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Roy's Auto Center · Eureka, CA

2020 GMC Sierra 3500 AT4

2020 GMC Sierra 3500 AT4 4WD Truck

83,887 miles · truck

PUBLISHED DEALER DETAILS

Complete vehicle specifications

Year2020
MakeGMC
ModelSierra 3500
TrimAT4
VIN
Stock number28526
Mileage83,887 miles
BodyPickup
Engine6.6L V8 turbo
Cylinders8
Displacement6.6L
Horsepower445
TransmissionAutomatic
Drivetrain4WD
FuelDiesel
ExteriorCarbon Black Metallic
InteriorJet Black w/Kalahari Accents

Vehicle description

The 2020 GMC Sierra 3500 AT4 4WD is a robust and capable heavy-duty truck designed to handle demanding tasks with ease. It is powered by a Duramax 6.6L Biodiesel Turbo V8 engine that delivers an impressive 445 horsepower and 910 ft-lbs of torque, providing strong towing and hauling capabilities. The exterior features a striking Carbon Black Metallic finish, complementing the rugged yet refined styling of the AT4 trim. Inside, the cabin offers Jet Black leather upholstery with Kalahari accents, creating a comfortable and upscale environment with durable materials suited for both work and daily driving. Standard factory features include a four-wheel-drive system for enhanced off-road capability, skid plates, and a two-speed transfer case. The AT4 trim also includes an off-road suspension with Rancho monotube shocks, a locking rear differential, and 18-inch wheels wrapped in all-terrain tires, ensuring confident handling in a variety of conditions. The interior is equipped with advanced technology and convenience features such as a touchscreen infotainment system with Apple CarPlay and Android Auto compatibility, Bluetooth connectivity, a premium Bose audio system, and multiple USB ports. Comfort is enhanced with heated and ventilated front seats, a heated steering wheel, dual-zone automatic climate control, moonroof, and ample storage options throughout the cabin. Safety is a priority with standard driver assistance features, including forward collision alert, lane departure warning, and rear parking sensors. The vehicle’s clean CARFAX report confirms it has been well-maintained and is free from accidents or damage. Roy's Auto Center is open 7 days a week. Give us a call at 707-443-7697 or stop by and take it for a test drive today!

Features & options (159)

  • Air filtration
  • Front air conditioning: automatic climate control
  • Front air conditioning zones: dual
  • Rear vents: second row
  • Airbag deactivation: occupant sensing passenger
  • Front airbags: dual
  • Side airbags: front
  • Side curtain airbags: front, rear
  • Antenna type: diversity, mast
  • Auxiliary audio input: Bluetooth, jack, memory card slot, USB
  • Radio: AM/FM, HD radio, touch screen display, voice operated
  • Radio data system
  • Satellite radio: SiriusXM
  • Speed sensitive volume control
  • Total speakers: 6
  • ABS: 4-wheel
  • Braking assist
  • Electronic brakeforce distribution
  • Electronic parking brake: auto off
  • Front brake type: ventilated disc
  • Power brakes
  • Rear brake type: ventilated disc
  • Armrests: rear center with cupholders, rear folding
  • Door trim: leather
  • Floor mat material: rubber/vinyl
  • Floor material: carpet
  • Floor mats: front, rear
  • Heated steering wheel
  • Steering wheel trim: leather
  • Assist handle: front, rear
  • Capless fuel filler system
  • Center console: front console with armrest and storage
  • Cruise control
  • Cupholders: front, rear
  • Easy entry: power driver seat
  • Memorized settings: 2 driver, driver seat, side mirrors
  • Multi-function remote: panic alarm, proximity entry system
  • One-touch windows: 4
  • Power outlet(s): 115V cargo area, 115V front, 12V front, 12V rear
  • Power steering: hydraulic variable assist, variable/speed-proportional
  • Power windows: lockout button
  • Push-button start
  • Reading lights: front, rear
  • Rearview mirror: auto-dimming
  • Remote engine start/cabin preconditioning
  • Steering wheel: tilt and telescopic
  • Steering wheel mounted controls: audio, cruise control, multi-function, phone, voice control
  • Storage: door pockets, front seatback, under rear seats
  • Vanity mirrors: dual illuminating
  • Bumper detail: rear integrated corner step
  • Door handle color: body-color
  • Exhaust tip color: stainless steel
  • Fender lip moldings: black
  • Front bumper color: body-color
  • Grille color: black, black surround
  • Hood scoop
  • Mirror color: black
  • Pickup bed light: LED
  • Pickup bed liner: spray-on
  • Rear bumper color: body-color
  • Skid plate(s): front, rear
  • Tailgate: lift assist, multi-function split-folding, power locking, removable
  • Window trim: black
  • Connected in-car apps: app marketplace integration
  • Infotainment: GMC Infotainment System
  • Infotainment screen size: 8 in.
  • Smartphone integration: Android Auto, Apple CarPlay
  • Clock
  • Compass
  • Digital odometer
  • External temperature display
  • Fuel economy display: MPG, range
  • Gauge: oil pressure, tachometer
  • Instrument cluster screen size: 4.2 in.
  • Multi-function display
  • Powertrain hour meter
  • Trip odometer
  • Warnings and reminders: coolant temperature warning, lamp failure, low battery, low fuel level, low oil pressure, maintenance due
  • Daytime running lights: LED
  • Exterior entry lights: approach lamps, puddle lamps
  • Front fog lights: LED
  • Headlights: auto delay off, auto on/off, LED, wiper activated
  • Taillights: LED
  • Side mirror adjustments: power, power folding, power telescoping, reverse gear tilt
  • Side mirrors: auto-dimming, heated, integrated turn signals
  • Towing mirrors
  • 4WD selector: electronic hi-lo
  • 4WD type: part time w/ on demand setting
  • Alternator: 170 amps
  • Auxiliary oil cooler
  • Auxiliary transmission fluid cooler
  • Battery: heavy duty, maintenance-free
  • Battery rating: 720 CCA
  • Battery saver
  • Locking differential: rear
  • Camera system: rearview
  • Check rear seat reminder
  • Child safety door locks
  • Child seat anchors: LATCH system
  • Programmable safety key
  • Rearview monitor: in dash
  • Emergency locking retractors: front
  • Front seatbelts: 3-point
  • Rear seatbelts: 3-point
  • Seatbelt pretensioners: front
  • Seatbelt warning sensor: front
  • Driver seat: heated, ventilated
  • Driver seat power adjustments: 10, height, lumbar, reclining
  • Front headrests: 2, adjustable
  • Front seat type: bucket
  • Passenger seat: heated, ventilated
  • Passenger seat power adjustments: 10, height, lumbar, reclining
  • Rear headrests: 3, adjustable
  • Rear seat: heated
  • Rear seat folding: folds up
  • Rear seat type: 60-40 split bench
  • Upholstery: leather-trimmed
  • Upholstery accents: perforated
  • Anti-theft system: alarm, vehicle immobilizer
  • Power door locks: anti-lockout, auto-locking
  • Hill holder control
  • Off-road driving assist: hill descent
  • Roll stability control
  • Stability control
  • Traction control
  • Trailer stability control
  • Front shock type: twin-tube gas
  • Front spring type: torsion bars
  • Front stabilizer bar: diameter 35 mm
  • Front suspension classification: independent
  • Front suspension type: upper and lower control arms
  • Rear shock type: twin-tube gas
  • Rear spring type: leaf
  • Rear suspension classification: solid live axle
  • Rear suspension type: multi-leaf
  • Tuned suspension: off-road
  • Driver assistance app: roadside assistance
  • Electronic messaging assistance: voice operated, with read function
  • Hands-free phone call integration: voice operated
  • Satellite communications: OnStar, voice guided directions
  • Smart device app compatibility: myGMC with Connected Access
  • Smart device app function: maintenance status
  • Wi-Fi: hotspot
  • Wireless data link: Bluetooth
  • Pickup bed cargo management: tie-down anchors
  • Tow hooks: front
  • Tow/Haul mode
  • Trailer brake controller
  • Trailer hitch
  • Trailer wiring: 4-pin, 7-pin
  • Spare tire mount location: underbody
  • Spare tire size: full-size
  • Spare wheel type: steel
  • Tire Pressure Monitoring System
  • Wheels: painted aluminum alloy
  • Front wipers: variable intermittent
  • Power windows: safety reverse
  • Tinted glass
  • Window defogger: rear

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

AutosXchange Intel

Vehicle price analysis

Live listings · nationwide
Asking price$50,995Dealer asking price · 83,887 mi
Market value$48,622Market value · based on 6 comparable cars
vs. market Fair price+4.9%Fair price · based on 6 comparable cars

Where this price sits

In the typical middle range · 33% of 6 similar listings ask more than this car.

$36,900lowest$56,061highest
Middle 50% of asking pricesMarket valueThis car

Price vs. market value

+4.9%
−25%Market value+25%
Fair price$2,373 above the market value of $48,622

Price range

$50,995
$36,900$56,061
5th lowest price of 7 similar listings nationwideTick marks the market value · range of 6 similar listings

AutosXchange Insights

  • Compared with 6 used 2020 GMC Sierra 3500 AT4 listings nationwide.
  • Priced $2,373 above the market value of 6 comparable cars — compare options, condition and history.
  • 5th lowest price of 7 similar listings nationwide.
  • Has about 11,000 fewer miles than similar listings.
  • About 11,984 miles per year of age (U.S. average is roughly 12,000–14,000).
  • Stock # 28526 — 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 8, 2026. No price change at this dealership since Nov 8 ($50,995).

$50.7k$50.8k$50.9k$51.0k$51.1k$51.2kNov 8Nov 9Nov 11Nov 12

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

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 3500 AT4 · used · any miles · nationwide. All 6 comparable cars for sale, nearest first.

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

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