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*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
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New and used
2026 GMC Sierra 2500 trucks
for sale
near
Marlborough, CT
- Down Payment
- $0
- Net trade-in value
- $0
- Months
- 72
- APR
- 7.0%
- Sales tax
- 0.0%
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.






New
2026 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
It was a good experience.
It was a good experience. The lead sales man was a little on the rough side. But all was good.






Vehicle information
Features
Reviews
2019 GMC Terrain Service
I delivered my Terrain to the service department and waited in the lounge. When the service was completed I paid with my GM credit card. The service department delivered my vehichle after it had been washed.






New
2026 GMC Sierra 2500 Denali Ultimate
Vehicle information
Features
Reviews
National part backorder
Due to a national backorder of a part my truck took over 120 days to return. Gates GMC did inform me thru the process






New
2026 GMC Sierra 2500 Denali Ultimate
Vehicle information
Features
Reviews
Car looked better than new after repairs
An amazing experience with the service department and collision center at this dealership after my car was damaged by a fallen tree. The process right from the beginning was flawless. Getting the car to the dealership, getting the rental car, the time it took to get the parts and do the repairs was quicker than expected. The ease and efficiency of the repairs and the quality and timeliness makes Gates GMC. Jamie Laskow and his team get 4 stars from me! I will definitely recommend your dealership in the future.

New
2026 GMC Sierra 2500 Base
Vehicle information
Features
Vehicle information
Features
Reviews
I recently had an outstanding experience purchasing my
I recently had an outstanding experience purchasing my 2024 GMC Sierra AT4 at Gates GMC in Windham, CT. From start to finish, the team at Gates exhibited clear communication and professionalism, making the process seamless and stress-free. What stood out the most was the transparency and honesty in every interaction, with no hidden agendas or surprises. I felt valued and understood, and they made sure all my questions were answered. I highly recommend Gates GMC for anyone looking for a reliable and customer-focused dealership. Thank you for an exceptional experience!






Vehicle information
Features
Reviews
It?
It?s a pleasure buying experience. The sell consultant and the dealer are all friendly, helpful and considerate. The shopping environment is clean. According to the introduction, the after-service is good (because I just buy a new car).






New
2026 GMC Sierra 2500 Denali
Vehicle information
Features
Reviews
Great experience all around, gave me a a fair trade in
Great experience all around, gave me a a fair trade in valve, would highly recommend.






New
2026 GMC Sierra 2500 AT4
Vehicle information
Features






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Reviews
Recently bought a used Lincoln from Blasius.
Recently bought a used Lincoln from Blasius. Great experience! Ken McKay is a great guy. Took car of everything. Great car, great price, great experience. Wouldn't hesitate to go back. And thanks to Chris in finance as well. Another great job.






Vehicle information
Features
Reviews
The salesman was great.
The salesman was great. No pressure and willing to negotiate. The finance guy was even better. Overall great experience buying a car.






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Reviews
Just bought a Colorado from Blasius Branford and
Just bought a Colorado from Blasius Branford and impressed by the quality of vehicle, price and service. Joey Posa and Mike De’Angelo were great to work with—highly recommend






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Features
Reviews
Mike and Chris were awesome.
Mike and Chris were awesome. Chris in finance was extremely helpful. Would definitely recommend. Great service department also.






New
2026 GMC Sierra 2500 Denali
Vehicle information
Features






Vehicle information
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Vehicle information
Features

New
2026 GMC Sierra 2500 AT4
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New
2026 GMC Sierra 2500 Denali
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GMC Sierra 2500 prices by year
Model year | Average price | Deals |
---|---|---|
2025 GMC Sierra 2500 | $73,207 | |
2024 GMC Sierra 2500 | $66,318 | 6 Good deals |
About the 2026 GMC Sierra 2500
Pro shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 0
- Transmission
- 10-Speed A/T
- Engine
- 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)

How much does the 2026 GMC Sierra 2500 cost?
The 2026 GMC Sierra 2500 price depends on trim level and optional features. Prices typically start at $46,700 and go as high as $94,100 for fully loaded models.
What are some similar vehicles and competitors of the 2026 GMC Sierra 2500?
The 2026 GMC Sierra 2500 compares to and/or competes against the following vehicles:
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 172" AT4 | 4WD Crew Cab 159" AT4 |
Inventory price | |
Starting at $71,800 | Starting at $71,600 |
Combined MPG | |
0 | 0 |
Engine | |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
AT4X (1 style)
Style |
---|
4WD Crew Cab 159" AT4X |
Inventory price |
Starting at $83,700 |
Combined MPG |
0 |
Engine |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Denali (2 styles)
Style | |
---|---|
4WD Crew Cab 159" Denali | 4WD Crew Cab 172" Denali |
Inventory price | |
Starting at $75,000 | Starting at $75,200 |
Combined MPG | |
0 | 0 |
Engine | |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Denali Ultimate (2 styles)
Style | |
---|---|
4WD Crew Cab 159" Denali Ultimate | 4WD Crew Cab 172" Denali Ultimate |
Inventory price | |
Starting at $93,800 | Starting at $94,100 |
Combined MPG | |
0 | 0 |
Engine | |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Pro (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
4WD Crew Cab 159" Pro | 4WD Crew Cab 172" Pro | 2WD Crew Cab 172" Pro | 2WD Crew Cab 159" Pro | 2WD Double Cab 162" Pro | 4WD Double Cab 162" Pro | 2WD Double Cab 149" Pro | 4WD Double Cab 149" Pro | 2WD Reg Cab 142" Pro | 4WD Reg Cab 142" Pro |
Inventory price | |||||||||
Starting at $53,200 | Starting at $53,400 | Starting at $50,600 | Starting at $50,400 | Starting at $48,800 | Starting at $51,600 | Starting at $48,600 | Starting at $51,400 | Starting at $46,700 | Starting at $49,500 |
Combined MPG | |||||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Engine | |||||||||
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLE (5 styles)
Style | ||||
---|---|---|---|---|
4WD Crew Cab 159" SLE | 4WD Crew Cab 172" SLE | 4WD Double Cab 149" SLE | 4WD Double Cab 162" SLE | 4WD Reg Cab 142" SLE |
Inventory price | ||||
Starting at $57,400 | Starting at $57,600 | Starting at $55,600 | Starting at $55,800 | Starting at $53,500 |
Combined MPG | ||||
0 | 0 | 0 | 0 | 0 |
Engine | ||||
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLT (2 styles)
Style | |
---|---|
4WD Crew Cab 172" SLT | 4WD Crew Cab 159" SLT |
Inventory price | |
Starting at $65,000 | Starting at $64,700 |
Combined MPG | |
0 | 0 |
Engine | |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
*Estimated payments are calculated by Cars.com and are for informational purposes only. We’ve estimated your taxes based on your provided ZIP code. These estimates do not include title, registration fees, lien fees, or any other fees that may be imposed by a governmental agency in connection with the sale and financing of the vehicle. Other taxes may apply. They do not represent a financing offer or a guarantee of credit from the seller. Actual terms vary by lender.
**Your Saved Vehicles list will be shared along with your contact information when you submit a vehicle request to a dealership. To opt out of this sharing, please view your options on Cars.com Privacy Notice.
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This vehicle is certified pre-owned, backed by a manufacturer warranty, and typically undergoes a rigorous multi-point inspection to ensure quality and reliability.
This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.