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New and used
2026 GMC Sierra 2500 AT4 trucks
for sale
near
Chalmette, LA
43 matches
30 miles from 70043
Be the first to know!
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.
**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
Ext. color: Sterling Metallic
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 #: 26G1605
VIN: 1GT4UPEY4TF164947
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
Reviews
Legacy GMC review
Lots of inventory, clean n comfortable showroom, salesmen
Lots of inventory, clean n comfortable showroom, salesmen are personable, efficient, knowledgeable, n answered all inquiries
New
2026 GMC Sierra 2500 AT4
$80,085
MSRP $90,085
$1,000 price drop
Crown Buick GMC
Vehicle information
Ext. color: Tan
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 #: 267655
VIN: 1GT4UPEYXTF156447
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
Reviews
Crown Buick GMC review
Joseph Grego was a very helpful salesperson.
Joseph Grego was a very helpful salesperson. This was our second purchase from Crown Buick through Joseph Grego and we appreciated doing business with him.
New
2026 GMC Sierra 2500 AT4
$80,085
MSRP $90,085
$1,000 price drop
Crown Buick GMC
Vehicle information
Ext. color: Tan
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 #: 267707
VIN: 1GT4UPEY9TF160876
Features
Convenience:
Adaptive Cruise Control, Heated Steering Wheel, Keyless Start, Remote Start
Entertainment:
Apple CarPlay®, 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
Reviews
Crown Buick GMC review
Amazing experience!
Amazing experience! Everything was transparent no surprises, was worried about the long drive and having the dealership change things up on me but no everything was perfect. My sales man really is a down to earth gentleman, he went above and beyond for me and really hit a personal level of trust! Kimble wright is a name I will never forget based on my experience at this dealership.
New
2026 GMC Sierra 2500 AT4
$89,555
MSRP $98,555
Legacy Westbank Buick GMC
Vehicle information
Ext. color: Summit White
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 26W4405
VIN: 1GT4UZEY0TF137465
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
Legacy Westbank Buick GMC review
The Staff at Legacy made my process easy.
The Staff at Legacy made my process easy. Gabby and Charissa are the best. Got the car I wanted. I'll continue to do business with them .
New
2026 GMC Sierra 2500 AT4
$91,985
MSRP $91,985
Legacy Westbank Buick GMC
Vehicle information
Ext. color: Summit White
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26W4544
VIN: 1GT4UPEY6TF138110
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
Reviews
Legacy Westbank Buick GMC review
I had a great experience at Westbank Legacy!
I had a great experience at Westbank Legacy! My Service Provider was very courteous and friendly. I was told what my car needed to have service/replaced. I was NOT pressured to get any extra service performed. My car, Envoy 2006, runs great!! Please be sure to tell the mechanics what a great job they did to my Chester! Thank you!!
Vehicle information
Ext. color: Summit White
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 26G1700
VIN: 1GT4UZEY3TF178950
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
Legacy GMC review
Great follow up scheduling went perfect.
Great follow up scheduling went perfect. Repairs were done quickly and it looks awesome.
Vehicle information
Ext. color: Coastal Dune
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 26G1720
VIN: 1GT4UZEY2TF178549
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
Legacy GMC review
Jacob was AWESOME made sure my problem was taken care of!
Jacob was AWESOME made sure my problem was taken care of! Good job Jacob !
Vehicle information
Ext. color: Coastal Dune
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 26G1721
VIN: 1GT4UZEY2TF178986
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
Legacy GMC review
took a little while to locate the part but once it came
took a little while to locate the part but once it came in, installation was done to my satisfaction.
New
2026 GMC Sierra 2500 AT4
$83,775
MSRP $92,775
Legacy Westbank Buick GMC
Vehicle information
Ext. color: Coastal Dune
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26W4481
VIN: 1GT4UPEY8TF162165
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, 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
Legacy Westbank Buick GMC review
Zack was super easy to work with.
Zack was super easy to work with. Took care of everything and kept me informed. All the work was completed as expected and now I', good for another 30,000 miles
New
2026 GMC Sierra 2500 AT4
$80,085
MSRP $90,085
$1,000 price drop
Crown Buick GMC
Vehicle information
Ext. color: Black
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 #: 267658
VIN: 1GT4UPEY4TF156489
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
Reviews
Crown Buick GMC review
Hands down my best car buying experience.
Hands down my best car buying experience. I will purchase my next vehicle with Crown Buick GMC.
Vehicle information
Ext. color: Sterling Metallic
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26G1738
VIN: 1GT4UPEY4TF141541
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
Reviews
Legacy GMC review
Love Jacob!
Love Jacob! He might be my favorite person at the whole dealership. As soon as he sees me drive up, he walks up with a smile on his face.
Vehicle information
Ext. color: Sterling Metallic
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 #: 26G1726
VIN: 1GT4UPEY6TF178431
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
New
2026 GMC Sierra 2500 AT4
$81,080
MSRP $91,080
$1,000 price drop
Crown Buick GMC
Vehicle information
Ext. color: Black
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 #: 267657
VIN: 1GT4UPEY4TF156346
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
Reviews
Crown Buick GMC review
I'm so thankful to our salesman, Joe Grego, in helping my
I'm so thankful to our salesman, Joe Grego, in helping my wife and I purchase a vehicle. We went in looking to purchase a new GMC Terrain, but it was above our budget. Joe made us feel comfortable and was patient with us in finding a 2023 Terrain in great condition and at our price point. I also want to thank the other Joe in the finance department. This was the first 'new' car purchase both me and my wife, so we had a bunch of questions. He was also patient and kind in answering all our questions. He helped us to be able to drive off in a beautiful vehicle that we could truly afford. Also, many thanks, to Joe Grego for capturing the moment by taking a picture of me and my wife in front of our 2023 GMC Terrain. He was thoughtful and respectful to ask our permission to post the picture on social media. We would not have that picture to look back on for memories of our first vehicle if not for him. I will certainly be going back to Crown Buick/GMC for any future vehicle purchases. I'll see you then, Joe.
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 #: 26G1590
VIN: 1GT4UPEY3TF162011
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: Onyx Black
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26G1666
VIN: 1GT4UPEY5TF176380
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
New
2026 GMC Sierra 2500 AT4
$83,775
MSRP $92,775
Legacy Westbank Buick GMC
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26W4482
VIN: 1GT4UPEY0TF162323
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, 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
Legacy Westbank Buick GMC review
Awesome Service!
Awesome Service! I went in to have an oil change and the wait time was not longer than an hour. The staff was very friendly.
Vehicle information
Ext. color: Onyx Black
Int. color: Obsidian Rush
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: Automatic
Engine: 6.6L V-8 gasoline direct injection, variable valve control, regu
Stock #: 26G1701
VIN: 1GT4UZEY2TF178907
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
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 6.6L V-8 diesel direct injection, intercooled turbo, die
Stock #: 26G1577
VIN: 1GT4UPEY7TF160200
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 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 #: 26G1696
VIN: 1GT4UPEY1TF176523
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: 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 #: 26G1705
VIN: 1GT4UPEY1TF178367
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
*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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