2020 GMC Sierra 1500 AT4

  • Used
  • Diesel
$38,999$39,925 Market Price
Value Your Trade
CASPER GMC CADILLAC
Location Details
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    The overview

    Exterior Color
    Satin Steel Metallic
    Interior Color
    Jet Black with Kalahari accents, Perforated leathe
    Odometer
    101,454 miles
    Fuel Economy
    16/21 MPG City/Hwy
    Transmission
    Automatic
    Drivetrain
    4WD
    Engine
    3.0L Duramax Turbo-Diesel I6 engine
    VIN
    1GTU9EET2LZ259449
    Stock Number
    G7108A
    • Show Me the CARFAX Badge
    • Max seating capacity: 5
    • Fuel System: Direct Injection
    • Fuel tank capacity: 24 gal
    • Horsepower: 355
    • Towing capacity: 9800 lbs
    • 4G LTE Wi-Fi® hotspot capable:
      • Terms and limitations apply. See onstar.com or dealer for details.
      • Terms and limitations apply. See onstar.com or dealer for details.
      • May require additional optional equipment
    • 6-speaker audio system:
      • Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
    • 8" diagonal Premium GMC Infotainment System with Navigation:
      • Multi-touch display, AM/FM/SiriusXM1 (trial subscription), stereo and includes Navigation2
      • HD Radio capability
      • Bluetooth®3streaming audio for music and select phones
      • Apple CarPlay™ capability for compatible phones4
      • Android Auto™ capability for compatible phones5
      • Use, control and manage select smartphone apps through the Infotainment system
      • Voice-activated technology for phone
      • USB port(s)6 to play stored audio files through your vehicle's audio system
      • With greater memory
      • May require additional optional equipment
    • Bluetooth®:
      • Pair your compatible mobile phone to your vehicle's infotainment system1
      • Place and receive hands-free phone calls
      • Store your phone's contact list in the system to place an outgoing call quickly using the touch-screen display or voice command system
      • With streaming audio capability, you can listen to files stored on your phone or Bluetooth digital media device
    • Bose® Premium Sound System:
      • 7-speakers with Richbass® woofer
      • Bose® is renowned for expert sound engineering and high-quality audio and with premium speakers positioned throughout the cabin, you'll get rich, concert-like sound
      • May require additional optional equipment
    • HD Radio:
      • Provides consumers with additional channels known as HD2, HD3 and HD4
      • Transmits Program Service Data, such as song titles and artist information
    • SiriusXM® with 360L trial subscription:
      • Enjoy a 3-month trial subscription to the SiriusXM All Access package and enjoy the full SiriusXM with 360L experience1
      • This vehicle is equipped with SiriusXM with 360L— a greater variety of SiriusXM content, a more personalized experience and easier navigation. For the full SiriusXM with 360L experience, a SiriusXM All Access Package is required. If you subscribe to a lower package, certain features of 360L will not be available
      • With the All Access Package, you can also enjoy your favorites anywhere life takes you, with the SiriusXM app, online and at home on compatible connected devices
      • May require additional optional equipment. Some features, including streaming content and listening recommendations require GM connected vehicle services
    • Steering-wheel mounted controls:
      • Allow the driver to easily operate the audio system and phone interface controls
      • May require additional optional equipment
    • 17" 255/80R17SL all-season, blackwall spare tire
    • 17" 265/70R17SL all-season, blackwall spare tire:
      • May require additional optional equipment
    • 17" full-size spare steel wheel with Black finish
    • 20" 275/60R20SL all-terrain, blackwall tires
    • 20" 6-spoke Carbon Grey painted aluminum wheels
    • 6" Black rectangular assist steps:
      • Wheel to wheel, provides easier access to the front of the truck bed closest to the cab
      • Steps make it easier to get in and out of your vehicle
      • Textured step pads help provide secure footing
      • Black powder-coat finish
    • Black mirror caps
    • Body-color door handles
    • Body-color front bumper
    • Body-color rear bumper
    • Cab-mounted cargo area lamps:
      • With switch in switch bank left of the steering wheel
      • Illuminates the cargo bed area
    • Cargo bed LED lighting:
      • Provides light to find cargo in the bed
      • Rear pillar lamps
      • May require additional optional equipment
    • CornerStep rear bumper:
      • Helps make it easier to get into and out of the pickup bed
      • Located at each end of the rear bumper
      • Textured step pads to help provide secure footing
    • Deep-tinted glass:
      • Provides added protection from sun and glare
    • GMC MultiPro Tailgate:
      • Six function tailgate design to help improve loading, unloading and access the cargo box
    • Heated, power, driver-side auto-dimming, power-folding outside mirrors:
      • Puddle lamps
      • Perimeter lighting
      • Memory setting
    • IntelliBeam:
      • Automatically turns on and off your vehicle's high beam headlamps according to surrounding traffic conditions
      • The automatic high beams will stay on until a sensor detects an approaching vehicle's headlamps or preceding vehicle's taillamps
      • May require additional optional equipment
    • LED fog lamps:
      • Help minimize glare in adverse driving conditions
    • LED reflector (high intensity) headlamps with LED turn signals and LED signature Daytime Running Lamps:
      • C-shaped LED headlamps with signature lighting and innovative light blade technology
    • LED signature tail lamps:
      • C-shaped LED taillamps with LED stop and reverse light
      • Brighter and lasts longer than traditional incandescent bulbs
    • MultiPro™ Audio System by Kicker:
      • A weatherproof audio package that fits the MultiPro™ exclusively. Bluetooth® sound streams from connected devices to the 2-channel, 100 watt, 50 watts RMS per-channel Tailgate Sound System. The illuminated display puts the user in charge of the programming track, volume and source
      • System operation that is completely independent of the interior audiosystem
      • Bluetooth®1 compatibility for wireless playback
      • 3.5mm and USB inputs for audio playbacks
      • A custom ABS baffle with full gasket sealing
      • A weatherproof amplifier hidden in the tailgate
      • May require additional optional equipment
    • Power sliding rear window with rear defogger:
      • Helps to keep your rear view clear of fog or frost
      • Utilizes a warming grid to remove fog or frost from the rear window
      • The window switch is conveniently located in the overhead console for easy 1-touch operation
      • May require additional optional equipment
    • Power sunroof:
      • Opens over the first row at the push of a button
      • Retracts into the roof
      • Offers tilt and slide features with express-open and -close
      • May require additional optional equipment
    • Rear wheelhouse liners:
      • Help protect your truck's rear wheelhouse area from damage caused by dirt, rocks, mud, road salt and the weather
      • May require additional optional equipment
    • Spare tire carrier lock:
      • Helps keep spare tire secure
      • Utilizes the same key as the door and ignition
    • Spray-on bedliner:
      • Provides a Black, textured, non-skid surface that helps protect the bed and minimizes cargo shifting
      • Covers the entire bed surface below side rails, front box top rail, gauge hole plugs and tie-downs
      • Chemically bonded, the sprayed-on liner permanently bonds to the truck bed, providing a watertight seal
      • Includes logo
      • Does not include spray-on liner on tailgate due to Black composite inner panel
    • Tailgate and bed rail protection caps
    • Tailgate with EZ Lift assist, power lock & release:
      • Hitch area lighting
      • May require additional optional equipment
    • 10-way power driver seat with power lumbar:
      • Moves the seat forward and back, and up and down
      • Tilt the seat cushion and seatbacks
    • 10-way power front passenger seat:
      • Forward and back
      • Up and down
      • Tilt seat cushion back and upright
      • Recline seatback up and down
      • Includes 2-way power lumbar
    • 12-volt auxiliary front power outlet:
      • May require additional optional equipment
    • 12-volt auxiliary rear power outlet:
      • May require additional optional equipment
    • 120-volt box-mounted power outlet:
      • 3-prong auxiliary household-style outlet
      • Located in the pickup bed
      • May require additional optional equipment
    • 120-volt power outlet:
      • 3-prong auxiliary household-style outlet
      • Located on the instrument panel
      • Makes it convenient for powering laptops, phone chargers and other electronic devices
      • May require additional optional equipment
    • 4.2" diagonal color Driver Information Center:
      • Includes driver personalization, warning messages and vehicle information
    • 8" diagonal, digital Driver Information Center:
      • Multiple page views may include fuel data, audio information, trailer settings, phone features, certain active safety features status (if equipped) and navigation1 route guidance
      • Includes driver personalization, warning messages and vehicle information
      • May require additional optional equipment
    • Adaptive Cruise Control - Camera:
      • Enhances regular Cruise Control by using camera technology to automatically adapt the vehicle speed to maintain your selected following gap time between your vehicle and any vehicles detected ahead while you steer, reducing the need for you to frequently brake and accelerate1
      • May require additional optional equipment
    • All-weather floor liners with AT4 logo:
      • Includes AT4 logo insert on 1st row liners
      • Feature a rugged, anti-slip pattern that traps debris and water while providing optimum carpet coverage
      • Provides coverage for first and second-row seating
    • Assist handles:
      • Front A-pillar mounted for Driver and Passenger
      • Rear B-pillar mounted
    • Brake pad wear indicator
    • Carpeted floor covering:
      • Color-keyed to match the interior
    • Console-Mounted Safe:
      • Lockable storage compartment located within center console
      • Protects and hides your valuables
    • Cruise control:
      • Maintains a selected speed while driving
      • Automatically disengages when the vehicle's traction control system needs to limit wheelspin on slippery surfaces or when the StabiliTrak® stability control system detects an oncoming skid
      • Set and resume speed functions
      • Steering-wheel mounted controls to easily maintain and manage cruising speed
    • Driver memory:
      • Recalls 2 driver presets for 10-way power seat and outside mirrors
      • May require additional optional equipment
    • Dual-zone automatic climate control:
      • Automatically maintains the selected temperatures for both the driver and front passenger
      • Allows individual climate settings for both driver and front passenger
      • Driver and front passenger can choose a temperature up to 30 degrees difference
      • May require additional optional equipment
    • Front bucket seats:
      • May require additional optional equipment
    • Front center console:
      • Includes reconfigurable feature with cupholders, cell phone storage, power cord management and file holder capacity
      • May require additional optional equipment
    • GMC Connected Access capable:
      • Subject to terms. See onstar.com or dealer for details.
      • May require additional optional equipment
    • Head-Up Display:
      • Projects vehicle information onto the windshield low in the driver's line of sight to help you keep your eyes on the road
      • Multi-color 15" Diagonal Head-Up Display
      • Can select key vehicle information to display including an off-road inclinometer
      • Adjustable vertical position and brightness of the display
      • May require additional optional equipment
    • Heated driver and front outboard passenger seats:
      • Separate buttons on the climate control panel allow you to choose from 3 levels of warmth
      • At the touch of a button you can warm the cushions and seatbacks with multilevel temperature control
      • Individually controlled
      • Seats can be programmed to automatically warm up when it's cold out
      • May require additional optional equipment
    • Heated rear outboard seats:
      • At the touch of a button you can warm the cushions and seatbacks
      • Provide comfort in cold weather for passengers in the rear outboard seating positions
      • Passengers have their own controls to set the perfect temperature
      • May require additional optional equipment
    • Heated steering wheel:
      • With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold day
      • May require additional optional equipment
    • In-vehicle Trailering App:
      • Checklist1
      • Trailer light sequencing
      • Trailer maintenance reminders
      • Trailer security alerts
      • Trailer mileage
      • Tow/haul reminder
      • Trailer electrical diagnostics
      • Includes trailer tire pressure monitoring alert ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed
      • May require additional optional equipment
    • Inside rearview auto-dimming mirror:
      • Automatically dims the inside rearview mirror when it senses bright light from behind
      • When headlamp glare is no longer detected, the mirror returns to its normal state
    • Instrumentation:
      • 6-gauge cluster
      • Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
    • Keyless Open and Start:
      • With the key fob in your possession, locks and unlocks your car's doors without having to use the key fob, increasing convenience
      • With the vehicle in Park or Neutral, press the brake pedal and then press the engine start/stop button to start the engine; the green indicator on the button will illuminate
      • Shift to Park and press the engine start/stop button to turn off the engine
      • May require additional optional equipment
    • Leather-wrapped steering wheel:
      • May require additional optional equipment
    • Manual tilt and telescoping steering column:
      • Allows the driver to adjust the steering wheel up or down, and the steering column forward or back
      • Provides extra comfort when entering or exiting the vehicle
      • May require additional optional equipment
    • Outside temperature display:
      • Located in infotainment display
    • Power door locks:
      • Programmable
      • Allows you to lock and unlock doors easily whether it's from the driver or front passenger seat or from outside using the key fob
    • Power windows:
      • Driver with express-up/down
      • May require additional optional equipment
    • Power windows:
      • Front passenger with express-up/down
      • May require additional optional equipment
    • Power windows with rear express-down:
      • May require additional optional equipment
    • Rear Camera Mirror:
      • Allows you to use either a traditional inside rearview mirror or a rearview camera mirror display that provides a wide, less obstructed view1
      • Assists when driving, changing lanes, and checking for vehicles and traffic conditions
      • May require additional optional equipment
    • Rear air vents:
      • Provides cabin comfort for rear occupants
    • Rear under-seat storage:
      • Accessory
      • Lockable storage lid
    • Rear window defogger:
      • Helps to keep your rear view clear of fog or frost
      • Utilizes a warming grid to help remove fog or frost from the rear window
    • Remote Start:
      • Start your vehicle remotely and step into a comfortably warmed or cooled vehicle, depending on the weather and your preset preferences
      • Locks doors and turns on parking lamps while the engine is running
      • Activates the climate control system
    • Steering column lock control:
      • Helps prevent theft by allowing the steering wheel to operate only with the proper key fob
      • May require additional optional equipment
    • Theft-deterrent unauthorized entry system:
      • Sounds the horn and flashes the turn signals when someone attempts to open the vehicle without the proper key or remote transmitter
      • Helps deter unauthorized entry, helping to protect your vehicle
      • May require additional optional equipment
    • USB ports:
      • 2 located on instrument panel1
    • USB ports:
      • Second row includes 2 USB charging-only ports1
    • Universal Home Remote:
      • 3-channel programmable
      • Conveniently activate compatible devices such as garage door openers, security systems, and home automation devices from inside your vehicle
      • May require additional optional equipment
    • Up-level rear seat with storage package:
      • Full-length bench seat
      • Seatback storage on left and right side
      • Center fold out armrest with 2 cupholders
      • Underseat storage (full cab width)
    • Ventilated driver and front passenger seats:
      • Separate buttons on the climate control panel allow you to choose from 3 levels of fan circulation
      • Individually controlled
      • Cooling feature includes both seatbacks and cushions
      • May require additional optional equipment
    • Wireless Charging:
      • Uses induction technology for portable electronic devices1
      • Convenient charging location at the front of the center console
      • Device may require optional case for phones that are compatible
      • Customers can charge their smartphones while they drive without connecting to any cables
      • May require additional optional equipment
    • 10-speed automatic transmission:
      • Electronically controlled transmission with overdrive and Driver Shift Control
      • Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
      • Powertrain Grade Braking
        • Automatically uses the engine and transmission to slow the truck to maintain desired speeds when driving downhill
        • Reduces brake wear and increases vehicle control
      • Cruise Grade Braking
        • Downshifts automatically to slow the truck as it drives downhill if it exceeds the cruise set speed by a certain amount
      • May require additional optional equipment
    • 170-amp alternator:
      • May require additional optional equipment
    • 2-speed Autotrac Transfer Case:
      • 2WD HI mode
        • Vehicle operates in 2-wheel drive
        • In this mode the transfer case & front driveline hardware are disengaged to improve fuel economy
        • Suitable for routine driving on all road surfaces
      • 4WD Auto mode
        • 4WD Auto enables the transfer-case to provide the performance benefits of a full time active AWD system
        • The 4WD Auto controls automatically adjust torque in response to parameters such as driver inputs, wheel slip control, vehicle dynamic state (understeer/oversteer)
        • Ideal for wet or wintry conditions, but can be used on any road surface. Suitable for light off road usage
      • 4WD HI mode
        • Transfer case engages front driveline and power is transferred to both the front & rear axles
        • In 4WD HI the transfer case clutch maintains higher preemptive torque levels for increased traction vs 4WD Auto
        • Suitable for use on slippery road surfaces or off-road conditions such as deep sand, snow or rough terrain
      • 4WD LO mode
        • In 4WD Low the transfer case clutch maintains a high preemptive coupling torque to maximize traction and improve wheel control when climbing or descending steep grades or obstacles
        • Suitable for off road usage, steep terrain, deep snow or sand
        • Ideal for off road driving to maximize low speed traction and increase control on steep grades
      • Neutral
        • ONLY used for towing vehicle (Dinghy tow & Dolly tow capability)- allows vehicle to roll freely
      • May require additional optional equipment
    • 220-amp alternator:
      • May require additional optional equipment
    • 3.0L Duramax Turbo-Diesel I6 engine:
      • 277 hp [206.6 kW] @ 3750 rpm
      • 460 lb-ft of torque [623.7 N-m] @ 1500 rpm)
      • Paired with a 10-speed automatic transmission
      • Includes diesel exhaust brake system
      • May require additional optional equipment
    • 3.23 rear axle ratio:
      • May require additional optional equipment
    • 4-wheel antilock disc brakes:
      • Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
      • Duralife brake rotors have better resistance to corrosion to increase rotor life, minimize brake pulsation, and improve aesthetic appearance
      • Brake system features a corrosion-fighting process called "Ferritic Nitro Carburizing" which can double rotor life expectancy and reduce or minimize rust
    • 7,100 lbs. GVWR:
      • When properly equipped; includes weight of vehicle, passengers, cargo and equipment
      • May require additional optional equipment
    • Aluminized stainless-steel muffler and tailpipe
    • Automatic Stop/Start:
      • At complete stops, when drivers keep their foot on the brake pedal, and under certain conditions, the engine shuts off
      • When drivers remove their foot from the brake, the engine automatically restarts
      • Under certain circumstances, the engine will not shut off at a complete stop
      • This feature can be disabled with a switch on the center stack
    • Automatic locking rear differential:
      • When the differential senses a significant difference in wheel speed, it locks to turn both rear wheels in unison for added traction
      • The Eaton® Locker senses a difference in wheel speed of approximately 100 rpm
      • May require additional optional equipment
    • Capless fuel fill:
      • Prevents paint scratches that can result from a tethered fuel cap
      • Creates a tight seal around the fuel-pump nozzle when the nozzle is fully inserted
    • Cargo tie-downs:
      • 12-fixed rated at 500 lbs. per corner
    • Dual-outlet exhaust:
      • Integrated into rear bumper
      • Premium exhaust outlets
      • Aluminized stainless-steel muffler and tailpipes
      • May require additional optional equipment
    • Electric Power Steering:
      • Increases or decreases the amount of assist depending on the steering wheel angle
      • Electric, rack-mounted with variable assist
      • The system delivers great on-center precision and confident performance at higher speeds
      • Steering assist is greater during low-speed maneuvers, such as parking
    • Engine block heater:
      • Helps ease cold weather starts
      • Heats the engine and engine block fluids
    • External auxiliary transmission oil cooler:
      • Heavy-duty air-to-oil cooler
      • Helps provides optimal transmission performance even when operating under a heavy load or towing a trailer
      • May require additional optional equipment
    • External engine oil cooler:
      • Heavy-duty air-to-oil cooler
      • Helps prevent possible engine oil breakdown under heavy loads
    • Fully boxed frame:
      • Hydroformed front section
      • High-strength steel
    • High-capacity air filter:
      • Thick construction helps to trap more dirt before it can enter the air intake
      • May require additional optional equipment
    • Hill Descent Control:
      • Uses antilock braking to help provide a smooth, controlled descent
      • Helps driver maintain control of the vehicle without depressing the brake pedal
      • Activates by pushing a button below the instrument panel
      • May require additional optional equipment
    • Integrated trailer brake controller:
      • Integrated with the antilock brake system (ABS)
      • Helps provide measured brake force signaling to electric-controlled trailer brake systems
      • Trailer gain and output are displayed in the Driver Information Center
    • Off-Road suspension with 2" factory lift:
      • Monotube Rancho® shocks
      • Provides more ground clearance
      • Improved approach and departure angles
      • May require additional optional equipment
    • Pickup bed:
      • Roll-formed high-strength steel
    • Red vertical recovery hooks
    • Skid plates:
      • Help protect the front underbody, oil pan, differential case and transfer case
      • May require additional optional equipment
    • AT4 CarbonPro Edition:
      • AT4 Preferred Package,
        • Universal Home Remote
        • Rear sliding window
        • 8" diagonal Premium GMC Infotainment with navigation1
        • Bose®2 Premium Audio System
        • Wireless charging3
      • Driver Alert Package I
        • Front and Rear Park Assist 4
        • Lane Change Alert with Side Blind Zone4
        • Rear Cross Traffic Alert4
      • 6" Black rectangular assist steps
      • LT275/65R18C MT blackwall Goodyear Wrangler DuraTrac tires
      • CarbonPro fender applique and CarbonPro (Carbon Fiber Composite) Bed
      • MultiPro™ Audio System by Kicker
      • May require additional optional equipment
    • AT4 Preferred Package:
      • Wireless Charging1
      • Universal Home Remote
      • 8" diagonal Premium GMC Infotainment with Navigation2
      • Bose®3 Premium Sound System with Richbass® woofer
      • Rear sliding power window
    • AT4 Premium Package:
      • AT4 Preferred Package
        • Universal Home Remote
        • Rear sliding power window
        • 8" diagonal Premium GMC Infotainment with Navigation1
        • Bose®2 Premium Audio System with Richbass® woofer
        • Wireless Charging3
      • Driver Alert Package I
        • Front and Rear Park Assist 4
        • Lane Change Alert with Side Blind Zone Alert4
        • Rear Cross Traffic Alert4
      • 6" Black rectangular assist steps (upgradeable to Off-Road assist steps)
    • Driver Alert Package I:
      • Lane Change Alert with Side Blind Zone Alert1
      • Rear Cross Traffic Alert1
      • Front and Rear Park Assist1
      • Perimeter Lighting
      • May require additional optional equipment
    • Driver Alert Package II:
      • Lane Keep Assist with Lane Departure Warning1
      • Automatic Emergency Braking1
      • Front Pedestrian Braking1
      • Forward Collision Alert1
      • Following Distance Indicator1
      • Adaptive Cruise Control - Camera1
      • Safety Alert Seat1
      • IntelliBeam®
      • May require additional optional equipment
    • Technology Package:
      • HD Surround Vision1 with Two Trailer View Camera Provisions
      • Rear Camera Mirror1
      • Multi-color 15" Diagonal Head-Up Display1
      • 8" Digital Driver Information Center on AT4
      • Bed View Camera1
      • May require additional optional equipment
    • Trailering Package:
      • Trailer Hitch1
      • Trailering hitch platform
      • Includes a 2" receiver hitch, 4-pin and 7-pin connectors
      • 7-wire electrical harness and 7-pin sealed connector for connecting your trailer's lights and brakes to your vehicle
      • Automatic locking rear differential
      • Hitch Guidance2
      • May require additional optional equipment
    • 6 airbags:
      • Dual-stage frontal airbags for driver and front outboard passenger1
      • Seat-mounted side-impact airbags for driver and front outboard passenger1
      • Head-curtain airbags for outboard seating positions1
      • Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or off1
    • Automatic Emergency Braking:
      • When traveling at speeds less than 50 MPH, the system can alert you if it detects that a front-end collision situation is imminent with a vehicle ahead you are following1
      • It can also help reduce the collision's severity by automatically applying hard, emergency braking if you have not already or by enhancing driver hard braking
      • The system may even help avoid the collision at very low speeds
      • May require additional optional equipment
    • Bed View Camera:
      • Camera in the Center High Mount Stop Lamp (CHMSL) provides an elevated view of the truck bed from the back of the cab1
      • Allows driver to see inside the cargo bed on the infotainment display to help with 5th wheel or gooseneck hitching and to check cargo
      • Includes 2 Trailer Camera Provisions
      • May require additional optional equipment
    • Following Distance Indicator:
      • Can provide you with the following gap time (or headway) to a moving vehicle you are detected to be following to help you know if you are following much too closely1
      • May require additional optional equipment
    • Forward Collision Alert:
      • Can alert you when it detects that a front-end collision is imminent with a vehicle that you are following1
      • It also can alert you if you are following a detected vehicle much too closely
      • May require additional optional equipment
    • Front and Rear Park Assist:
      • Can provide distance alerts to nearby detected objects to help you park and avoid objects at low speeds1
      • May require additional optional equipment
    • HD Rear Vision Camera:
      • When in Reverse at low speeds, provides you a high resolution view of the scene directly behind the vehicle on the Infotainment screen to help you park and avoid nearby objects1
      • Dynamic guidelines laid over the display image assist in parking maneuvers by showing the vehicle's path
      • Tailgate must be in the raised position for the Rear Vision Camera to operate properly
      • May require additional optional equipment
    • HD Surround Vision:
      • Provides you with a high resolution birds-eye view of the scene around the vehicle on the infotainment screen1
      • Helps the driver park and avoid nearby objects at low speeds
      • Additional views can be selected
      • Includes 2 Trailer Camera Provisions
      • Requires Auxiliary Trailer Camera if one of the following camera views is desired: Transparent Trailer, Rear Trailer View or Inside Trailer View
      • May require additional optional equipment
    • Hitch Guidance:
      • Uses the Rear Vision Camera display to provide you with a guideline to help align your vehicle with a trailer1
      • Provides a camera view to briefly check the trailer when driving
      • May require additional optional equipment
    • Hitch Guidance with Hitch View:
      • Uses the Rear Vision Camera display to provide you with a guideline to help align your vehicle with a trailer1
      • Additional camera zoomed-in view
      • When Hitch View is in use, automatically applies parking brake when shifting from Reverse to Park
      • Also provides a camera view to briefly check the trailer when driving
      • May require additional optional equipment
    • LED Daytime Running Lamps:
      • Daytime Running Lamps automatically illuminate signature lighting
    • Lane Change Alert with Side Blind Zone Alert:
      • Can help you avoid lane change crashes by providing side-mirror visual alerts when a moving vehicle is detected rapidly approaching or is in a side blind zone1
      • May require additional optional equipment
    • Lane Keep Assist with Lane Departure Warning:
      • Can help you avoid crashes due to unintentionally drifting out of your lane by providing gentle steering wheel turns when the system detects you are drifting out of your lane with no turn signal or steering activity1
      • Can also provide Lane Departure Warning alerts when a lane marker is crossed
      • May require additional optional equipment
    • OnStar® & GMC Connected Services capable:
      • Terms and limitations apply. See onstar.com or dealer for details.
    • Rear Cross Traffic Alert:
      • When in Reverse, can alert you to detected left- or right-cross traffic behind you (e.g., when backing out of a crowded parking space or driveway with side obstructions)1
      • Displays warning triangles with left/right indicator arrows in the Rear Vision Camera screen
      • System issues audible beeps or directional pulses if equipped with the Safety Alert Seat
      • May require additional optional equipment
    • Rear Seat Reminder:
      • Helps to remind the driver to check the back seat(s) before leaving the vehicle1
      • Activates when rear doors are opened and closed up to 10 minutes before or anytime while your vehicle is on
      • Under certain conditions, once the vehicle is switched off, designed to sound 5 audible chimes and display a visual message within the Driver Information Center
      • Activates only once each time the vehicle is turned on and off, and would require re-activation on a second trip
    • Safety Alert Seat:
      • Provides you the option of getting driver seat-bottom pulses instead of beeps for crash avoidance alerts1
      • May require additional optional equipment
    • Teen Driver:
      • This configurable feature lets you activate customizable vehicle settings associated with a key fob to help encourage better driving behavior1
      • It can limit certain vehicle features, and automatically turns on certain safety systems if vehicle is equipped1
      • An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver1
    • Tire Pressure Monitoring System:
      • Monitors the pressure in each tire and alerts you if there is a low-pressure condition in one or more of the tires1
      • Properly inflate tires to help optimize your vehicle's ride, handling and efficiency
      • Includes Tire Fill Alert1
    • Front Pedestrian Braking:
      • At speeds below 50 MPH, can alert you when a collision is detected to be imminent with a pedestrian directly ahead1
      • Can also help reduce the collision's severity or avoid the collision by automatically applying hard, emergency braking if you have not already, or by enhancing driver hard braking
      • Performance is limited at night
      • May require additional optional equipment
    • StabiliTrak, electronic stability control system with traction control:
      • Automatically helps enhance control, particularly during emergency maneuvers, by adjusting the brakes and engine torque to help you stay on your intended path
      • Activates when vehicle sensors detect a difference between the driver's intended path and the direction the vehicle is actually travelling
      • Includes Traction Control that detects wheel slippage and applies brake pressure and/or reduces engine power to help the driver maintain control when accelerating on wet or snow-covered roads
      • Includes Brake Assist that senses how hard and fast a driver hits the brake pedal and gives extra braking assistance, if required
      • Includes Trailer Sway Control
      • Hill Start Assist
    Vehicle Details
    Elevate your drive with this rugged 2020 GMC Sierra 1500 AT4 4WD, now available in Casper, WY. Powered by a robust 3.0L diesel 6-cylinder engine, this GMC Sierra delivers impressive torque, excellent highway fuel economy, and dependable towing capability perfect for work, play, and Wyoming's varied terrain. The AT4 off-road package adds enhanced suspension, skid plates, and all-terrain tires to tackle trails and backcountry routes with confidence. Step inside to find premium leather seats that provide comfort for long drives and a refined cabin experience. Modern tech features include Hands-Free Bluetooth for seamless phone and audio connectivity, Adaptive Cruise Control for relaxed highway driving, and Lane Departure Warning to help keep you safely on course. Practical utility and capability come standard with a strong towing setup and a versatile bed for gear, tools, or recreational equipment. This GMC Sierra 1500 AT4 is competitively priced and listed as the best price in the Casper area excellent value for a diesel-powered, off-road-capable pickup with premium amenities. Schedule a test drive in Casper, WY, and experience the blend of luxury, capability, and efficiency this 2020 GMC Sierra 1500 AT4 offers. Financing options available; contact us for details and to confirm availability.

    Equipment
    Never get into a cold vehicle again with the remote start feature on this unit. An off-road package is equipped on the GMC Sierra. Apple CarPlay: Seamless smartphone integration for this 1/2 ton pickup - stay connected and entertained on the go! The steering wheel audio controls on this model keep the volume and station within easy reach. Protect this model from unwanted accidents with a cutting edge backup camera system. Engulf yourself with the crystal clear sound of a BOSE sound system in this unit. This 1/2 ton pickup has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. This GMC Sierra is pure luxury with a heated steering wheel. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. This 1/2 ton pickup offers Android Auto for seamless smartphone integration. This model features a hands-free Bluetooth phone system.

    Packages
    AT4 CarbonPro Edition: AT4 Carbon Hard Badge; Gloss Black Dual Exhaust Tips; MulitPro Audio System by Kicker; Unique Grille Surround with Black Chrome Finish; CarbonPro (carbon Fiber Composite) Bed. Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Perimeter Lighting; Lane Change Alert with Side Blind Zone Alert. Driver Alert Package II: Forward Collision Alert; Lane Keep Assist with Lane Departure Warning; Front Pedestrian Braking; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Adaptive Cruise Control - Camera. AT4 Preferred Package: Premium Bose 7-Speaker Sound System; Power Sliding Rear Window with Rear Defogger; Wireless Charging; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation. AT4 Premium Package: 6" Rectangular Black Tubular Assist Steps. Technology Package: 8" Driver Information Center; HD Surround Vision with 2 Trailer View Camera Provisions; Multicolor 15" Diagonal Head-Up Display; High Gloss Black Mirror Caps; Bed View Camera; Rear Camera Mirror. Preferred Equipment Group 4SB: Hitch Guidance; 2 USB P

    Peace of mind

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    Vehicle history report

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    • Accident data (if applicable)
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    • Warranty status
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    A name you can trust

    CASPER GMC CADILLAC is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
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    KBB.com Consumer Reviews

    Kelley Blue Book Logo4out of 5 overall
    • 3.0

      Nice truck

      by froggy on Sunday, December 06, 2020

      I purchased this truck brand new and at 3900 miles I started to have a misfire. The warranty put a refurbished rebuilt engine in it. I was not aware that the warranty doesn't put new parts in just refurbished rebuilt parts. I traded in and lost my favorite blue truck. Not a fan of the whole process. Love the truck just not how the warranty went. I would not own another brand or model the 2020 is the nicest riding and looking. Just got a bad motor from the manufacture.…
    • 5.0

      Great Truck

      by Mel on Sunday, April 25, 2021

      I love it, I get compliments every where I go, and it apparently worth more than I paid for it brand new, a year and a half later. can't ask for much more than that.…
    • 5.0

      Well done GM

      by Tony on Thursday, November 26, 2020

      This truck has a 10 speed transmission that you can barely feel it shift. Traded in an F150 and test drove a similar equipped Ram. Although the Ram was nice, the styling of the GMC won me over, along with the tailgate! It also pulls my boat way better than the Ford, just smoother all around. The cabin is very quiet and the gas mileage is much better than V8 Ford. The cabin is super quiet and the ride is awesome. Love the adaptive cruise control too. The technology is fine and the screen is plenty big. Remember, you are driving this truck, not going to thr drive in! Most importantly, the controls are simple to use and Bose stereo sounds great! Oh, and I got it cheaper than the similar Ram too!…
    Based on 89 consumer ratings for 2019–2026 models. Privacy