Recent Arrival!
2026 White Sands GMC Sierra 3500HD Pro Double Cab 4WD 10-Speed Automatic 6.6L V8
10-Speed Automatic, 4WD, Jet Black Vinyl.
For us, customer service means making your car buying experience as easy and enjoyable as possible.
New 2026 GMCSierra 3500 HD Pro DRW
- Exterior Color
 - Coastal Dune
 - Interior Color
 - Jet Black, Cloth seat trim
 - Transmission
 - Automatic
 - Drivetrain
 - 4WD
 
- Engine
 - 6.6L V8 Gas engine
 - VIN
 - 1GT5USE73TF128388
 - Stock Number
 - GT8388
 
GMC
Sierra 3500 HD
Included Packages & Accessories
Detailed Specifications
- Basic: 3 Years/36,000 Miles
 - Corrosion: 3 Years/36,000 Miles, Rust-Through, 6 Years/100,000 Miles
 - Drivetrain: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
 - Maintenance: First Visit: 12 Months/12,000 Miles
 - Roadside Assistance: 5 Years/60,000 Miles, 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
 - Warranty: <<< Preliminary 2026 Warranty >>>
 
- Max seating capacity: 6
 
- Fuel System: Direct Injection
 - Fuel tank capacity: 36 gal
 - Horsepower: 401
 
- Towing capacity: 18000 lbs
 
- 6-speaker audio system: 
- Speakers are positioned throughout the cabin for outstanding sound quality and an enjoyable listening experience
 
 - 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
 
 - GMC Infotainment System with color touchscreen: 
- 7" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on Pro 1SA
 - 8" diagonal color touchscreen for customizing and managing entertainment and vehicle feature settings1 on SLE and Elevation
 - Bluetooth®2 audio streaming for select devices
 - Apple CarPlay™ capability for compatible phones3
 - Android Auto™ capability for compatible phones4
 
 - Wi-Fi® Hotspot capable: 
- Terms and limitations apply. See onstar.com or dealer for details.
 - May require additional optional equipment
 
 - Wireless phone projection: 
- For Apple CarPlay™1 and Android Auto™2
 
 
- 17" LT235/80R17E all-terrain, blackwall spare tire
 - 17" LT235/80R17E all-terrain, blackwall tires: 
- May require additional optional equipment
 
 - 17" painted steel wheels
 - Animated LED Signature Tail lamps with Stop, turn and Reverse lamps
 - Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
 - Black beltline moldings
 - Black door handles
 - Cargo bed LED lighting: 
- Provides light to find cargo in the bed
 - May require additional optional equipment
 
 - Cargo tie-downs: 
- 12-fixed rated at 500 lbs. per corner
 
 - Chrome front bumper: 
- May require additional optional equipment
 
 - Chrome rear bumper: 
- With integrated CornerSteps
 - 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
 
 - Front license plate bracket: 
- Front bracket is included if displaying a front license plate is required in your state
 
 - IntelliBeam: 
- At speeds above 25 mph, can automatically turn vehicle's high beams on and off according to surrounding traffic conditions
 
 - Locking tailgate
 - Painted center caps
 - Side Bed Step: 
- Black textured step pads help provide secure footing
 - Integrated on forward portion of outer bed on driver and passenger side to provide ease of access to forward portion of the bed
 
 - Smoked Amber LED roof marker lamps: 
- Roof-mounted lamps near the front of the cab
 
 - Solar-absorbing glass: 
- Helps minimize the amount of solar rays entering the vehicle cabin
 
 - Spare tire carrier lock: 
- Helps keep spare tire secure
 
 - Standard tailgate
 - Tailgate and bed rail protection caps
 - Tailgate with EZ Lift assist, power lock & release: 
- Hitch area lighting
 - May require additional optional equipment
 
 
- 12-volt auxiliary front 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
 
 - 3.5" diagonal monochromatic Driver Information Center
 - 4-way manual driver seat
 - 4-way manual front passenger seat
 - 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
 
 - 60/40 split-folding rear bench seat: 
- Includes child seat top tether anchor
 - Can fold one or both sides up
 
 - Assist handles: 
- Front A-pillar mounted for Driver and Passenger
 - Rear B-pillar mounted
 
 - Compass: 
- Located in instrument cluster
 
 - 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
 
 - Instrumentation: 
- 6-gauge cluster
 - Speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
 
 - 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
 
 - Outside temperature display: 
- Located in infotainment display
 
 - Power door locks: 
- 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 (when equipped)
 
 - Power windows with driver express-up/down: 
- Quickly raises the window or lowers it with the touch of a button
 - If an obstruction is detected, the anti-pinch feature will auto-reverse
 
 - Power windows with front passenger express-down: 
- Quickly lowers the window with the touch of a button
 - If an obstruction is detected, the anti-pinch feature will auto-reverse
 
 - Power windows with rear express-down
 - Rear air vents: 
- Provides cabin comfort for rear occupants
 
 - Rear window defogger: 
- Utilizes a warming grid to help remove fog or frost from the rear window
 
 - Rearview mirror with partial video display: 
- Auto dimming with partial video display in rearview mirror
 - Includes a bed camera1 to view cargo bed
 - May require additional optional equipment
 
 - 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
 
 - Rubberized vinyl floor covering: 
- Provides good traction and convenient cleanup
 
 - Single-zone manual climate control: 
- Maintains a selected temperature
 
 - Steering wheel
 - USB ports: 
- (2) Data/charge ports located on instrument panel1
 
 
- 10-speed automatic transmission: 
- Tow/Haul mode reduces shift cycling for better control and improved cooling when towing or hauling heavy loads
 - Electronically controlled with overdrive
 - Auto Grade Braking that automatically downshifts when needed to enable engine braking, helping to slow the vehicle on downhill grades and reduce brake wear (operates in Tow/Haul mode)
 
 - 14,000 lbs. GVWR: 
- When properly equipped; includes weight of vehicle, passengers, cargo and equipment
 
 - 3.73 rear axle ratio: 
- Requires a gas engine
 
 - 4-wheel antilock disc brakes: 
- Help reduce wheel lockup and maintain steering control during hard braking on most slippery surfaces
 - DuraLife™ brake rotors feature a hardened surface to reduce corrosion and provide quieter braking with less vibration. DuraLife™ rotors are hardened and strengthened during the manufacturing process
 - Brake system features a corrosion-fighting process called Ferritic Nitro-Carburizing (FNC) which can double rotor life expectancy and reduce or minimize rust over non-FNC coated rotors
 
 - 6.6L V8 Gas engine: 
- 401 hp [299 kW] @ 5200 rpm
 - 464 lb-ft of torque [629 N-m] @ 4000 rpm
 - 3.73 rear axle ratio
 - Paired with an Allison® 10-speed automatic transmission
 - Capless fuel fill
 
 - Air filtration monitoring: 
- Alerts the driver when the engine air filter needs replacement
 
 - 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
 
 - Black vertical recovery hooks: 
- Two front frame-mounted1
 
 - Brake pad wear indicator
 - 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
 - Requires gasoline engine
 
 - Electronic shift 2-speed transfer case with push button controls: 
- System shift smoothly between drive settings to handle a variety of road conditions
 - 2WD High for most on-road and highway situations
 - 4WD High for snowy or wet roads when added traction is needed
 - 4WD Low for deep sand, mud or snow to provide maximum torque to all 4 wheels
 - 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
 
 - External engine oil cooler: 
- Heavy-duty air-to-oil cooler
 - Helps extend engine oil life under heavy loads
 
 - Fully boxed frame: 
- Hydroformed front section
 - High-strength steel
 
 - Heavy-Duty Air Filter: 
- Thick construction helps to trap more dirt before it can enter the air intake
 
 - Heavy-duty 720 cold-cranking amps battery: 
- 80 Amp-hr
 - Maintenance-free with rundown protection and retained accessory power
 - 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
 
 - Pickup bed: 
- Roll-formed high-strength steel
 - Includes bed assist step
 
 - Push Button Start
 - Skid plates: 
- Help protect the front underbody, oil pan and transfer case
 - May require additional optional equipment
 
 - Steering: 
- Recirculating Ball with smart flow power steering system
 
 - Suspension Package: 
- Designed to help maintain handling and ride quality while towing a trailer or carrying a load
 
 
- PRO Convenience Package: 
- Rear-window defogger
 - EZ Lift power lock and release tailgate
 - Tinted glass
 - LED cargo bed lighting
 - Outside power-adjustable vertical trailering with heated upper glass mirrors (Crew Cab and Double Cab models)
 
 - Sierra HD Pro Safety: 
- Forward Collision Alert1
 - Following Distance Indicator1
 - Front Pedestrian Braking1
 - IntelliBeam
 - Lane Departure Warning1
 - Buckle to Drive
 - Automatic Emergency Braking1
 
 - Trailering Package: 
- Trailer hitch1
 - Trailering hitch platform
 - Includes a 2.5" receiver hitch (with 2" insert), 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 Guidance2
 - May require additional optional equipment
 
 
- Trailering Information Label: 
- Provides max trailer ratings for tongue weight, conventional, gooseneck hitch and 5th wheel hitch
 
 
- LED Daytime Running Lamps
 - Signature LED Daytime Running Lamps
 
- 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
 
 - 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 in the rearview mirror to help with 5th wheel or gooseneck hitching and to check cargo
 
 - 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
 
 - Following Distance Indicator: 
- Displays the following time in seconds between your vehicle and a detected vehicle in front of you1
 - Designed to help you maintain a safe following distance
 
 - Forward Collision Alert: 
- Warns you if it detects a potential collision with a detected vehicle you're following so you can take action1
 - Can also provide a tailgating alert if you're following a vehicle much too closely
 
 - 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 you1
 - Provides pedestrian alerts and can automatically provide hard emergency braking or enhance driver's hard braking
 - Limited nighttime and low visibility performance
 
 - HD Rear Vision Camera: 
- Shows high-resolution digital image of area directly behind your vehicle while in Reverse1
 - 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
 
 - Hitch Guidance: 
- When in Reverse, displays a centered guideline on the Rear Vision Camera view1
 - Can help you line up the hitch to your trailer
 - When driving, lets you check the trailer using Rear Vision Camera view
 
 - Lane Departure Warning: 
- Alerts you when it detects that you are unintentionally drifting out of detected lane lines1
 - System alerts do not occur if you're using your turn signal, or it detects you may be intentionally leaving your lane
 
 - OnStar Basics: 
- Drive confidently with core OnStar services including1
 - Remote commands
 - Built-in voice assistance
 - Real-time traffic and navigation
 - Automatic Crash Response
 
 - OnStar® services capable: 
- See onstar.com for details and limitations. Services vary by model. Service plan required.
 
 - Rear Seat Belt Indicator
 - 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 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
 
 - Seat Belt Adjustable Guide Loops: 
- Front row only
 
 - Teen Driver: 
- Helps encourage safe driving habits for teens by providing an in-vehicle report card1
 - Activates certain safety systems, if equipped, when a Teen Driver-designated key fob is used
 - Mutes the radio until the front-seat occupants fasten their seat belts
 
 - Tire Pressure Monitoring System with Tire Fill Alert: 
- Monitors tire pressure and alerts of an under-inflated condition in one or more of the tires1
 - Provides visual and audible alerts outside the vehicle when inflating an under inflated tire to the recommended tire pressure
 
 
- Automatic Emergency Braking: 
- Can help you avoid or reduce the severity of a collision with a detected vehicle you're following using camera technology1
 - Can automatically provide hard emergency braking or enhance your hard braking
 - Works at speeds between 5 and 50 mph
 
 - 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 which detects rapid brake pedal applications due to emergency braking situations and provides additional braking via the Antilock Brake System (ABS) module
 - Includes Trailer Sway Control
 - Hill Start Assist
 
 
Dealer Notes
- We're here to help: (580) 225-0132
 




