REAL DEALER INVENTORY · ONE PREMIUM MARKETPLACE
Sell My Car
← All vehicles
O'Neil GMC · Warminster, PA

2020 GMC Sierra 1500 SLT

85,637 miles · truck · Price dropped $165

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2020
MakeGMC
ModelSierra 1500
TrimSLT
Stock number99-053A
Mileage85,637 miles
BodyPickup
Engine5.3L 8-cyl
Cylinders8
Displacement5.3L
TransmissionAutomatic
Drivetrain4WD
FuelGasoline
MPG15 city / 20 hwy
ExteriorRed Quartz Tintcoat
InteriorJet Black, Perforated Leather-Appointed Front Seat Trim

Vehicle description

Priced below KBB Fair Purchase Price! This 2020 GMC Sierra 1500 SLT in Red Quartz Tintcoat features: EcoTec3 5.3L V8 10-Speed Automatic 4WD CARFAX One-Owner. Clean CARFAX.Odometer is 538 miles below market average!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 (108)

  • Adaptive Cruise Control
  • Heated Steering Wheel
  • 4WD/AWD
  • Heated Seats
  • Keyless Entry
  • Keyless Ignition System
  • Leather Seats
  • Wi-Fi Hotspot
  • Emergency Brake Assist
  • Blind Spot Monitor
  • Navigation System
  • Rear View Camera
  • Satellite Radio
  • Tow Hitch/Tow Package
  • Entertainment System
  • Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
  • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
  • Rear axle, 3.23 ratio (Not available with (NHT) Max Trailering Package.)
  • Pickup bed
  • Automatic Stop/Start
  • Differential, heavy-duty locking rear
  • Transfer case, single speed, electronic Autotrac with push button control (4WD models only)
  • Four wheel drive
  • Frame, fully-boxed, hydroformed front section
  • Trailer brake controller, integrated
  • Cargo tie downs (12), fixed, rated at 500 lbs per corner
  • Steering, Electric Power Steering (EPS) assist, rack-and-pinion
  • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
  • 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
  • Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
  • Wheelhouse liners, rear
  • Tire, spare 265/70R17SL all-season, blackwall
  • 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 surround with high gloss Black mesh and Chrome inserts.)
  • Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
  • Fog lamps, LED
  • Taillamps, LED signature taillight with LED stop and reverse light
  • Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
  • Mirror caps, chrome
  • 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 box 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
  • Radio, HD
  • Audio system feature, 6-speaker system
  • Bluetooth for phone connectivity to vehicle infotainment system
  • Steering wheel audio controls
  • 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • 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.)
  • Floor mats, carpeted rear (Deleted when (RIA) All-weather floor liner, LPO is ordered.)
  • Steering column, manual Tilt-Wheel and telescoping
  • Steering wheel, leather-wrapped
  • Steering wheel, heated
  • Driver Information Center, 4.2" diagonal color display includes driver personalization
  • Compass, located in instrument cluster
  • Exterior Temperature Display, located in radio display
  • Brake lining wear indicator
  • Windows, power front, drivers express up/down
  • Window, power front, passenger express up/down
  • Windows, power rear, express down
  • Door locks, power
  • Remote vehicle starter system
  • Keyless Open and Start
  • Cruise control, steering wheel-mounted
  • Theft-deterrent system, unauthorized entry
  • Steering column, lock control, electrical
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • Power outlet, front auxiliary, 12-volt
  • USB ports, dual, charge-only (2nd row)
  • Power outlet, rear auxiliary, 12-volt
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted 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
  • Daytime Running Lamps LED signature lighting
  • OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • Hitch Guidance with hitch view with Image adjustment, Pan/Zoom/Tilt
  • Hitch Guidance
  • HD Rear Vision Camera
  • Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire)
  • Rear Seat Reminder
  • DriveType: Four Wheel Drive
  • City: 15 MPG
  • Hwy: 20 MPG
  • Combined: 17 MPG
  • Fuel System: Direct Injection
  • Fuel Tank Capacity: 24 gal
  • Fuel Type: Gasoline Fuel
  • Horse Power: 355
  • Rear Wheel: Single

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$33,288Dealer asking price · 85,637 mi
Market value$29,367Market value · based on 5 comparable cars
vs. market High price+13.4%High price · based on 5 comparable cars

Where this price sits

In the typical middle range · 40% of 5 similar listings ask more than this car.

$27,495lowest$40,285highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

+13.4%
−25%Market value+25%
High price$3,921 above the market value of $29,367

Price range

$33,288
$27,495$40,285
4th lowest price of 6 similar listings within 50 milesTick marks the market value · range of 5 similar listings

AutosXchange Insights

  • Compared with 5 used 2020 GMC Sierra 1500 SLT listings within 50 mi.
  • Priced $3,921 above the market value of 5 comparable cars — compare options, condition and history.
  • 4th lowest price of 6 similar listings within 50 miles.
  • Has about 6,000 fewer miles than similar listings.
  • About 12,234 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # 99-053A — 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. 1 price change at this dealership: $33,453 → $33,288 (−$165).

$33.0k$33.1k$33.2k$33.3k$33.4k$33.5k$33.6k$33.7kNov 5Nov 6Nov 8Nov 9Nov 11Nov 12−$165 Nov 6

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 12); 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 2020 Sierra 1500 SLT · used · any miles · within 50 miles of Warminster, Pennsylvania. All 5 comparable cars for sale, nearest first.

More GMC Sierra 1500 near Warminster

All years and trims. Nearest first.