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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 3500 Denali trucks
for sale
near
Firestone, CO
- 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.






Vehicle information
Features
Reviews
Couldn't be happier!
Kyle helped us and was fantastic! He worked was low pressure, willing to work with us and very professional! We highly recommend!!!






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features






Used
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Blowout tire
I had a blowout tire. Thank You for your service Jason, staff for getting me back out the road.






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Bash and Nick were great!
Bash and Nick were great! Bash was patient and really worked hard to make sure we were not pressured and that we were getting the car that would be best for us. We got a 2024 Buick Envista and are so happy with the whole experience






Used
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Mr. Alex Rodriguez did a great job! Thanks to him I got
Mr. Alex Rodriguez did a great job! Thanks to him I got another vehicle at weld county garage.

New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Johnson Auto Plaza - Brighton, CO
We were shopping for a new car. The whole process was a good experience from the beginning to the end. I would certainly buy from them again!

New
2025 GMC Sierra 3500 Denali
Vehicle information
Features






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Prompt and quick My salesperson was respectful and
Prompt and quick My salesperson was respectful and fast to answer my questions about my purchase






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Fantastic service
The service was top-notch. I had a broken mirror and worked with Greg Mudd, who found me a great deal on a mirror, painted it, and installed it, saving me about $350. He was incredibly kind and responsive. It was a great repair experience when I had been anticipating a stressful one.






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
So comfortable and easy to work with.
So comfortable and easy to work with. Felt like it was exchanged between someone I have known for a long time. Very accommodating with my schedule.






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
How easy it is to work with Johnson Auto Plaza.
Purchasing my new 2022 GMC Sierra was easy as buying something through the drive-thru. The salesperson, Chris Maneotis was awesome. He explained how my trade-in would go towards the purchase of the new truck and went over the financing and options. I would highly recommend anyone to work with Johnson Auto Plaza.






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Best Experience Ever
Brice and James were amazing? Best experience ever!






New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Customer service was great service department was great
Customer service was great service department was great the only complaint that I have is when I have an appointment for 1:30 and it is two and a half hours later when they get finished do not understand why it takes that long when you have an appointment

New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Lisaevelynsmith@gmail.com
My experience was very professional and l am very thankful l went to Johnson Auto Plaza in Brighton, Colorado. My salesman Mark was very pleasant throughout my buying experience. I will be recommending Johnson Auto Plaza to friends and family.
Used
2025 GMC Sierra 3500 Denali
Vehicle information
Features
New
2025 GMC Sierra 3500 Denali
Vehicle information
Features
There are 3 matching cars close to your year range.






Used
2023 GMC Sierra 3500 Denali
Vehicle information
Features






Used
2024 GMC Sierra 3500 Denali
Vehicle information
Features






Used
2024 GMC Sierra 3500 Denali
Vehicle information
Features
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About the 2025 GMC Sierra 3500 Denali
Pro shown (base trim).
- Seating
- 2
- 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 3500 Denali cost?
The 2025 GMC Sierra 3500 Denali price depends on optional features. Prices typically start at $47,500 and go as high as $96,900 for fully loaded models.
What are some similar vehicles and competitors of the 2025 GMC Sierra 3500 Denali?
The 2025 GMC Sierra 3500 Denali compares to and/or competes against the following vehicles:
*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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