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New and used 2025 GMC Sierra 1500 Denali Ultimate trucks for sale near Cos Cob, CT

Filters 5 Year Trim Model Price & payment Make Mileage All filters
1 match 30 miles from 06807
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Est. $400 /mo*
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.

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2025 GMC Sierra 1500 Denali Ultimate

New

2025 GMC Sierra 1500 Denali Ultimate

$86,805
Est. $1,574/mo*
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Thunderstrm Gry
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
MPG: 14-17
Fuel type: Gasoline
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G51037
VIN: 1GTUUHELXSZ221322

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, HomeLink, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat

Reviews

King O'Rourke Auto Group review

Buying my Buick was a great experience, they give you

April 2, 2025
By Jean M Montecalvo from Center Moriches, NY

Buying my Buick was a great experience, they give you time to breath while looking around then approach for help and answer questions! Service area is alway great, always work with you to get the appointment you need! Will be leasing my next car from them for sure!!

2025 GMC Sierra 1500 Denali Ultimate review

I have the 1500 double cab with standard bed.

November 14, 2024
By Jack from Georgetown, Texas
Owns this car

I have the 1500 double cab with standard bed. The reason I have this vehicle is I really like the 6.5 foot bed. The crew cab with same bed is just too long. The things I dislike about this model is that it only comes in the SLE model. For the 2025 that means the external mirrors do NOT have a power fold in and it does not have a seat memory for more that one driver. The power fold in for the mirrors is extremely important to me.

There are 9 matching cars close to your year range.

2026 GMC Sierra 1500 Denali Ultimate
2026 GMC Sierra 1500 Denali Ultimate
2026 GMC Sierra 1500 Denali Ultimate
2026 GMC Sierra 1500 Denali Ultimate
2026 GMC Sierra 1500 Denali Ultimate
2026 GMC Sierra 1500 Denali Ultimate View all 24 photos

New

2026 GMC Sierra 1500 Denali Ultimate

$87,290
Est. $1,583/mo*
Milea GMC
Bronx, NY (20 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Onyx Black
Int. color: Alpine Umber, Full grain leather front seat trim
Drivetrain: Four-wheel Drive
MPG: 15-19
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: 26019
VIN: 1GTUUHELXTZ120069

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Denali Ultimate View all 32 photos

GMC Certified

2023 GMC Sierra 1500 Denali Ultimate

41,599 mi.
$59,999 $1,555 price drop
Est. $1,088/mo*
Free CARFAX 1-Owner Report
Rockville Centre GMC
Rockville Centre, NY (29 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Onyx Black
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
MPG: 22-27
Fuel type: Diesel
Transmission: 10-Speed A/T
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: PZ112877
VIN: 1GTUUHE8XPZ112877

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rain Sensing Wipers, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
2024 GMC Sierra 1500 Denali Ultimate
2024 GMC Sierra 1500 Denali Ultimate
2024 GMC Sierra 1500 Denali Ultimate
2024 GMC Sierra 1500 Denali Ultimate
2024 GMC Sierra 1500 Denali Ultimate
2024 GMC Sierra 1500 Denali Ultimate View all 24 photos

Used

2024 GMC Sierra 1500 Denali Ultimate

21,590 mi.
$72,995
Est. $1,324/mo*
Free CARFAX 1-Owner Report
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Sterling Metallic
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
MPG: 15-19
Fuel type: Gasoline
Transmission: 10-Speed Shiftable Automatic
Engine: EcoTec3 6.2L V8 420hp 460ft. lbs.
Stock #: 9633G
VIN: 1GTUUHEL3RZ234195

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
2026 GMC Sierra 1500 Denali Ultimate

New

2026 GMC Sierra 1500 Denali Ultimate

$85,790
Est. $1,556/mo*
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Onyx Black Gba
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: G60110
VIN: 1GTUUHE84TZ110567

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
No photo available

New

2026 GMC Sierra 1500 Denali Ultimate

$85,790
Est. $1,556/mo*
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Onyx Black Gba
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Not Specified
Engine: 6 Cylinder
Stock #: G60126
VIN: 1GTUUHE86TZ110263

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
No photo available

New

2026 GMC Sierra 1500 Denali Ultimate

$87,685
Est. $1,590/mo*
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Sterling Metal
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G60105
VIN: 1GTUUHEL7TZ110146

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
No photo available

New

2026 GMC Sierra 1500 Denali Ultimate

$87,685
Est. $1,590/mo*
King O'Rourke Auto Group
(95 reviews)
Smithtown, NY (27 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Sterling Metal
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G60125
VIN: 1GTUUHEL3TZ109916

Features

Convenience: Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Satellite Radio, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
No photo available

Used

2024 GMC Sierra 1500 Denali Ultimate

10,419 mi.
$68,818
Est. $1,248/mo*
Free CARFAX Report
Blasius Mitsubishi
Brookfield, CT (30 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Black
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG: 15-19
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 3.0L I6 24V DDI DOHC Turbo Diesel
Stock #: Z3876
VIN: 1GTUUHE82RZ358633

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, Lane Departure Warning, Rain Sensing Wipers, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
No photo available

Used

2023 GMC Sierra 1500 Denali Ultimate

45,999 mi.
$56,200 $197 price drop
Est. $1,019/mo*
Free CARFAX 1-Owner Report
Blasius Mitsubishi
Brookfield, CT (30 mi.)
Call Check availability Check availability

Vehicle information

Ext. color: Titanium Rush Metallic
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
MPG: 15-19
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 6.2L V8 16V GDI OHV
Stock #: Z3877
VIN: 1GTUUHEL3PZ327716

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat
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About the 2025 GMC Sierra 1500 Denali Ultimate

Basics

Denali Ultimate shown.

Seating
5
Door count
4
Drivetrain
Four Wheel Drive
Combined MPG
16
Transmission
10-Speed A/T
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel)
Side view of the 2025 GMC Sierra 1500 Denali Ultimate
FAQs

How much does the 2025 GMC Sierra 1500 Denali Ultimate cost?

The 2025 GMC Sierra 1500 Denali Ultimate price depends on optional features. Prices typically start at $84,200.

What is the MPG of the 2025 GMC Sierra 1500 Denali Ultimate?

The 2025 GMC Sierra 1500 Denali Ultimate offers up to 15 MPG in city driving and 19 MPG on the highway for a combined rating of 16 MPG.

These figures are based on EPA mileage ratings and are for comparison purposes only. The actual mileage will vary depending on the selected vehicle options, driving conditions, driving habits, vehicle maintenance, and other factors.

What are some similar vehicles and competitors of the 2025 GMC Sierra 1500 Denali Ultimate?

The 2025 GMC Sierra 1500 Denali Ultimate compares to and/or competes against the following vehicles:

Is the 2025 GMC Sierra 1500 Denali Ultimate reliable?

The 2025 GMC Sierra 1500 has an average reliability rating of 5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2025 Sierra 1500 owners.

Ratings (1 review)

100% of drivers recommend this car

Rating breakdown (out of 5):
  • Comfort 5.0
  • Interior 5.0
  • Performance 5.0
  • Value 5.0
  • Exterior 4.0
  • Reliability 5.0
Trims

Denali Ultimate (1 style)

Style
4WD Crew Cab 147" Denali Ultimate
Inventory price
Starting at $84,200
Combined MPG
16
Engine
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline 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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GMC Sierra 1500 trims
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