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Used
GMC Sierra 1500 AT4
for sale
near
Killian, LA
- 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.
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Nice and friendly Staff
Great people to work with! They were awesome to work with on the purchase of our new vehicle. I would highly recommend them to anyone purchasing or getting your vehicle serviced
I love it the look the interior mine is a red one and it
I love it the look the interior mine is a red one and it looks so good and it’s my baby and it runs so good and the technology is off the chain
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
We purchased a 2024 gmc from Taylor and Austin.
We purchased a 2024 gmc from Taylor and Austin. Great salesman they took time with us and explained everything. This was our 4th purchase from Ross downing and wouldn’t go anywhere else. They gave us everything we asked for. Highly recommend this dealership. A thank you to Taylor And Austin. J&B White
This truck has a jerk when changing gears sometimes.
This truck has a jerk when changing gears sometimes. I enjoy the truck overall easy to handle and comfortable. Drive with ease sight is good when driving.
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Thank you
Thank you Geaux Express for making my decision to purchase so easy! I appreciate the attention and low pressure environment. I will be back in the future
2024 GMC sierra 1500 duramax 3.
2024 GMC sierra 1500 duramax 3.0 is great truck. Great ride and great MPG. 100% recommend to any prospective buyer. Love the truck and how it perform.
Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
They handled everything even delivered my vehicle to me,
They handled everything even delivered my vehicle to me, they went above and beyond what was needed, everything was top notch and everyone was straight forward with me
2022 GMC Sierra SLT 3.0 Duramax
My 2022 GMC Sierra 3.0 Duramax pickup truck is a good truck. I work on a farm and I also drive an hour to see my girlfriend. For the farm, it has excellent towing capability and for the hour long drive to go see my girlfriend, depending on the weather for traveling, I can get up to 35 miles to the gallon!
Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Best experience ever!!!
Best experience I have ever had at a dealership!!! Everyone was happy, smiling, professional and they never put any pressure on me to make my decision. I will buy all of my cars here from now on.
Any reviews on this vehicle is not correct.
Any reviews on this vehicle is not correct. We are first owners and it’s been an excellent truck. We hate to see it go !
Used
2024 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Beginning of Summer with no air in car!
June 5, 2019 my 2008 Dodge Ram 1500 AC went out. I contacted Corey the service manager with my problem and was told to bring my truck in June 9. When I arrived at the dealership we were greeted at our vehicle like family. Did not have to wait to be put in a rental since it would take a day to complete the work. The work was completed on time, and the quote that was given to me was right on. The whole service department goes out of their way to please their customers and I will definitely be returning to this dealership in the future. Corey Hulin and his service department staff has it together and you can be assured that you vehicle is in good hands and your work will be completed on time, with excellent work. Thanks Corey Hulin and service department
Looked at more expensive truck with less options, bought
Looked at more expensive truck with less options, bought the GMC SIERRA AT4 Turbo Diesel 6. I now only put fuel im once a month. And long distance trips are easier due to better fuel economy. One of my best investments ever.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
My experience at Ross Downing was impeccable!
My experience at Ross Downing was impeccable! I have purchased ?several? cars, but this transaction was indeed faultless. Miss Kisha Cushenberry is my car saleswoman - a true professional!
Brake Pad Monitor
2021 GMC sierra 1500, 5.3, crew cab 4x4, 21000 miles. brakepad monitor lites up. dealership says needs brakes and rotors in back. one mo. on warranty. our rural roads dirty up the monitor. Needs new monitor. brakes look great to me. No noises. dealer says parts on order GM strike. Can't replace myself cause of computer...
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Jay Drago was my service advisor, very professional and
Jay Drago was my service advisor, very professional and courteous. Kept me informed about my vehicle. I would love for to be my advisor on each of my visits. Would recommend this dealership
Nicest, best performing truck I've ever owned
My truck has a great appearance, inside and out. It is a pleasure to drive; and rides and performs great. It is the best truck I've ever owned.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
GOOD PEOPLE
helped with repairs after purchase . treated me better than any dealer I have done business with. I live in Miss. and will buy here again. Bruce
2021 GMC Sierra Denali
This is the nicest truck I have ever owned. Lots of features. Takes a while to learn what all it does but a really enjoyable vehicle.
Used
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Hailee was great to work with.
Hailee was great to work with. My 2020 Jeep GC busted a water pump. Service got it repaired along with some other parts. That lifetime warranty is awesome.
Easy purchase experience, would recommend to anyone
Easy purchase experience, would recommend to anyone looking for a new car. Everyone there was friendly and made the whole process as smooth as possible
Used
2025 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Jason Payne definitely made the purchase process the
Jason Payne definitely made the purchase process the easiest! My husband recently had back surgery, so we were able to do everything very quickly, all we had to do was sign papers when we got to the dealership!! We were at the dealership less than an hour! We will definitely be doing business with Jason Payne in the future! I LOVE my GMC Terrain!!!
Let me start by saying I have the AT4 model with the
Let me start by saying I have the AT4 model with the Duramax 3.0L diesel. I had a 2024 Elevation with the 5.3L V-8 that I bought to pull my 22’ camper. While the Elevation pulled my camper fine it drank the gas like it was on a binge. And with a 26 gallon gas tank it seemed I was filling up every couple of hours. After one trip to Nova Scotia I knew something had to change. I pulled my camper out west to Yellowstone and back through Arizona. It pulled like a champ and fillups were a lot more manageable. Even driving the speed limit out west I still got four to five mpg better than with the gasser. I liked the Elevation but I love the AT4. Way nicer ride and great handling. I get 30 per gallon of diesel on the highway if I drive the speed limit but I got it to tow with. I added a Titian replacement fuel tank so I have 43 gallons instead of the 26 it came with.
Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Great truck!
I bought my 2020 with 36k miles a couple of years ago and I now have 60k miles of trouble free very enjoyable driving. It was expensive, but worth every penny. The ride is so quiet and comfortable my wife and I prefer traveling in it instead of our 2018 Acura MDX which we also love. The 5.3 V8 has plenty of power and towing ability. The multi-function tail gate is genius, I hope to never be without one again. We so enjoy all the bells and whistles, especially the wireless phone charger. So glad I bought this truck!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Our overall purchase experience was positive and going
Our overall purchase experience was positive and going forward I will recommend Ross Downing to anyone looking to purchase a GMC product. Both Todd Parker and Brandon Douglas were good representatives for Ross Downing.
Great Buy!
This truck is amazing. Turning heads all over as we tour the area. Those riding with is also enjoy the comforts and safety features. Great Buy!
GMC Certified
2026 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Our salesman, Landon Crane, is new and even didn’t have
Our salesman, Landon Crane, is new and even didn’t have his business cards yet but he’s gonna go far. He was extremely polite, willing to answer questions and had no problem getting up to ask about an answer he wasn’t certain of. I appreciated he wasn’t pushy, condescending, or fake. He may be young and just getting started but you won’t go wrong by requesting him for your salesman. The young man knows how to give an appropriate handshake on top of all his other positive qualities. From start to finish it was a relaxed buying experience. Give him a call!
A little expensive, but comfortable, quiet, smooth ride.
A little expensive, but comfortable, quiet, smooth ride. Great performance out of the 6.2L and better than expected fuel economy in the low 20s. Outstanding interior and good looking exterior, especially in the Downpour Metallic color. I don’t have 700 miles on it yet and have owned it for 3 weeks. Therefore, I can’t pass judgement yet on the reliability, but so far I am very satisfied. This replaced an 8 year old Ford F150 that served me quite well with only a couple of issues in the 100,000 plus miles.
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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.
**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.
GMC Sierra 1500 AT4 by city
-
GMC Sierra 1500 AT4 in Laplace, LA
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2026 GMC Sierra 1500 AT4
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GMC Sierra 1500 SLT
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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.