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Map 243 Automotive Ave., Bozeman, MT Today 8:30-6pm (833) 441-4611
Home / Used 2021 Gmc Sierra Bozeman, Mt / Used 2021 Gmc Sierra At4 in Bozeman Mt

2021 GMC Sierra AT4 Diesel

VIN 1GT19PEY8MF139684
Mileage 88,594
Newest Arrival
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT

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If you'd like to learn more, call our sales team at (920) 325-1145 or use the tools below.

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2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
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2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
2021 GMC Sierra AT4 Bozeman MT
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AutoCheck
6.6 8 Cyl
Automatic
Jet Black w/Kalahari Accents Interior
Crew Cab
4WD

About This Vehicle

Equipment
The vehicle has a clean AutoCheck report, ensuring its impeccable vehicle history. Keep your hands warm all winter with a heated steering wheel in this vehicle . This GMC Sierra offers Android Auto for seamless smartphone integration. The installed navigation system will keep you on the right path. Protect this unit from unwanted accidents with a cutting edge backup camera system. Apple CarPlay: Seamless smartphone integration for the vehicle - stay connected and entertained on the go! This GMC Sierra features steering wheel audio controls. This GMC Sierra's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. Bluetooth technology is built into this vehicle, keeping your hands on the steering wheel and your focus on the road. Start this GMC Sierra from inside with remote start. This vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. This unit features a high end BOSE stereo system.

Packages
AT4 Premium Plus Package: Power Sunroof; LT275/65R20 AT BW Tires; 20" Machined Aluminum Wheels. Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Lane Change Alert with Side Blind Zone Alert; Perimeter Lighting. Driver Alert Package II: Forward Collision Alert; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Lane Departure Warning. Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Perforated Leather-Appointed Front Seat Trim; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Wireless Phone Projection; Floor-Mounted Centre Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2" Diagonal Colour Display Driver Info Centre; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Front Bucket Seats; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Box Bed Liner with AT4 Logo; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Windows with Driver Express Up/down; Heated and Ventilated Front Bucket Seats; Manual Tilt-Wheel/telescoping Steering Column; 2nd Row Dual USB Charge-Only Ports; Keyless Open and Start; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Power Door Locks. AT4 Preferred Package: HD Surround Vision; Bose Premium 7 Speaker Sound System; Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Bed View Camera with Two Trailer Camera Provisions; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation. Technology Package: 8" Diagonal Multicolour Driver Information Display; Multicolour 15" Diagonal Head-Up Display; Rear Camera Mirror. Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package; Bed View Camera with Two Trailer Camera Provisions. 20" Machined Aluminum Wheels. Power Sunroof. Black Sport Step. Rear Underseat Storage. Bed View Camera with Two Trailer Camera Provisions. LT275/65R20 AT BW Tires. High Idle Switch. Black Front and Rear Moulded Splash Guards. LED Smoked Amber Roof Marker Lamps. Trailer Tire Pressure Monitor Sensors. Heavy Duty Front Spring/camper Package. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**

Vehicle Specs

Stock:
726-558A
VIN:
1GT19PEY8MF139684
Dealer:
Billion Auto Group
Type:
Used
Year:
2021
Make:
GMC
Model:
Sierra
Mileage:
88,594
Dealer Certified:
No
Certified:
No
Date in Stock:
08/21/2026
Trim:
AT4
Model Number:
TK20743
Body:
Crew Cab
Body Style:
Crew Cab
Transmission:
Automatic
Transmission Description:
Automatic
Doors:
4
Cylinders:
8
Displacement:
6.6
Description:
V8, 6.6L
Drivetrain:
4WD
Fuel Type:
Diesel
Exterior Color:
Onyx Black
Interior Color:
Jet Black w/Kalahari Accents
All pricing and details are believed to be accurate, but we do not warrant or guarantee such accuracy. The prices shown above, may vary from region to region, as will incentives, and are subject to change. Vehicle information is based off standard equipment and may vary from vehicle to vehicle. Call or email for complete vehicle specific information.

Vehicle Information

Generic
  • 20" Machined Aluminum Wheels
  • 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
  • 6 USB ports
  • Aerial view camera
  • Apple CarPlay/Android Auto smart device wireless mirroring
  • AT4 Preferred Package: HD Surround Vision; Bose Premium 7 Speaker Sound System; Power Sliding Rear Window with Defogger; LED Smoked Amber Roof Marker Lamps; Wireless Charging; Bed View Camera with Two Trailer Camera Provisions; Universal Home Remote; Premium GMC Infotainment System Radio with Navigation
  • AT4 Premium Plus Package: Power Sunroof; LT275/65R20 AT BW Tires; 20" Machined Aluminum Wheels
  • AutoTrac part and full-time 4WD
  • Bed View Camera with Two Trailer Camera Provisions
  • Black Front and Rear Moulded Splash Guards
  • Black Sport Step
  • Blind spot warning
  • Bluetooth handsfree wireless device connectivity
  • Bluetooth wireless audio streaming
  • Bose speakers
  • Cruise control with steering wheel mounted controls
  • cushion tilt
  • Driver Alert Package I: Ultrasonic Front and Rear Park Assist; Rear Cross Traffic Alert; Lane Change Alert with Side Blind Zone Alert; Perimeter Lighting
  • Driver Alert Package II: Forward Collision Alert; Following Distance Indicator; Automatic Emergency Braking; Safety Alert Seat; IntelliBeam Automatic High Beam On/off; Lane Departure Warning
  • Driver seat power reclining
  • Dual-zone front climate control
  • First-row sliding and tilting glass sunroof with express open/close activation sunshade
  • Following Distance Indicator
  • fore/aft control and height adjustable control
  • Forward Collision Alert with Automatic Braking
  • Front mounted camera
  • Front wireless smart device charging
  • Gooseneck/5th Wheel Package: Gooseneck/5th Wheel Prep Package; Bed View Camera with Two Trailer Camera Provisions
  • Head-up display
  • Heated driver and front passenger seats
  • Heated rear seats
  • Heated steering wheel
  • Heavy Duty Front Spring/camper Package
  • High Idle Switch
  • Hitch View rear mounted camera
  • Immobilizer
  • Integrated navigation system with voice activation
  • IntelliBeam auto high-beam headlights
  • Internet radio capability
  • Keyfob remote start
  • Keyfob window control
  • Keyless Open/Keyless Start with hands-free access and push button start
  • Lane Departure Warning
  • Leather front seat upholstery
  • LED Smoked Amber Roof Marker Lamps
  • Left side camera
  • LT275/65R20 AT BW Tires
  • lumbar support
  • Pickup box camera
  • Power Sunroof
  • Predictive brake assist system
  • Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Perforated Leather-Appointed Front Seat Trim; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Wireless Phone Projection; Floor-Mounted Centre Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2" Diagonal Colour Display Driver Info Centre; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Front Bucket Seats; Premium Front Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Premium Rear Floor Liners with Removable Carpet Insert; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Box Bed Liner with AT4 Logo;
  • Premium GMC Infotainment System external memory control
  • Primary monitor touchscreen
  • Push-button
  • Rear Cross-Traffic Alert collision warning
  • Rear Underseat Storage
  • Right side camera
  • Technology Package: 8" Diagonal Multicolour Driver Information Display; Multicolour 15" Diagonal Head-Up Display; Rear Camera Mirror
  • Teen Driver restricted driving mode/alerts
  • Trailer brake controller
  • Trailer light malfunction warning
  • Trailer light test
  • Trailer sway control
  • Trailer theft alarm
  • Trailer tire pressure and temperature sensors
  • Trailer Tire Pressure Monitor Sensors
  • Vehicle and trailer reverse assist with visual graphic guidance only
  • Vehicle to trailer hitching assist
  • Ventilated driver and front passenger seats
  • Video-feed rearview mirror
Show more Show less

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Showroom

243 Automotive Ave., Bozeman, MT 59718
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Sales: (833) 441-4611 | Hours
Finance: (833) 441-4611 | Hours
Fleet: (833) 441-4611 | Hours

Service

243 Automotive Ave., Bozeman, MT 59718
Get Directions

Service: (833) 469-1243 | Hours
Parts: (833) 469-1243 | Hours
Body Shop: (406) 582-7700 | Hours
Executive Detail: (406) 585-8888 | Hours
Onsite Auto Glass and Accessories: (406) 581-6116 | Hours

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