Skip to Main Content

New 2025 GMC Sierra 1500 Pro
In-Transit
In-Transit

This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details.

VIN 3GTNUAED2SG238359 Stock # G238359

See Important Disclosures Here
Call (940) 580-4431

    Gallery

    Manufacturer Photos
    May not represent actual vehicle (options, colors, trim and body style may vary).
    close
    2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
      2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
        2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
          2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
            2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
              2025 GMC Sierra 1500 Vehicle Photo in GAINESVILLE, TX 76240-2013
                Current Offers Specifications
                • MSRP $48,175
                • Glenn Polk Price Contact Us
                • GPOLK DISCOUNT!! 1
                  2025 SIERRA DISCOUNT
                  - $6,000
                • Purchase Allowance 2
                  25-40ACB-2: Purchase Allowance
                  - $2,750 Take Retail Delivery By 03-03-2025
                • Bonus Cash 3
                  25-40AG-0: Bonus Cash
                  - $500 Take Retail Delivery By 03-03-2025
                Other Offers You May Qualify For
                • GM First Responder Offer4
                  25-17-1: GM First Responder Offer
                  - $500 Take Retail Delivery By 01-02-2026 - Not Compatible with Some Other Offers
                • GM Military Offer5
                  25-16-1: GM Military Offer
                  - $500 Take Retail Delivery By 01-02-2026 - Not Compatible with Some Other Offers
                • 0.9% APR for 36 Months and No Monthly Payments for 90 Days for Well-Qualified Buyers When Financed w/ GM Financial 6
                  25-32G-2: No Monthly Payments for 90 Days for Well-Qualified Buyers When Financed w/ GM Financial
                  Take Retail Delivery By 03-03-2025
                Click here for more offer information
                1Every customer qualifies for this discount. 2Not available with special financing, lease and some other offers. Must take new retail delivery by 03/03/2025. 3Not available with some other offers. Must take new retail delivery by 03/03/2025. 4Must be a current Firefighter, Police, EMT/Paramedic, or 911 Dispatcher. First Responders employed by federal, state or municipal governments may be subject to restrictions that limit their ability to accept this offer. Accordingly, this offer is void unless permitted by applicable federal, state and municipal laws, regulations, rules, ordinances, policies, codes of conduct, and other directives or standards regarding ethics and gift acceptance by the applicable federal, state or municipal employees. By accepting this offer, you verify that doing so complies with all laws, regulations, policies or other restrictions regarding ethics or gift acceptance that apply to you. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmfirstresponderappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2026. 5Eligible military personnel includes Active Duty members, Reservists, National Guard members, Veterans and Retirees of the U.S. Army, Navy, Air Force, Marine Corps and Coast Guard. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmmilitaryappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/02/2026. 6Deferred monthly payments for 90 days. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 0.9% APR for 36 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $28.16 for every $1000 you finance. Average example down payment is 6.4%. Not available with leases and some other offers. Must take new retail delivery by 03/03/2025.
                This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. unknown
                Specifications
                • Stock # G238359
                • VIN 3GTNUAED2SG238359
                • Exterior Sterling Metallic
                • Interior Jet Black Cloth Seat Trim
                • Engine 5.3L EcoTec3 V8 engine
                Price Watch Save Window Sticker
                VALUE YOUR TRADE-IN ASK US A QUESTION
                Print Email Share
                Angled overlay

                  Vehicle At A Glance

                  • Fuel Economy * 15 city / 19 hwy
                  • Mileage 4 MILES
                  • Transmission automatic
                  • Exterior Color Sterling Metallic
                  • Interior Color Jet Black Cloth Seat Trim
                  • Engine Data 5.3L EcoTec3 V8 engine
                    Angled overlay

                      Specifications

                      Exterior

                      • Chrome rear bumper, With integrated CornerSteps
                      • LED reflector (high intensity) headlamps with Fade-on/ Fade-off animation, LED turn signals and Daytime Running Lamps, C-shaped LED headlamps with signature lighting and innovative light blade technology
                      • Chrome front bumper
                      • 17" painted Silver wheels, Steel
                      • 17" 255/70R17 all-season, blackwall tires
                      • LED signature tail lamps with Fade-on/Fade-off animation, incandescent stop, turn and reverse light, C-shaped LED taillamps with LED stop and reverse light Help improve visibility in low-light conditions Brighter and lasts longer than traditional incandescent bulbs
                      • Heated power outside mirrors, Power adjustable, manual folding May require additional optional equipment
                      • IntelliBeam, At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions May require additional optional equipment
                      • Cab-mounted cargo area lamps, With switch in switch bank left of the steering wheel Illuminates the cargo bed area
                      • Black door handles
                      • 17" 255/70R17 all-season, blackwall spare tire
                      • 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
                      • Tailgate and bed rail protection caps
                      • Spare tire carrier lock, Helps keep spare tire secure Utilizes the same key as the door and ignition
                      • Standard tailgate
                      • Tailgate with EZ Lift assist, power lock & release, Hitch area lighting May require additional optional equipment
                      • Cargo bed LED lighting, Provides light to find cargo in the bed Rear pillar lamps
                      • Front license plate bracket, Front bracket is included if displaying a front license plate is required in your state
                      • Deep-tinted glass, Provides added protection from sun and glare

                        Interior

                        • Inside rearview manual day/night mirror, Adjust the tilt of the mirror to help reduce glare during nighttime driving
                        • Remote Keyless Entry, Allows you to lock and unlock doors of the vehicle with the key fob Driver's door or all doors unlock at the touch of a button Includes panic alarm button Includes remote locking tailgate May require additional optional equipment
                        • 4-way manual driver seat, Can be positioned forward or back and up or down
                        • Power windows, Front passenger with express down May require additional optional equipment
                        • 4-way manual front passenger seat, Can be positioned forward or back and up or down
                        • Instrumentation, Includes analog speedometer and tachometer 6-gauge cluster Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
                        • USB ports, (2) Data/charge ports located on instrument panelĀ¹
                        • 40/20/40 split-bench front seat with under-seat storage, Seating for up to 3 Driver and front passenger seatbacks recline Head restraints at the outboard seating positions Center seatback that doubles as a fold-down armrest with storage
                        • Rubberized vinyl floor covering, Provides good traction and convenient cleanup
                        • Assist handles, Front A-pillar mounted for Driver and Passenger Rear B-pillar mounted
                        • Power windows, Driver with express-up/down May require additional optional equipment
                        • Compass, Located in instrument cluster
                        • 3.5" diagonal monochromatic Driver Information Center
                        • 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
                        • 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 StabiliTrakĀ® stability control system detects an oncoming skid Set and resume speed functions Steering-wheel mounted controls to easily maintain and manage cruising speed
                        • Single-zone climate control, Maintains a selected temperature Manual
                        • Outside temperature display, Located in infotainment display
                        • Steering wheel
                        • Manual tilt steering column, Allows the steering wheel to be manually adjusted up or down Provides extra comfort when entering or exiting the vehicle Locking security feature
                        • 12-volt auxiliary front power outlet, May require additional optional equipment
                        • 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

                          Entertainment

                          • Wi-FiĀ® hotspot capable, Terms and limitations apply. See onstar.com or dealer for details. May require additional optional equipment
                          • Wireless Apple CarPlay/Wireless Android Auto capability for compatible phones, Can use Apple CarPlayĀ¹ and Android AutoĀ² wirelessly 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.
                          • BluetoothĀ®, Pair your compatible mobile phone to your vehicle's infotainment systemĀ¹ 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
                          • 2-speaker audio system, Includes 2 speakers placed in the front doors
                          • GMC Infotainment System with color touchscreen, Multi-touch display and AM/FM stereo 7" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settingsĀ¹ on Sierra 1SA BluetoothĀ®2 audio streaming for select devices Apple CarPlayā„¢ capability for compatible phonesĀ³ Android Autoā„¢ capability for compatible phonesā“

                            Mechanical

                            • Heavy-duty 730 cold-cranking amps battery, 80 Amp-hr Maintenance-free with rundown protection and retained accessory power May require additional optional equipment
                            • Black vertical recovery hooks, Two front frame-mountedĀ¹
                            • Cargo tie-downs (12)
                            • Single-speed Autotrac Transfer Case, 3 Transfer Case modes 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 Terrain mode 4WD HI and provides improved low speed traction and vehicle control during off road driving
                            • Standard Suspension Package
                            • Brake pad wear indicator
                            • 6,900 lbs. GVWR, When properly equipped; includes weight of vehicle, passengers, cargo and equipment
                            • 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
                            • Electric Power Steering, 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
                            • Push Button Start
                            • Single-outlet exhaust, May require additional optional equipment
                            • Aluminized stainless-steel muffler and tailpipe
                            • 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
                            • Fully boxed frame, Hydroformed front section High-strength steel
                            • 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
                            • Pickup bed, Roll-formed high-strength steel
                            • External engine oil cooler, Heavy-duty air-to-oil cooler Helps prevent possible engine oil breakdown under heavy loads
                            • 3.23 rear axle ratio, 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
                            • 5.3L EcoTec3 V8 engine, 355 hp [265 kW] @ 5600 rpm 383 lb-ft of torque [518 Nm] @ 4100 rpm Paired with a 10-speed automatic transmission May require additional optional equipment
                            • 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
                            • 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 EatonĀ® Locker senses a difference in wheel speed of approximately 100 rpm
                            • 170-amp alternator, May require additional optional equipment

                              Safety

                              • Lane Keep Assist with Lane Departure Warning, Uses a brief steering wheel turn to alert you when it detects you are unintentionally drifting out of your lane linesĀ¹ 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 May require additional optional equipment
                              • Tire Pressure Monitoring System with Tire Fill Alert, Monitors the pressure in each tire and alerts you if there is a low-pressure condition in one or more of the tiresĀ¹ 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
                              • 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
                              • LED Daytime Running Lamps, Daytime Running Lamps automatically illuminate signature lighting
                              • HD Rear Vision Camera, Shows high-resolution digital image of area directly behind your vehicle while in ReverseĀ¹ Can help you park or avoid vehicles and objects You can also display an overlay of where your vehicle is heading Tailgate must be in the raised position for the HD Rear Vision Camera to operate properly May require additional optional equipment
                              • Buckle to Drive, 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
                              • Automatic Emergency Braking, Can help you avoid or reduce the severity of a collision with a detected vehicle you're following using camera technologyĀ¹ Can automatically provide hard emergency braking or enhance your hard braking Works at speeds between 5 and 50 mph May require additional optional equipment
                              • Forward Collision Alert, Warns you if it detects a potential collision with a detected vehicle you're following so you can take actionĀ¹ Can also provide a tailgating alert if you're following a vehicle much too closely May require additional optional equipment
                              • 6 airbags, Dual-stage frontal airbags for driver and front outboard passengerĀ¹ Seat-mounted side-impact airbags for driver and front outboard passengerĀ¹ Head-curtain airbags for outboard seating positionsĀ¹ Includes front outboard Passenger Sensing System for frontal outboard passenger airbag and illuminates a status light that indicates whether the airbag is on or offĀ¹
                              • OnStarĀ® services capable, See onstar.com for details and limitations. Services vary by model. Service plan required.
                              • Following Distance Indicator, Displays the following time in seconds between your vehicle and a detected vehicle in front of youĀ¹ Designed to help you maintain a safe following distance May require additional optional equipment
                              • Front Pedestrian Braking, At speeds between 5 and 50 mph, can help you avoid or reduce the severity of a collision with a pedestrian it detects directly in front of youĀ¹ Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard braking Limited nighttime and low visibility performance May require additional optional equipment
                              • OnStar Basics, Drive confidently with core OnStar services includingĀ¹ Remote commands Built-in voice assistance Real-time traffic and navigation Automatic Crash Response
                              • Hitch Guidance, When in Reverse, displays a centered guideline on the Rear Vision Camera viewĀ¹ Can help you line up the hitch to your trailer When driving, lets you check the trailer using Rear Vision Camera view

                                Package

                                • GMC Pro Safety, Forward Collision AlertĀ¹ Following Distance IndicatorĀ¹ Front Pedestrian BrakingĀ¹ Lane Keep Assist with Lane Departure WarningĀ¹ Automatic Emergency BrakingĀ¹ Buckle to DriveĀ¹ IntelliBeamĀ¹ Safety Alert SeatĀ¹ on AT4, AT4X, Denali and Denali Ultimate Enhanced Automatic Emergency BrakingĀ¹ is standard on Denali and Denali UltimateĀ²
                                • Convenience Package, Remote Keyless Entry Rear-window defogger EZ Lift power lock and release tailgate Tinted glass LED cargo bed lighting Outside heated power-adjustable mirrors (Crew Cab and Double Cab models)
                                • Pro Value Package, Convenience Package Trailering Package
                                • Trailering Package, Trailer hitchĀ¹ 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 Hitch GuidanceĀ²

                                  Warranty

                                  • Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 Miles
                                  • Roadside Assistance: 5 Years/60,000 Miles, Sierra TurboMaxTM engines, 3.0L & 6.0L DuramaxĀ® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
                                  • Drivetrain: 5 Years/60,000 Miles, Sierra TurboMaxTM engines, 3.0L & 6.0L DuramaxĀ® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
                                  • Warranty: <<< Preliminary 2025 Warranty >>>
                                  • Basic: 3 Years/36,000 Miles
                                  • Maintenance: First Visit: 12 Months/12,000 Miles

                                    Options

                                    • Rear axle, 3.23 ratio
                                    • Transmission, 10-speed automatic, (Column shifter) electronically controlled
                                    • Auto-locking rear differential
                                    • Engine, 5.3L EcoTec3 V8
                                    • Wheels, 17" x 8" (43.2 cm x 20.3 cm) painted steel, Silver
                                    • Sterling Metallic
                                    • Emissions, Federal requirements
                                    • Pro Value Package
                                      Angled overlay

                                        Similar Vehicles

                                        Glenn Polk Price
                                        Contact Us
                                        MSRP
                                        $88,385
                                        Fuel Economy
                                        N/A city / N/A hwy
                                        Stock Number
                                        G195873
                                        Engine Data
                                        6.6L Duramax Turbo-Diesel V8 engine
                                        Exterior Color
                                        Sterling Metallic
                                        In-Transit
                                        In-Transit

                                        This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 12/22/24

                                        8 photos
                                          Glenn Polk Price
                                          Contact Us
                                          MSRP
                                          $88,385
                                          Fuel Economy
                                          N/A city / N/A hwy
                                          Stock Number
                                          G219561
                                          Engine Data
                                          6.6L Duramax Turbo-Diesel V8 engine
                                          Exterior Color
                                          Onyx Black
                                          In-Transit
                                          In-Transit

                                          This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/13/25

                                          8 photos
                                            Glenn Polk Price
                                            Contact Us
                                            MSRP
                                            $87,890
                                            Fuel Economy
                                            N/A city / N/A hwy
                                            Stock Number
                                            G219908
                                            Engine Data
                                            6.6L Duramax Turbo-Diesel V8 engine
                                            Exterior Color
                                            Summit White
                                            In-Transit
                                            In-Transit

                                            This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/13/25

                                            8 photos
                                              Glenn Polk Price
                                              Contact Us
                                              MSRP
                                              $66,985
                                              Fuel Economy
                                              15 city / 19 hwy
                                              Stock Number
                                              G201489
                                              Engine Data
                                              5.3L EcoTec3 V8 engine
                                              Exterior Color
                                              Sterling Metallic
                                              In-Transit
                                              In-Transit

                                              This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/21/25

                                              6 photos
                                                Glenn Polk Price
                                                Contact Us
                                                MSRP
                                                $96,175
                                                Fuel Economy
                                                N/A city / N/A hwy
                                                Stock Number
                                                G221917
                                                Engine Data
                                                6.6L Duramax Turbo-Diesel V8 engine
                                                Exterior Color
                                                Downpour Metallic
                                                In-Transit
                                                In-Transit

                                                This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/13/25

                                                8 photos
                                                  Glenn Polk Price
                                                  Contact Us
                                                  MSRP
                                                  $63,495
                                                  Fuel Economy
                                                  15 city / 19 hwy
                                                  Stock Number
                                                  G204591
                                                  Engine Data
                                                  5.3L EcoTec3 V8 engine
                                                  Exterior Color
                                                  Summit White
                                                  In-Transit
                                                  In-Transit

                                                  This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/07/25

                                                  6 photos
                                                    Glenn Polk Price
                                                    Contact Us
                                                    MSRP
                                                    $76,219
                                                    Fuel Economy
                                                    N/A city / N/A hwy
                                                    Stock Number
                                                    G223501
                                                    Engine Data
                                                    6.6L Duramax Turbo-Diesel V8 engine
                                                    Exterior Color
                                                    Thunderstorm Gray
                                                    In-Transit
                                                    In-Transit

                                                    This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/17/25

                                                    8 photos
                                                      Glenn Polk Price
                                                      Contact Us
                                                      MSRP
                                                      $96,175
                                                      Fuel Economy
                                                      N/A city / N/A hwy
                                                      Stock Number
                                                      G225898
                                                      Engine Data
                                                      6.6L Duramax Turbo-Diesel V8 engine
                                                      Exterior Color
                                                      Onyx Black
                                                      In-Transit
                                                      In-Transit

                                                      This vehicle has been shipped from the assembly plant and will arrive in the near future. Please contact us for more details. 02/20/25

                                                      8 photos
                                                        Angled overlay
                                                          All Vehicles *Manufacturer's Rebate subject to residency restrictions. Any customer not meeting the residency restrictions will receive a dealer discount in the same amount of the manufacturer's rebate. Tax, title, license and dealer fees (unless itemized above) are extra. Not available with special finance or lease offers. All Vehicles MPG estimates on this website are EPA estimates; your actual mileage may vary. For used vehicles, MPG estimates are EPA estimates for the vehicle when it was new. The EPA periodically modifies its MPG calculation methodology; all MPG estimates are based on the methodology in effect when the vehicles were new (please see the Ā“Fuel EconomyĀ” portion of the EPAĀ’s website for details, including a MPG recalculation tool). The features and options listed are for the new 2025 GMC Sierra 1500 and may not apply to this specific vehicle.