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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
2025 GMC Sierra 2500 trucks
for sale
near
Windsor Locks, 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
2025 GMC Sierra 2500 Base
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
Purchased a great car both times.
I purchased a XT5, 1/30, this is my second purchase from Sullivan Cadillac since 11/21. Both experience were 5 star, Jack and the hold team at the dealership were just supper. I would recommend this dealership and Jack to anyone. Great job folks.






New
2025 GMC Sierra 2500 Denali
Vehicle information
Features






New
2025 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Awesome place
I had an awesome experience with these folks. Friendly, informative, answered all of my questions. Jonathon was a joy to work with, as was Jeff. I have told all of my family what a great, stress free experience I had. If I ever have the need again it will be my go to place!

New
2025 GMC Sierra 2500 SLE
Vehicle information
Features
Reviews
Review
Thorough and courteous. Great customer service. Oil changed and issue checked out and repaired.
Vehicle information
Features
Reviews
Great service every time
I bring my fleet vehicle here for repairs/maintenance. Other dealerships have treated me like a second class customer because the fleet company pays for everything. I have never once felt that way at Sullivan's. They are always kind and have gone above and beyond for me at times. My husband became a loyal customer here because of their great customer service.
Vehicle information
Features
Reviews
Vinny at Sullivan's Northwest Hills was great to work
Vinny at Sullivan's Northwest Hills was great to work with and to buy a car from. It was truly a good experience. He was very knowledgeable and let you lead the conversation. I will buy my next vehicle from Vinny the next time I need one.






New
2025 GMC Sierra 2500 SLE
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
2025 GMC Sierra 2500 SLT
Vehicle information
Features






New
2025 GMC Sierra 2500 SLT
Vehicle information
Features

New
2025 GMC Sierra 2500 SLE
Vehicle information
Features






New
2025 GMC Sierra 2500 Base
Vehicle information
Features






New
2025 GMC Sierra 2500 Denali
Vehicle information
Features






New
2025 GMC Sierra 2500 SLT
Vehicle information
Features






New
2025 GMC Sierra 2500 Base
Vehicle information
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New
2025 GMC Sierra 2500 Base
Vehicle information
Features






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
2025 GMC Sierra 2500 Denali
Vehicle information
Features






Vehicle information
Features

New
2025 GMC Sierra 2500 AT4
Vehicle information
Features
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About the 2025 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 2025 GMC Sierra 2500 cost?
The 2025 GMC Sierra 2500 price depends on trim level and optional features. Prices typically start at $46,300 and go as high as $93,600 for fully loaded models.
What are some similar vehicles and competitors of the 2025 GMC Sierra 2500?
The 2025 GMC Sierra 2500 compares to and/or competes against the following vehicles:
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 159" AT4 | 4WD Crew Cab 172" AT4 |
Inventory price | |
Starting at $71,000 | Starting at $71,200 |
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) |
AT4X (1 style)
Style |
---|
4WD Crew Cab 159" AT4X |
Inventory price |
Starting at $83,200 |
Combined MPG |
0 |
Engine |
470.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Denali (2 styles)
Style | |
---|---|
4WD Crew Cab 172" Denali | 4WD Crew Cab 159" Denali |
Inventory price | |
Starting at $74,100 | Starting at $73,900 |
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 $93,300 | Starting at $93,600 |
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) |
Pro (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
2WD Double Cab 162" Pro | 2WD Double Cab 149" Pro | 4WD Double Cab 149" Pro | 4WD Double Cab 162" Pro | 2WD Reg Cab 142" Pro | 4WD Reg Cab 142" Pro | 4WD Crew Cab 159" Pro | 4WD Crew Cab 172" Pro | 2WD Crew Cab 172" Pro | 2WD Crew Cab 159" Pro |
Inventory price | |||||||||
Starting at $48,400 | Starting at $48,200 | Starting at $51,000 | Starting at $51,200 | Starting at $46,300 | Starting at $49,100 | Starting at $52,800 | Starting at $53,000 | Starting at $50,200 | Starting at $50,000 |
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 (10 styles)
Style | |||||||||
---|---|---|---|---|---|---|---|---|---|
4WD Crew Cab 172" SLE | 4WD Crew Cab 159" SLE | 2WD Crew Cab 172" SLE *Ltd Avail* | 2WD Crew Cab 159" SLE *Ltd Avail* | 4WD Double Cab 149" SLE | 2WD Double Cab 162" SLE *Ltd Avail* | 2WD Double Cab 149" SLE *Ltd Avail* | 4WD Double Cab 162" SLE | 2WD Reg Cab 142" SLE *Ltd Avail* | 4WD Reg Cab 142" SLE |
Inventory price | |||||||||
Starting at $57,300 | Starting at $57,100 | Starting at $54,500 | Starting at $54,300 | Starting at $55,300 | Starting at $52,700 | Starting at $52,500 | Starting at $55,500 | Starting at $50,400 | Starting at $53,200 |
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) |
SLT (4 styles)
Style | |||
---|---|---|---|
2WD Crew Cab 172" SLT *Ltd Avail* | 4WD Crew Cab 159" SLT | 2WD Crew Cab 159" SLT *Ltd Avail* | 4WD Crew Cab 172" SLT |
Inventory price | |||
Starting at $62,200 | Starting at $64,700 | Starting at $61,900 | Starting at $65,000 |
Combined MPG | |||
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) |
*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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