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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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Used
GMC cars
for sale
near
St. George, MO
under $40,000
- 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
2020 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Pepper was very helpful and professional.
Pepper was very helpful and professional. I would recommend this dealership because of him. Very pleased.
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
2016 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great service!
Great service!I was picked up at the airport in a very timely manner.I recommend this dealership to anyone I meet that is looking for a vehicle.
My 2016 GMC Sierra 1500 SLT All Terrain - Love it!
I've owned this GMC Sierra 1500 All Terrain since it was 8 months old. With the exception of two warranty issues (failing power brake vacuum pump and transmission electrical harness), I have been totally happy with this truck. Up until now, my 1996 Chevrolet K1500 Silverado with it's 5.7L Vortec engine was my favorite truck of all time, this GMC (5.3L LS engine, 8 speed automatice) has earned the top spot now of my all time favorite truck. It is comfortable to drive, and runs as good as the day I bought it over 5+ years ago. I've got 71.5K miles on it. My biggest issue is I wished it had the 6.2L engine for better towing capabilities. Other than that ... love this truck.

Used
2017 GMC Acadia Limited Limited
Vehicle information
Features
Reviews
Love this dealership!
Love this dealership! The new location is wonderful - I send my family here. My brother bought a car, and loves it!
Newest & Biggest SUV I've ever owned
The styling looks great outside & everything functions as it should. It has loads of options, heated & cooled seats & steering wheel, very cold air, big comfy 7 seats. While not a luxury-looking plush interior, it is very nice. A couple pieces of plastic molding inside are loose, a back panel I tried to take off & the visor mirror on drivers side. I've owned this for 6 months & adore it! Very roomy.

Used
2021 GMC Terrain SLT
Vehicle information
Features
Reviews
Adam Killian and Randy were awesome!
Adam Killian and Randy were awesome! This has been the best experience we’ve had!
Our 2021 Terrain SLT is really a nice auto.
Our 2021 Terrain SLT is really a nice auto. Gets great 30 MPG approximately, But, 0 to 60 is lacking horsepower. Great Little highway auto. Comfortable.....

Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Gavin and Darryl were great salemen to work with!
Gavin and Darryl were great salemen to work with! Appreciate them! The showroom and service dept is nice as well. We have used their service dept in the past and always have a good experience.
Short turn radius
I purchased pre-owned 2020 1500 SLT in February of this year. The truck rides comfortable and has plenty of room front and rear. My and I both enjoy it. My only drawback is the turn radius (lock to lock). It lacks compared to my wife's 2018 Yukon SLT, or the 2016 Ram I traded in. Have to many times maneuver twice to park it going forward or reverse. Otherwise happy with our purchase.






Used
1986 GMC Pickup Truck Base
Vehicle information
Reviews
Good selection, only problem is that there are no
Good selection, only problem is that there are no elcaminos near Schwenksville pa where I live

Used
2024 GMC Terrain SLT
Vehicle information
Features
Reviews
My daughter purchased a new car from Sapaugh last night
My daughter purchased a new car from Sapaugh last night and the experience was the best I have had buying a new car. Logan Cash and Rick Murray were great to work with and took the time to explain everything to my daughter. If anyone is looking for a new car, I highly recommend contacting Logan Cash at Sapaugh.
I always bought the GMC Acadia (4 times) but decided to
I always bought the GMC Acadia (4 times) but decided to try the terrain. I absolutely love it and it's a great car for zipping around in town. I would take it for a weekend trip but not on a long trip as it doesn't have a lot of cab room, but for two people it is fine
Used
2025 GMC Terrain AWD Elevation
Vehicle information
Features
Reviews
COULDNT ASK FOR BETTER SERVICE, GO SEE JOHN IN SERVICE TO
COULDNT ASK FOR BETTER SERVICE, GO SEE JOHN IN SERVICE TO GO ABOVE AND BEYOND YOUR NEEDS
Perfect for a couple.
Perfect for a couple. Plenty of room and should be good for trips. Room for another couple when going out for fun. Ride is very nice and has a lot of safety features.

Used
2021 GMC Acadia Denali
Vehicle information
Features
Reviews
As a woman who honestly knows nothing about cars, I was
As a woman who honestly knows nothing about cars, I was nervous that I was going to be conned into things I didn’t need. I was lucky enough to have Mike help me who was extremely professional, friendly, and explained in detail what I needed now and suggestions for services repairs that were not needed immediately. I never felt pressured but ended up doing everything. There is no other dealership I will use in the future!
Stylish and comfortable.
Just purchased this vehicle a little over a month ago. Love the ride, the comfort of the seats, and, the body style. My only complaint is that it drifts to the right and the steering wheel is several degrees to the left after two trips to the dealer where we purchased it. I will probably have to pay to take it to a known, excellent alignment shop.

Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Conan Thomas was my service advisor and the service was
Conan Thomas was my service advisor and the service was excellent. Took care of everything and made this service call as easy for me as possible. I will always go back to Sapaugh.
Great Truck
I did my research and test drove several models. The GMC 1500 Duramax does everything I want it to do and more. Great gas milage, nice power and very comfortable.
Used
2025 GMC Terrain AWD Elevation
Vehicle information
Features
Reviews
I met with Dave Fisher, he made me feel very comfortable
I met with Dave Fisher, he made me feel very comfortable from the beginning all the way through the whole process of buying a used vehicle. No pressure, no stress. I was very happy I decided to go to Sapaugh GM Country. Thanks Dave for making the process and easy one

Used
2023 GMC Acadia FWD SLE
Vehicle information
Features
Reviews
Perfect for us!
As we age, our reaction time may become slower. This vehicle is loaded with features that make me a safer driver. It connects wirelessly with my iPhone for hands-free Apple CarPlay. Love that! And the Acadia is a dream to drive. It’s the perfect size for me and my family

Used
2024 GMC Terrain SLE
Vehicle information
Features
Reviews
One of the most attractive looking t cars GMC has ever
One of the most attractive looking t cars GMC has ever designed. Looks just like a Lexus. Extremely roomy. Love every aspect of my Terrain.

Used
2019 GMC Canyon Denali
Vehicle information
Features
Reviews
2019 Canyon Denali.
2019 Canyon Denali. All sorts of bells and whistles, several that I don't really need. Biggest complaint: no memory seats and no Homelink garage opener. Ridiculous. What accountant made that decision?
Used
2025 GMC Terrain AWD Elevation
Vehicle information
Features
Used
2024 GMC Terrain SLE
Vehicle information
Features
Reviews
The GMC Terrain is a very dependable auto that I have had
The GMC Terrain is a very dependable auto that I have had no issues. The model is the AT4, which has the headsup display. Interior is nice with leather and all the electronics options.

Used
2020 GMC Acadia SLE
Vehicle information
Features
Reviews
Purchased a Rogue. Quick and easy.
Cory at Auffey is so easy to work with. I have leased several cars from him and each experience was delightful. He’s not pushy and shows you the cars you’re interested in. Either all the frills or non of the frills he’ll find the right car for you.
GMC Acadia good family or commuter car
Bought a demo car . The Acadia has been great . Wife’s car . She likes it . Roomy and good gas mileage . Would also make a great road trip vehicle if I didn’t have a full size Ram .
Vehicle information
Features
Reviews
Thank you to Saint Charles for my new rogue!
Thank you to Saint Charles for my new rogue! AJ was great to work with
Buy one if you can afford it
Excellent and reliable, only thing buyers have to do is buy a AFM disabler that you can stick into OBD2 port to avoid lifter failure (longer story, nobody wants a V8 to run in V4)






Used
2018 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great Service!!
I was looking at buying a 2014 Toyota Corolla and Willie was the 1st person I talked to at the dealership. There was absolutely no pressure from the start of the conversation to even buy the vehicle. Before we even talked about anything sales wise he recommended that I take a look at the car and test drive it before anything to make sure it was everything I wanted. Even during the test drive, we didn't talk about buying the car, it was just a normal conversion. After test driving the vehicle I needed to think about it and even then Willie never tried to keep me at the dealership to try and buy the car. He followed up with me a few days later to see how everything was going and even put the car on hold for me so no one else would take it/buy it. I ended up not buying the vehicle this time, after thinking about it for a few days. The customer service I received and the atmosphere that, i'd have to say Willie created, was Fantastic and would highly recommend asking for him if you are looking for a car. I couldn't be more satisfied with the service I received, and will be going back to him towards the end of the year to then purchase a vehicle.
2018 crew cab gmc Sierra 1500
Am in disbelief every week at the Gas Pumps. Thou a big truck, mileage per gallons are 18 +. Last week it was 22.8. This week 19.78.
Used
2020 GMC Yukon XL Denali
Vehicle information
Features
Reviews
Our salesperson, Willie was very easy to work with and
Our salesperson, Willie was very easy to work with and made the transaction go smoothly. Keep up the great work!
It’s a best car
Perfect . If you want to get good emotions then you need this GMC Yukon Denali XL . L M k if you have any questions please
*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 GMC by price
GMC under $40,000 by city
-
GMC under $40,000 in St. George, MO
126 Great Deals out of 507 listings starting at $4,900
-
GMC under $40,000 in Saint George, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Affton, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Lakeshire, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Bella Villa, MO
123 Great Deals out of 499 listings starting at $4,900
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GMC under $40,000 in Lemay, MO
123 Great Deals out of 498 listings starting at $4,900
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GMC under $40,000 in Green Park, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Grantwood Village, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Mehlville, MO
121 Great Deals out of 488 listings starting at $4,900
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GMC under $40,000 in Marlborough, MO
126 Great Deals out of 507 listings starting at $4,900
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GMC under $40,000 in Concord, MO
124 Great Deals out of 497 listings starting at $4,900
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GMC under $40,000 in Sappington, MO
126 Great Deals out of 507 listings starting at $4,900
GMC under $40,000 in St. George, MO by model
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GMC Sierra 1500 under $40,000 in St. George, MO
27 Great Deals out of 159 listings starting at $8,500
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GMC Acadia under $40,000 in St. George, MO
35 Great Deals out of 125 listings starting at $6,600
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GMC Terrain under $40,000 in St. George, MO
41 Great Deals out of 125 listings starting at $4,900
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GMC Canyon under $40,000 in St. George, MO
5 Great Deals out of 26 listings starting at $12,250
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GMC Yukon under $40,000 in St. George, MO
5 Great Deals out of 26 listings starting at $5,450
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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.