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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 AT4 trucks
for sale
near
Alum Rock, CA
- 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.






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Reviews
For repairs done
Test drive after repair to ensure job was properly done.
So far so good!
So far so good! This truck is the nicest truck I have ever driven. The stance, ride comfort and options are top notch. I went from a 2023 High Country that was having drive train issues but had all the creature comforts that you would expect in a top of the line truck. With the lack of confidence in that particular models 10 speed transmission issues, it became necessary to reestablish my confidence in my General Motors product.






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New
2025 GMC Sierra 2500 AT4
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Happy Happy Happy
My experience from beginning to end was great. Angelo was great he had everything processed and ready for me...once I arrived all I had to do was test drive sign my forms and I was done...Thank you gentlemen so much.






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Flat tire
Flat tire. GMC worked me in. I received a loaner vehicle so I could finish my errands. Within 2 hours, my tire was repaired and I was on my way.






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Capital Buick GMC
The deanship has excellent service. Dan Cash is the man to see he is excellent with customer service and treats you with respect and honesty.






New
2025 GMC Sierra 2500 AT4
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The experience with Leanna Tabora was great.
The experience with Leanna Tabora was great. She helped me from my initial request on the vehicle and walked me through the trade in perfectly. Given that I was in San Diego, I was not sure how the trade would work out but everyone and dealer followed through with their commitment. Oscar with Finance was great got me in out within about 20 minutes. The entire transaction took about an hour and a half from when I arrived with my trade in vehicle.






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2025 GMC Sierra 2500 AT4
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2025 GMC Sierra 2500 AT4
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Used
2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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New
2025 GMC Sierra 2500 AT4
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Used
2025 GMC Sierra 2500 AT4
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There are 8 matching cars close to your year range.






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New
2026 GMC Sierra 2500 AT4
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New
2026 GMC Sierra 2500 AT4
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About the 2025 GMC Sierra 2500 AT4
AT4 shown.
- Seating
- 5
- Door count
- 4
- Drivetrain
- Four 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 AT4 cost?
The 2025 GMC Sierra 2500 AT4 price depends on optional features. Prices typically start at $71,000.
What are some similar vehicles and competitors of the 2025 GMC Sierra 2500 AT4?
The 2025 GMC Sierra 2500 AT4 compares to and/or competes against the following vehicles:
Is the 2025 GMC Sierra 2500 AT4 reliable?
The 2025 GMC Sierra 2500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2025 Sierra 2500 owners.
100% of drivers recommend this car
- Comfort 5.0
- Interior 5.0
- Performance 5.0
- Value 4.0
- Exterior 5.0
- Reliability 4.0
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) |
*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.
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