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New and used 2025 GMC Sierra 2500 trucks for sale near Cos Cob, CT

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109 matches 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%

Vehicle information

Ext. color: Onyx Black
Int. color: Jet Black, Forge Perforated Leather seat trim
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 25106
VIN: 1GT4UREY5SF321587

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

Reviews

Milea GMC review

Saturday Tow

Rob Birchall and the team were great. Was towed in on a Saturday and they were able to diagnose the problem and have me back on the road in 90 minutes.

2025 GMC Sierra 2500 Denali review

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.

Vehicle information

Ext. color: Onyx Black
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: N373241
VIN: 1GT4UZEY9SF373241

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch
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

Reviews

Ingersoll Auto of Danbury review

The Ingersoll employees provide excellent and friendly

The Ingersoll employees provide excellent and friendly service as always whenever I go there for service or to purchase a new car. I highly recommend the dealership.

Vehicle information

Ext. color: Sterling
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: N294250
VIN: 1GT4UXEY3SF294250

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch
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

Reviews

Ingersoll Auto of Danbury review

Always reliable and outstanding customer service.

Always reliable and outstanding customer service. Waiting area well stocked and comfortable. Staff friendly and informative, attentive to details and future needs. Service department used modern diagnostic equipment that can be reviewed while waiting

Vehicle information

Ext. color: White Frost Tri-Coat
Int. color: Black
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: N291997
VIN: 1GT4UREY4SF291997

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch
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

Reviews

Ingersoll Auto of Danbury review

Always great customer service.

Always great customer service. Excellent waiting area with fresh coffee and a good choice of goodies while you wait! I love the new computer system showing your car while you wait

Vehicle information

Ext. color: Void Black
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Diesel (B20 capable)
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G51601
VIN: 1GT4UXEY4SF329491

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

Reviews

King O'Rourke Auto Group review

Apple play does not work?

The dealer was great. But the apple play in my 2024 Sierra is not yet supported. What the xxxx is that about? How the heck can you sell an incomplete vehicle? I?d like to know when it will be fixed. And it better be soon.

Vehicle information

Ext. color: Void Black
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Diesel (B20 capable)
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G51577
VIN: 1GT4UXEY6SF328679

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

Reviews

King O'Rourke Auto Group review

Service

Sean my service provider was excellent and insured my interaction with the service department went smoothly.

Vehicle information

Ext. color: Void Black
Int. color: Alpine Umber H40
Drivetrain: Four-wheel Drive
Fuel type: Diesel (B20 capable)
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G51664
VIN: 1GT4UXEYXSF339877

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

Reviews

King O'Rourke Auto Group review

Great purchase experience

John McCoy was a great salesman! He was honest, communicated well, and applied no pressure to make a decision. This dealership was the only one on Long Island that was willing to negotiate a deal on the car I purchased. Every other dealer said that they could not lower the price of the car even $1. This is the third vehicle that I purchased or leased from this dealership and I will return when I am ready for my next vehicle.

Vehicle information

Ext. color: Sterling Metall
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: G51804
VIN: 1GT4ULE71SF367924

Features

Convenience: Keyless Entry, Keyless Start, Navigation System
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior: Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Stability Control

Reviews

King O'Rourke Auto Group review

Great deal.

Great deal. No gimmicks or nonsense. Thanks Sean for making it such a smooth transaction. When it?s time to for another purchase I will certainly be back.

Vehicle information

Ext. color: Sterling Metall
Int. color: Jet Black H0u
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Not Specified
Engine: 8 Cylinder
Stock #: G51783
VIN: 1GT4ULE75SF368168

Features

Convenience: Keyless Entry, Keyless Start, Navigation System
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior: Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Stability Control

Reviews

King O'Rourke Auto Group review

Buying my Buick was a great experience, they give you

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!!

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Vehicle information

Ext. color: Downpour Metallic
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: B2280
VIN: 1GT4UXEY6SF207943

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, Rain Sensing Wipers, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Black
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: 451320A
VIN: 1GT4UXEY0SF253333

Features

Convenience: Adaptive Cruise Control, Cooled Seats, 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
Safety: Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, Lane Departure Warning, Rain Sensing Wipers, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Gray
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: 451359
VIN: 1GT4UREY7SF345745

Features

Convenience: Adaptive Cruise Control, Heated Steering Wheel, Keyless Start, Remote Start
Entertainment: Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch
Safety: Backup Camera, Brake Assist, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Downpour Met
Int. color: Jet Blk Clth
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: S9101
VIN: 1GT4ULEY3SF262763

Features

Convenience: Keyless Entry, Keyless Start, Navigation System
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior: Alloy Wheels, 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

Vehicle information

Ext. color: Onyx Black
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 00360422
VIN: 1GT4UPE79SF360422

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®, Premium Sound System, 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

Vehicle information

Ext. color: Sterling Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 25445
VIN: 1GT4UNEY4SF373902

Features

Convenience: Adaptive Cruise Control, 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, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Summit White
Int. color: Jet Black, Vinyl Seat Trim
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 25672
VIN: 1GT4ULEY2SF316943

Features

Convenience: Keyless Entry, Keyless Start, Navigation System
Entertainment: Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior: Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Stability Control

Vehicle information

Ext. color: Summit White
Int. color: Alpine Umber
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 6.6L V8 32V DDI OHV Turbo Diesel
Stock #: R3612
VIN: 1GT4UXEY5SF318600

Features

Convenience: Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Remote Start
Entertainment: Bluetooth®, HomeLink, Premium Sound System, Satellite Radio, WiFi Hotspot
Exterior: Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety: Backup Camera, Blind Spot Monitor, Brake Assist, Lane Departure Warning, Rain Sensing Wipers, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Onyx Black
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: B250332
VIN: 1GT4UNEY8SF276184

Features

Convenience: Adaptive Cruise Control, 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, Tow Hitch, Tow Hooks
Safety: Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Lane Departure Warning, Rain Sensing Wipers, Stability Control
Seating: Leather Seats, Memory Seat

Vehicle information

Ext. color: Summit White
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 6.6L V8 16V GDI OHV
Stock #: G9601
VIN: 1GT5UME70SF145160

Features

Convenience: Adaptive Cruise Control, Heated Steering Wheel, Keyless Start, Remote Start
Entertainment: Apple CarPlay®, Bluetooth®, Satellite Radio, USB Port
Exterior: Alloy Wheels, Tow Hitch
Safety: Backup Camera, Brake Assist, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control

*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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