0.063309192657471
Used 2026 GMC Sierra for sale in Sidney
Good rated
4.8 - 11 reviews
39 photos
Accident Free
No reported accidents
Vehicle Details
Unknown
Automatic
4WD
Diesel
6-Cylinder Turbo
Unknown
Pickup
Owners
Make GMC
Model Sierra
Year 2026
Trim AT4
Series 1500
Engine Cylinders 6
Body Class Pickup
What was with this car history VIN 1GTUUEE82TZ348643?
Popular features
SiriusXM Trial Subscription
Apple CarPlay vehicle user interface is a product of Apple and its terms and privacy statements apply. Requires compatible iPhone and data plan rates apply. Apple CarPlay is a trademark of Apple Inc. Siri iPhone and Apple Music are trademarks for Apple Inc registered in the U.S. and other countries.
Vehicle user interface is a product of Google and its terms and privacy statements apply. To use Android Auto on your car display you'll need an Android phone running Android 6 or higher an active data plan and the Android Auto app. Google Android and Android Auto are trademarks of Google LLC.
May require additional optional equipment
Allow the driver to easily operate the audio system and phone interface controls
Customize and manage entertainment and vehicle feature setting
Use control and manage select smartphone apps through the Infotainment system
Voice-activated technology for phone
SiriusXM with 360L transforms your ride with our most extensive and personalized radio experience on the road that lets you enjoy ad-free music talk and news live sports comedy podcasts and more
Experience SiriusXM wherever you go in your vehicle and on the SiriusXM app with personalization features to make discovering your perfect entertainment easier than ever before
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
Provides added protection from sun and glare
Body-color door handles
Turn on automatically when sensors detect varying degrees of precipitation on the windshield
Grille (Black chrome grille insert bars with gloss black header and accents.)
17" full-size spare steel wheel with Black finish
C-shaped LED headlamps with signature lighting and innovative light blade technology
20" machined aluminum wheels with Carbon Grey Metallic accents
Provides light to find cargo in the bed
Rear pillar lamps
Perimeter Lighting
Helps keep spare tire secure
Utilizes the same key as the door and ignition
Help protect your truck's rear wheelhouse area from damage caused by dirt rocks mud road salt and the weather
Puddle lamps
Memory setting
Taillamps LED LED signature taillight with LED stop turn & reverse and Fade-on/Fade-off animation
Black mirror caps
Body-color front bumper
With switch in switch bank left of the steering wheel
Illuminates the cargo bed area
Six function tailgate designed to help improve loading unloading and accessing the cargo box
Hitch area lighting
17" 255/80R17SL all-season blackwall spare tire
Tailgate and bed rail protection caps
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
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
Does not include spray-on liner on tailgate due to Black composite inner panel
Includes logo on all trims except PRO
Help minimize glare in adverse driving conditions
20" 275/60R20SL all-terrain blackwall tires
Body-color rear bumper
Front and rear Black GMC emblems
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
Add a personalized feel to your vehicle's exterior
Requires exterior paint Sterling Metallic Summit White White Frost Tricoat or Onyx Black
Steps make it easier to get in and out of your truck
Textured step pads help provide secure footing
Black powder-coat finish
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
Summit White
Front bracket is included if displaying a front license plate is required in your state
13.4" diagonal multicolor reconfigurable Infotainment screen
Provides cabin comfort for rear occupants
With the press of a button the steering wheel quickly heats up to provide additional comfort on a cold day
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 trailer tire pressure monitor system is factory ordered and sensors are installed
Allows the driver to adjust the steering wheel up or down and the steering column forward or back
Use the driver memory to save and recall memory settings
Provides extra comfort when entering or exiting the vehicle
If no vehicle is detected in your path works like regular cruise control
You can always override the feature and take control
3-prong auxiliary household-style outlet
Located in the pickup bed
Steering column lock electrical
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
Recalls 2 driver presets for 10-way power seat and outside mirrors
Front passenger with express-up/down
Seat trim Perforated leather front
Located on the instrument panel
Makes it convenient for powering laptops phone chargers and other electronic devices
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
With the Keyless Entry fob in your possession conveniently locks and unlocks your car's doors without manually activating the key fob
With the vehicle in Park or Neutral press the brake pedal and then press the start/stop button to start the vehicle; the button will illuminate
Shift to Park and press the start/stop button to turn off the vehicle
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
Moves the seat forward and back and up and down
Tilt the seat cushion and seatbacks
Premium front floor liners with removable carpet insert
Includes driver personalization warning messages and vehicle information
Allows drivers to personalize vehicle features including warning messages and vehicle information
Front A-pillar mounted for Driver and Passenger
Rear B-pillar mounted
Includes center console
Driver with express-up/down
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
Uses induction technology for portable electronic devices
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
60/40 Full-length folding bench seat
Seatback storage on left and right side
Center fold out armrest with 2 cupholders
Underseat storage (full cab width)
Located in instrument cluster
Forward and back
Up and down
Tilt seat cushion back and upright
Recline seatback up and down
Includes 2-way power lumbar
Wrapped steering wheel
Utilizes a warming grid to help remove fog or frost from the rear window
Located in infotainment display
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
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
Seats can be programmed to automatically warm up when it's cold out
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
3-channel programmable
Conveniently activates compatible devices such as garage door openers security systems and home automation devices from inside your vehicle
The feature also allows brightness vertical tilt and zoom adjustments
Jet Black with Kalahari accents Perforated leather front seat trim
Cargo tie-downs (12)
Roll-formed high-strength steel
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
95 Amp-hr
Maintenance-free with rundown protection and retained accessory power
Thick construction helps to trap more dirt before it can enter the air intake
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
Help protect the front underbody oil pan differential case and 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 capability)- allows vehicle to roll freely
Integrated into rear bumper
Aluminized stainless-steel muffler and tailpipes
Brake pad wear indicator
When properly equipped; includes weight of vehicle passengers cargo and equipment
Push Button Start
When the differential senses a significant difference in wheel speed it locks to turn both rear wheels in unison for added traction
Electric rack-mounted with variable assist
Increases or decreases the amount of assist depending on the steering wheel angle
The system delivers great on-center precision and confident performance at higher speeds
Steering assist is greater during low-speed maneuvers such as parking
Aluminized stainless-steel muffler and tailpipe
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
Hydroformed front section
High-strength steel
Provides more ground clearance
Improved approach and departure angles
Four wheel drive
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
Emissions Federal requirements
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
Universal Home Remote
Rear sliding power window
AT4 Preferred Equipment Group includes standard equipment
AT4 Preferred Package
Off-Road High Clearance steps
Black nameplates
Bed View Camera on AT4
Option/package discount
Daytime Running Lamps automatically illuminate signature lighting
Can automatically provide hard emergency braking or enhance your hard braking
Works at speeds between 5 and 50 mph
Designed to help you maintain a safe following distance
Front row only
Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly
Includes 2 Trailer Camera Provisions
Requires Auxiliary Trailer Camera if one of the following camera views is desired: Transparent Trailer Rear Trailer View Picture-in-Picture or Inside Trailer View
System alerts do not occur if you're using your turn signal or it detects you may be intentionally leaving your lane
You may receive additional Lane Departure Warning alerts if needed
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 audible chimes and display a visual message within the driver display
Activates only once each time the vehicle is turned on and off and would require re-activation on a second trip
Limited nighttime and low visibility performance
In Reverse the view can be used to line up your hitch to your trailer
When driving the view can be used to check your trailer hitch
Shifting to Park automatically engages the Electric Parking Brake (if equipped)
Provides visual and audible alerts outside the vehicle when inflating an under inflated tire to the recommended tire pressure
Properly inflate tires to help optimize your vehicle's ride handling and efficiency
Can also provide a tailgating alert if you're following a vehicle much too closely
Includes trailer viewing software
These can help you park and avoid collisions
You can also switch to beeping crash avoidance alerts
Rear Seat Belt Indicator
Remote commands
Built-in voice assistance
Real-time traffic and navigation
Automatic Crash Response to help if you're in need
Helps remind the driver to buckle their seat belt before driving by preventing the vehicle from being shifted out of PARK temporarily when the driver's seat belt is not buckled
The feature also reminds the front passenger to buckle up if equipped
Can help you line up the hitch to your trailer
When driving lets you check the trailer using Rear Vision Camera view
Allows driver to see inside the cargo bed on the infotainment display to help with 5th wheel or gooseneck hitching and to check cargo
Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard braking
Technology Package
LPO Black Badging Package
AT4 Premium Package
Seller description
2026 GMC Sierra 1500 AT4 4WD with 3.0L Diesel - located in Sidney, MTThe 2026 GMC Sierra 1500 AT4 brings a refined blend of capability and comfort to Montana roads. Powered by a 6-cylinder 3.0L Duramax diesel, this four-wheel-drive pickup delivers strong low-end torque for towing and hauling while providing excellent highway fuel efficiency. The AT4 off-road-tuned suspension, skid plates, and all-terrain tires give confidence on gravel, ruts, and trailhead access, making it ideal for outdoor enthusiasts and worksite demands alike.Inside, the GMC Sierra AT4 balances rugged character with premium appointments: supportive seating, intuitive infotainment with smartphone integration, and driver-assistance features that enhance long drives and daily commutes. Practical cargo solutions and a durable bed liner help keep gear secure, while the available advanced trailering system simplifies hooking up trailers and monitoring loads.Safety systems include adaptive cruise, lane-keeping assist, blind-spot monitoring, and automatic emergency braking-helping protect passengers and improve situational awareness in changing conditions. The cabin's quiet refinement complements the diesel's smooth torque delivery, creating a comfortable experience on extended trips across eastern Montana or through winter weather.Located in Sidney, MT, this 2026 GMC Sierra 1500 AT4 4WD Diesel is ready for test drives and detailed inspections. Contact the lot to schedule a viewing and experience the truck's combination of diesel efficiency, off-road capability, and everyday practicality.
Gem City Motors
1,473 miles away from you!
Location: 701 S Central Avenue, Sidney, MT 59270
Phone: (140) 643-3312
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Estimated Ownership Cost
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Frequently Asked Questions About the 2026 GMC Sierra
The average price of a used 2026 GMC Sierra is $45,504 based on 69,504 listings currently available nationwide. Prices range from $7,999 to $91,340 depending on mileage, condition, and location. This particular Sierra in Sidney, MT is listed at $73,598.
Used 2026 GMC Sierra vehicles on our marketplace have an average of 49,486 miles. You can compare mileage across all available units on the GMC Sierra listings page.
Reliability varies by model year, maintenance history, and driving conditions. We recommend checking the vehicle history report and having an independent inspection before purchase.
The 2026 GMC Sierra runs on Diesel. Exact fuel economy figures vary by trim level and driving conditions. Check fueleconomy.gov for EPA estimates specific to this model year.
There are 695,065 used Pickup vehicles priced under $75,000 currently listed on our marketplace. Browse all options on the Used Pickup under $75,000 page. You can also narrow your search to Used GMC vehicles under $75,000 if you prefer to stay with the GMC brand.
