New 2026 GMC Sierra 2500 HD Pro Truck Photo 1 of 7

New 2026 GMCSierra 2500 HD Pro

Diesel

In Transit

Mountain Home Auto Ranch Chevrolet

Location Details Website

Exterior Color: Sterling Metallic
Interior Color: Jet Black, Cloth seat trim
Transmission: Automatic
Drivetrain: 4WD

Engine: 6.6L Duramax Turbo-Diesel V8 engine
VIN: 1GT4ULEY1TF225860
Stock Number: HG06074

Warranty

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 >>>

Powertrain

Fuel System: Direct Injection
Fuel tank capacity: 36 gal
Horsepower: 470

Entertainment

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:
- Multi-touch display and AM/FM stereo
- 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

Exterior

18" LT275/70R18 all-terrain, blackwall spare tire:
- May require additional optional equipment
18" LT275/70R18E all-terrain, blackwall tires
18" steel painted Silver wheels
Animated LED projectors headlamps with LED turn signals and Daytime Running Lamps
Black beltline moldings
Black door handles
Black outside power-adjustable vertical trailering mirrors:
- Lower convex mirrors
- Heated upper glass
- Integrated turn signal indicators
- Manual folding/extending
- Extends 3.31-inches
- May require additional optional equipment
Cab-mounted cargo area lamps:
- Activated by switch located on center switch bank
- Illuminates the cargo bed area
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 conditions¹
LED tail lamps
Locking tailgate
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
Spare tire carrier lock:
- Helps keep spare tire secure
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
- Does not include spray-on liner on tailgate due to Black composite inner panel
- Includes GMC logo on all trims except PRO
Standard tailgate
Tailgate and bed rail protection caps
Tailgate with EZ Lift assist, power lock & release:
- Hitch area lighting
- May require additional optional equipment
Winter Grille Cover:
- May require additional optional equipment

Interior

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
Adaptive Cruise Control:
- Automatically follows a detected vehicle ahead at a driver-selected following gap¹
- If no vehicle is detected in your path, works like regular cruise control
- You can always override the feature and take control
- Adaptive Cruise Control is compatible with Trailering. It is important to ensure your trailer has functioning brakes while trailering with heavier loads. Read your Owner's Manual to review Trailer Brake requirements and to learn more about the limitations of this system.
Assist handles:
- Front A-pillar mounted for Driver and Passenger
- Rear B-pillar mounted
Carpeted floor covering:
- Color-keyed to match the interior
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
Front rubberized-vinyl floor mats:
- Helps protect your interior from road debris and the elements
- May require additional optional equipment
Inside rearview manual day/night mirror:
- Adjust the tilt of the mirror to help reduce glare during nighttime driving
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 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
Rear air vents:
- Provides cabin comfort for rear occupants
Rear rubberized-vinyl floor mats:
- Helps protect your interior from road debris and the elements
- May require additional optional equipment
Rear window defogger:
- Utilizes a warming grid to help remove fog or frost from the rear window
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
Single-zone manual climate control:
- Maintains a selected temperature
Steering wheel
USB ports:
- (2) Data/charge ports located on instrument panel¹

Mechanical

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)
- May require additional optional equipment
11,350 lbs. GVWR:
- When properly equipped; includes weight of vehicle, passengers, cargo and equipment
220-amp alternator:
- May require additional optional equipment
3.42 rear axle ratio:
- Requires a diesel 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 Duramax Turbo-Diesel V8 engine:
- 470 hp [350.5 kW] @ 2800 rpm
- 975 lb-ft of torque [1322 Nm] @ 1600 rpm
- 3.42 rear axle ratio
- Exhaust brake
- Engine block heater
- Capped fuel fill
- Paired with an Allison^® 10-speed automatic transmission
- Diesel Exhaust Fluid (DEF) fill located in fuel door
- Engine after run feature for cooling performance
- May require additional optional equipment
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
Capped fuel fill:
- Requires diesel engine or pickup bed delete
Diesel exhaust brake:
- Reduces the amount of conventional braking needed while towing a heavy trailer or driving downhill
- Uses the variable vanes in the turbocharger to smoothly and quietly create additional back pressure in the engine to help slow the vehicle
- Works with the transmission's Tow/Haul mode and Auto Grade Braking to help the driver maintain the desired speed even on long, steep downgrades
- Switch activated
- May require additional optional equipment
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
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 extend engine oil life under heavy loads
Fully boxed frame:
- Hydroformed front section
- High-strength steel
Gooseneck / 5th Wheel Prep Package:
- Hitch platform to accept Gooseneck or 5th wheel hitch
- Hitch platform with tray to accept ball and stamped box holes with caps installed
- Box mounted 7-pin trailer harness
- May require additional optional equipment
Heavy-Duty Air Filter:
- Thick construction helps to trap more dirt before it can enter the air intake
Heavy-duty dual batteries with 1460 cold-cranking amps:
- 70 Amp-hr
- Maintenance-free with rundown protection and retained accessory power
- 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:
- May require additional optional equipment
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

Package

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
X31 Off-Road Package:
- Off-Road suspension
- Hill Descent Control
- Skid plates
- Twin-tube Rancho shocks
- X31 hard badge
- May require additional optional equipment

Safety-Exterior

LED Daytime Running Lamps
Signature LED Daytime Running Lamps

Safety-Interior

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
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
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
OnStar^® services capable:
- See onstar.com for details and limitations. Services vary by model. Service plan required.
Rear Seat Belt Indicator
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
Trailering Information Label:
- Provides max trailer ratings for tongue weight, conventional, gooseneck hitch and 5th wheel hitch

Safety-Mechanical

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
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
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

Vehicle Details
Experience power and capability with this 2026 GMC Sierra 2500 Pro 4WD, now available in Mountain Home, ID. Equipped with a stout V8 6.6L diesel engine, this heavy-duty truck delivers exceptional torque and towing performance for demanding jobs or adventurous weekends. Rugged yet refined, the GMC Sierra 2500 Pro blends professional-grade capability with modern convenience and safety. This GMC Sierra 2500 comes loaded with technology that makes driving easier and more connected. Stay confident with Lane Departure Warning and a Back-Up Camera for safer maneuvering. Seamlessly integrate your smartphone using Apple CarPlay and Android Auto, and enjoy Hands Free Bluetooth for calls and audio streaming on the go. The 4WD system ensures traction and control across Idaho's diverse terrain, while the diesel V8 provides long-lasting durability and efficient highway cruising. Priced to move this GMC Sierra 2500 Pro offers the best price in Mountain Home and surrounding areas, delivering outstanding value for a heavy-duty truck with premium features. Whether you need a dependable workhorse for towing and hauling or a comfortable, tech-forward ride for daily driving, this GMC Sierra checks every box. Schedule a test drive in Mountain Home, ID, and feel the diesel V8 power and confidence of 4WD yourself. Competitive pricing, robust capability, and advanced safety tech make this 2026 GMC Sierra 2500 Pro a smart choice for drivers who demand performance.

Equipment
The vehicle's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. This 2026 GMC Sierra 2500 features a hands-free Bluetooth phone system. This 3/4 ton pickup comes equipped with Android Auto for seamless smartphone integration on the road. This vehicle offers Apple CarPlay for seamless connectivity. See what's behind you with the back up camera on this 2026 GMC Sierra 2500. This vehicle is outfitted with an OnStar communication system. The vehicle has a V8, 6.6L high output engine. Greater towing safety becomes standard with the installed trailer brake. This vehicle has four wheel drive capabilities. This 2026 GMC Sierra 2500 gleams with an elegant silver clear coated finish. This 3/4 ton pickup has an automatic transmission. This GMC Sierra features cruise control for long trips. The GMC Sierra has a diesel engine. Electronic Stability Control is one of many advanced safety features on the vehicle.

Overall3.8Out of 5

Transmission trash
By Jason on Monday, April 07, 2025
2.0
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk…
Infotainment system unreliable!
By Brian C on Friday, June 27, 2025
3.0
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another.…
Fantastic truck
By Jjj on Sunday, November 07, 2021
5.0
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!…

* MSRP is the Manufacturer's Suggested Retail Price (MSRP) of the vehicle. It does not include any taxes, fees or other charges. Pricing and availability may vary based on a variety of factors, including options, dealer, specials, fees, and financing qualifications. Consult your dealer for actual price and complete details. Vehicles shown may have optional equipment at additional cost. * The estimated selling price that appears after calculating dealer offers is for informational purposes, only. You may not qualify for the offers, incentives, discounts, or financing. Offers, incentives, discounts, or financing are subject to expiration and other restrictions. See dealer for qualifications and complete details. * The advertised price does not include sales tax, vehicle registration fees, other fees required by law or finance charges. A doc fee, up to $499, may be added to the price of the vehicle. * Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness. * In transit means that vehicles have been built, but have not yet arrived at your dealer. Images shown may not necessarily represent identical vehicles in transit to your dealership. See your dealer for actual price, payments and complete details.

* The estimated selling price that appears after calculating dealer offers is for informational purposes, only. You may not qualify for the offers, incentives, discounts, or financing. Offers, incentives, discounts, or financing are subject to expiration and other restrictions. See dealer for qualifications and complete details.

MSRP: $70,430
Auto Ranch Best Price*: $70,430
Purchase AllowanceDetails: -$500
Final Price: $69,930
GM Military OfferDetails: -$500
Conditional Final Price: $69,430

* Dealer Savings Includes a $1000 Trade Discount and a $1000 Finance Discount.

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New 2026 GMCSierra 2500 HD Pro

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Infotainment system unreliable!

Fantastic truck

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New 2026 GMCSierra 2500 HD Pro

Included Packages & Accessories

DETAILED_SPECIFICATIONS hidden

Warranty

Seats and Trim

Powertrain

Specs and Dimensions

Entertainment

Exterior

Interior

Mechanical

Package

Safety-Exterior

Safety-Interior

Safety-Mechanical

Dealer Notes

KBB.com Consumer Reviews

Transmission trash

Infotainment system unreliable!

Fantastic truck