available with (NHT) Max Trailering Package.)
Pickup bed
Push Button Start
Automatic Stop/Start
Auto-locking rear differential
Transfer case, single speed, electronic Autotrac with push button control (4WD models only)
Suspension Package, Standard
Four wheel drive
Frame, fully-boxed, hydroformed front section
Trailer brake controller, integrated
Recovery hooks, front, frame-mounted, Black
Cargo tie downs (12), fixed
Steering, Electric Power Steering (EPS) assist, rack-and-pinion
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Brake lining wear indicator
Capless Fuel Fill
Exhaust, single outlet
Exhaust, aluminized stainless-steel muffler and tailpipe
Wheels, 18" x 8.5" (45.7 cm x 21.6 cm) 6-spoke machined aluminum with Dark Grey Metallic accents
Tires, 265/65R18SL all-season, blackwall
Tire, spare 265/70R17SL all-season, blackwall
Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
Wheelhouse liners, rear
Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
Bumper, front chrome lower
Bumper, rear chrome with bumper CornerSteps
CornerStep, rear bumper
Moldings, window surround, Chrome
Grille (Chrome header and chrome grille insert bars with gloss black accents.)
Headlamps, LED projectors with Fade-on/Fade-off animation, LED turn signals and Daytime Running Lamps
IntelliBeam, automatic high beam on/off (Included and only available with (PDI) GMC Pro Safety.)
Fog lamps, LED
Lighting, perimeter
Taillamps, LED LED signature taillight with LED stop, turn & reverse and Fade-on/Fade-off animation
Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
Mirror caps, chrome
Wipers, front rain-sensing
Glass, deep-tinted
Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
Tailgate, GMC MultiPro Tailgate with six functional load/access features
Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
Tailgate and bed rail protection caps, top
Door handles, chrome
SiriusXM Trial Subscription
Audio system feature, 6-speaker system
Bluetooth for phone, connectivity to vehicle infotainment system
Wireless, Apple CarPlay / Wireless Android Auto
Steering wheel audio controls
Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
Seat trim, Perforated leather-appointed front outboard
Seat adjuster, driver 10-way power including lumbar
Seat adjuster, passenger 10-way power including lumbar
Seating, heated driver and front outboard passenger
Driver memory recalls driver "presets" for power driver seat and outside mirrors
Floor covering, color-keyed carpeting
Floor mats, carpeted front (Deleted when (RIA) All-weather floor liner, LPO is ordered or (BKF) Premium Floor Liners are ordered.)
Floor mats, carpeted rear (Deleted when (RIA) All-weather floor liner, LPO is ordered or (BKF) Premium Floor Liners are ordered.)
Steering column, manual Tilt-Wheel and telescoping
Steering wheel, wrapped
Steering wheel, heated
Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
GMC Premium information Display- 13.4" diagonal Multicolor touch screen
Compass, located in instrument cluster
Exterior Temperature Display, located in radio display
Windows, power front, drivers express up/down
Window, power front, passenger express up/down
Windows, power rear, express down
Door locks, power
Keyless Open and Start includes remote keyless entry
Remote vehicle starter system
Cruise control, steering wheel-mounted
Theft-deterrent system, unauthorized entry
Steering column lock, electrical
USB Ports, 2, Charge/Data ports located on instrument panel
Power outlet, interior power outlet, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
USB ports, (2) charge-only, rear
Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) interior power outlet)
Air conditioning, dual-zone automatic climate control
Air vents, rear
Defogger, rear-window electric
Mirror, inside rearview auto-dimming
Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
Automatic Emergency Braking (Included and only available with (PDI) GMC Pro Safety.)
Front Pedestrian Braking (Included and only available with (PDI) GMC Pro Safety.)
Daytime Running Lamps, LED signature lighting
OnStar services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
Hitch Guidance
HD Rear Vision Camera (Removed with (UV2) HD Surround Vision.)
Following Distance Indicator (Included and only available with (PDI) GMC Pro Safety.)
Forward Collision Alert (Included and only available with (PDI) GMC Pro Safety.)
Lane Keep Assist with Lane Departure Warning (Included and only available with (PDI) GMC Pro Safety.)
Seat Belt Adjustable Guide Loops, front row only
Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
Rear Seat Reminder
Rear Seat Belt Indicator
DriveType: Four Wheel Drive
City: 15 MPG
Hwy: 18 MPG
Combined: 16 MPG
Fuel System: Direct Injection
Fuel Tank Capacity: 24 gal
Fuel Type: Gasoline Fuel
Horse Power: 355
Rear Wheel: Single
Trailering Capacity: 9200 lbs

Dealer-provided information may change. Confirm availability, price, vehicle condition, taxes and fees with the selling dealership.

AutosXchange Intel

Vehicle price analysis

Live listings · within 50 miles of Warminster, Pennsylvania

Asking price$46,860Dealer asking price · 21,620 mi

Market value$45,485Market value · based on 3 comparable cars

vs. market Fair price+3.0%Fair price · based on 3 comparable cars

Where this price sits

In the typical middle range · 33% of 3 similar listings ask more than this car.

Market value $45,485

This car$46,860

$41,999lowest$62,386highest

Middle 50% of asking pricesMarket valueThis car

Price vs. market value

−25%Market value+25%

Fair price$1,375 above the market value of $45,485

Price range

$41,999$62,386

3rd lowest price of 4 similar listings within 50 milesTick marks the market value · range of 3 similar listings

AutosXchange Insights

Compared with 3 used 2026 GMC Sierra 1500 SLT listings within 50 mi.
Priced $1,375 above the market value of 3 comparable cars — compare options, condition and history.
3rd lowest price of 4 similar listings within 50 miles.
Has about 4,000 more miles than similar listings.
About 21,620 miles per year of age (U.S. average is roughly 12,000–14,000).
Stock # 99-054 — mention it when you call or text.

How we calculate market value: comparable cars for sale now plus their last listed prices.

Price history

Price tracked by AutosXchange since Nov 5, 2026. No price change at this dealership since Nov 5 ($46,860).0 price changes at this dealership: $46,860 → $46,860.

Market activity: O'Neil GMC cut prices on 47 GMC Sierra 1500 by an average of $2,003

AutosXchange Intel Hub: Price changes for this model in Pennsylvania · This model in the Intel Hub · Market movers in Pennsylvania

Dealer-advertised asking prices as observed by AutosXchange (data as of Nov 11); earlier listings at other dealerships are shown by state only. Source: AutosXchange Intel Hub, autos-xchange.com/market.

Cars this price is compared to

Same 2026 Sierra 1500 SLT · used · any miles · within 50 miles of Warminster, Pennsylvania. All 3 comparable cars for sale, nearest first.

2026 GMC Sierra 1500 SLT for sale at Granite Run Buick GMC Inc. in Media, PA

Fair price

30 photos

2026 GMC Sierra 1500 SLT

$45,485est. $783/mo

$1,375 less than this car

17,407 mi
4WD
Automatic
Gasoline
Truck

Granite Run Buick GMC Inc. · Media, PA · 27 mi away

0 viewsStock # P5729

Check availability Call

34 photos

2026 GMC Sierra 1500 SLT

$62,386est. $1,074/mo

$15,526 more than this car

5,828 mi
4WD
Automatic
Gasoline
Truck

Barlow Buick GMC of Woodbury · Woodbury, NJ · 27 mi away

0 viewsStock # 345615

Check availability Call

26 photosCARFAX

2026 GMC Sierra 1500 SLT

$41,999est. $723/mo

$4,861 less than this car

38,775 mi
4WD
10-Speed Automatic
Gasoline
Truck

Bush Hyundai of Downingtown · Downingtown, PA · 37 mi away

0 viewsStock # PD215

Check availability Call

2026 GMC Sierra 1500 SLT17,407 miles · Granite Run Buick GMC Inc. · Media, PA · 27 mi away$45,485$1,375 less than this car

2026 GMC Sierra 1500 SLT5,828 miles · Barlow Buick GMC of Woodbury · Woodbury, NJ · 27 mi away$62,386$15,526 more than this car

2026 GMC Sierra 1500 SLT38,775 miles · Bush Hyundai of Downingtown · Downingtown, PA · 37 mi away$41,999$4,861 less than this car

AutosXchange Intel uses current dealer-advertised asking prices, not completed sales or appraisals. It compares the same trim and condition (new or used) where at least three are listed nationwide, and adjusts the expected price for mileage; it is not adjusted for options, condition or accident history. Similar listings are searched within 50, 100 and 250 miles of the dealer first, then the dealer's state, then nationwide. The left gauge spans ±25% of the expected price. How AutosXchange price analysis works