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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
2021 GMC Sierra 1500 trucks
for sale
near
Saint Peters, 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.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Thank you Aaron Voege
My salesman Aaron Voege was excellent,courteous and I will recommend him to all my friends.. He made the transition from my Altima to my new Rogue perfect. Thank you Aaron..
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
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Bought the car I had researched from Suntrup KIA.
Bought the car I had researched from Suntrup KIA. The salesman Moe was way more than helpful.every one I dealt with was super helpful friendly and seemed very genuine. Moe spent as much time as I wanted showing me features. And even would explain more about her telluride that she bought somewhere else. I have bought many cars in my life. But I can honestly this was my best car buying experience. They all did try to meet my terms and I left feeling I got a great deal. And I did.
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 SLT
Vehicle information
Features
Reviews
Worked with Keith Kay and the experience was outstanding.
Worked with Keith Kay and the experience was outstanding. I went in for service and ended up buying a new truck. Great service and great people! I would recommend Keith and the dealership to anyone looking to buy a vehicle. Tom McBride
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 SLT
Vehicle information
Features
Reviews
Jennifer Crawford Was The Best!!!
My experience with this dealership was nothing less than wonderful. The entire sales department was nice and respectful. Sales and leasing consultant Jennifer Crawford was the best from the very moment I pulled up to the lot. She’s a sweetheart and made the process so much easier. She went above and beyond to make sure that I was satisfied. I’ll recommend everyone to her from this day forward!!!
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
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The only disappointment was I scheduled an appt and was
The only disappointment was I scheduled an appt and was there on time yet still had to wait for 2 hours to get my car finished. Service advisor was awesome tho and kept us up to date on the progress. Overall great experience not he work that was done.
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!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Best treatment and exp I have had thanks to Scott
I have been going there for a long time now and as youngish woman who’s not rich - I can tell you I have always been treated with the utmost respect and courtesy! Scott had been my sales man and is great with his knowledge of the vehicles and explained how all the gadgets work and even went over and beyond for me! He communication is excellent and he is upfront and honest as it gets :) He work With my schedule and makes me feel at home while waiting on word from the bank. Scott always explained the paperwork and what it meant and why - which was so nice for him to take the time and do that with me. I have been to other dealerships years ago and most sales people Would Look at Me and see tomboy and think I’m not worth their time or effort and blow me off. Mike the financial guy was also great, he did his best for me & I know because I saw all the work he was doing and he explained things very well also. Especially with the extended warranty - Which is nice because some will just say “ call them yourself to see what’s covered on the vehicle “. They got me one that cover specifics that I needed for the future :) Lastly even when I would pop in to drop of papers or whatever reason- if Scott wasn't there, The other sales men still got my Questions answered and treated me very well. I would recommend anyone go there and they will have a better experience purchasing a vehicle then they have elsewhere and not feel ripped off …. Which we all know is nice - !! Thanks to all the people at Dave Taylor on Manchester rd - stl :)
Used
2021 GMC Sierra 1500
Vehicle information
Features
Reviews
Amazing Team
I broke down in town and Hannah from the parts department spoke to me so clearly and kindly when I was looking for a part. Hannah answered every one of my questions and even sent me pictures of the parts so I could verify it was the right one. Hannah went above and beyond for me and I cannot thank her enough. I came to the dealership and met Lakelynn who graciously assisted me in getting my car serviced. It is not always easy to get same day service but Lakelynn found a tech who had time for my small repair. I am forever grateful to her for going out of her way to ask, even after another staff had concerns about same day availability (at 4pm, which is a miracle in itself)! Finally, me and my friends waited in the lovely waiting area that was clean and comfortable. After being serviced, Lakelynn came over to tell me my car was taken care of and was ready to drive off. Linda at reception checked us out and delivered a friendly smile as we paid for the services. Thank you team! Thank you so much. And a big shout out to these three women who really went above and beyond!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Happy with purchase
Thank You Chad Sigsworth for your help with the purchase of our used car! You made us feel like your own family, no pressure to make the purchase only the truth! We are very satisfied with our Escape!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
We have purchased many vehicles with Jim Butler
We have purchased many vehicles with Jim Butler Chevrolet. Everything from ordering the vehicles , to trading in on our new one always getting a good price and the ease of the financing paperwork. Service is great and informative. No reason to go anywhere else!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
The salesman I dealt with, Rob Fulmer is one of the best.
The salesman I dealt with, Rob Fulmer is one of the best. Strait forward, tells you how it is without any hidden surprises. He was honest, patient and very professional. He easily addressed all my concerns and questions and I would highly recommend asking for him to be your salesman. He was very quick in responding as I was inquiring about a car out of state and he made everything very easy and simple to understand. Out of the other dealerships I inquired about, it was like night and day. I ended up replacing my engine in my old vehicle, so I didn’t actually buy from here but everything was set up to go I just had to sign. He was honest about out the door pricing and the dealership he works for doesn’t try sneaking ridiculous hidden fees like some of these other places. This review is the least I could do since I pretty much wasted his time. Thanks Rob and sorry again!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
This was my second time working with Luke Ramos at Weber
This was my second time working with Luke Ramos at Weber Ford. I came back a second time because I knew I could trust him. Luke is knowledgeable, patient, and truly listens to what you want. He goes above and beyond to make sure you feel confident in your purchase. I highly recommend Luke if you’re looking for someone who takes the time to build lasting customer relationships. I wouldn’t hesitate to work with him again in the future!
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Services
Awesome your staff is the best I've ever !!! Will always you BELLEMANN its literally the best customer service group I've seen Worth the extra mile to get there!!!
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
The customer service at Dave Sinclair Buick was
The customer service at Dave Sinclair Buick was fantastic! They had a lot of work to do on my vehicle. The work was flawless. The level of communication during the whole process was superb. Eric in the auto body shop showed what excellent customer service should look like. I cannot thank them enough for the level of service the team provided.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
We bought a new equinox from Jim Butler Chevrolet
We bought a new equinox from Jim Butler Chevrolet Centralia. Jarrett was our salesman he was on top of everything he explained everything about the vehicle very well. We do recommend this dealership and Jarrett
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Tony, Bryan and Joe made this process painless!
Tony, Bryan and Joe made this process painless! We have bought 3 other vehicles from Jim Butlers in the past 10 years and have never been disappointed
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I had an excellent experience working with Rodney Brown.
I had an excellent experience working with Rodney Brown. From the very beginning he was knowledgeable, attentive, and genuinely interested in helping me find the right truck. He provided clear, honest recommendations, and I never felt pressured to make a purchase.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Mark was great to work with, explained all the features
Mark was great to work with, explained all the features and quirks that our car had. Would definitely recommend. Thanks Mark.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Excellent service.
Excellent service. Approved immediately. Thank you, Peter, for your help! There are many options to choose from.
Vehicle information
Features
Reviews
Great Service
I bought a 22 Ford Bronco from Clement Ford in December 22 and have had on scheduled service which went great using the valet service they provide. However, what really impressed me was this week I had an issue with the bead locks on my wheels. I spoke to Jerry and Alex in their service department and they were able remove the bolts I was having issues with, allowed me to use the valet service once again, and didn't even charge me for the time. I'm very happy with my experience with them so far!
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I recently purchased a car from this dealership, and I
I recently purchased a car from this dealership, and I cannot say enough how wonderful the experience was! From the moment I walked in, I was greeted with a warm and friendly welcome that immediately put me at ease. Every step of the process was smooth, straightforward, and stress-free. The customer service here is nothing short of fantastic. The staff was knowledgeable, patient, and truly seemed to care about helping me find the right vehicle. Special thanks to the general manager, Scott, who went above and beyond to make sure everything went as smoothly as possible. He made what can often be a stressful experience feel easy and enjoyable. I would highly recommend this dealership to my family and friends because I know they would have a great experience, just like I did.
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GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $62,119 | |
| 2024 GMC Sierra 1500 | $50,270 | 9 Great deals |
About the 2021 GMC Sierra 1500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 16
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)
How much does the 2021 GMC Sierra 1500 cost?
The 2021 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 is $37,318, with pricing starting at $12,980.
What is the MPG of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 offers up to 14 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 trim, driving conditions, driving habits, vehicle maintenance, and other factors.
Is the 2021 GMC Sierra 1500 reliable?
The 2021 GMC Sierra 1500 has an average reliability rating of 3.5 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 1500 owners.
Is the 2021 GMC Sierra 1500 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 1500.
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
60% of drivers recommend this car
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
AT4 (2 styles)
| Style | |
|---|---|
| 4WD Crew Cab 157" AT4 | 4WD Crew Cab 147" AT4 |
| Inventory price | |
| Starting at $55,900 | Starting at $54,700 |
| Combined MPG | |
| 16 | 17 |
| Engine | |
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Base (7 styles)
| Style | ||||||
|---|---|---|---|---|---|---|
| 4WD Double Cab 147" | 2WD Double Cab 147" | 2WD Crew Cab 147" | 4WD Crew Cab 147" | 4WD Crew Cab 157" | 4WD Reg Cab 140" | 2WD Reg Cab 140" |
| Inventory price | ||||||
| Starting at $37,300 | Starting at $34,000 | Starting at $36,400 | Starting at $39,700 | Starting at $40,000 | Starting at $34,700 | Starting at $30,100 |
| Combined MPG | ||||||
| 19 | 21 | 21 | 19 | 19 | 16 | 16 |
| Engine | ||||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) |
Denali (3 styles)
| Style | ||
|---|---|---|
| 2WD Crew Cab 147" Denali | 4WD Crew Cab 147" Denali | 4WD Crew Cab 157" Denali |
| Inventory price | ||
| Starting at $55,800 | Starting at $59,300 | Starting at $59,600 |
| Combined MPG | ||
| 17 | 18 | 18 |
| Engine | ||
| 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Elevation (7 styles)
| Style | ||||||
|---|---|---|---|---|---|---|
| 4WD Double Cab 147" Elevation w/3VL | 4WD Crew Cab 147" Elevation w/3VL | 4WD Crew Cab 157" Elevation | 2WD Double Cab 147" Elevation | 4WD Double Cab 147" Elevation w/3SB | 4WD Crew Cab 147" Elevation w/3SB | 2WD Crew Cab 147" Elevation |
| Inventory price | ||||||
| Starting at $44,600 | Starting at $47,200 | Starting at $49,300 | Starting at $43,100 | Starting at $46,400 | Starting at $49,000 | Starting at $45,700 |
| Combined MPG | ||||||
| 19 | 19 | 19 | 21 | 19 | 19 | 21 |
| Engine | ||||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
SLE (5 styles)
| Style | ||||
|---|---|---|---|---|
| 4WD Crew Cab 147" SLE | 4WD Crew Cab 157" SLE | 2WD Double Cab 147" SLE | 2WD Crew Cab 147" SLE | 4WD Double Cab 147" SLE |
| Inventory price | ||||
| Starting at $47,100 | Starting at $47,400 | Starting at $41,400 | Starting at $43,800 | Starting at $44,700 |
| Combined MPG | ||||
| 19 | 19 | 21 | 21 | 19 |
| Engine | ||||
| 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
SLT (3 styles)
| Style | ||
|---|---|---|
| 4WD Crew Cab 147" SLT | 2WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT |
| Inventory price | ||
| Starting at $50,800 | Starting at $47,500 | Starting at $51,100 |
| Combined MPG | ||
| 18 | 17 | 18 |
| Engine | ||
| 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 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.
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
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2021 GMC Sierra 1500 Trucks in O Fallon, MO
6 Great Deals out of 26 listings starting at $26,990
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2021 GMC Sierra 1500 Trucks in Maryland Heights, MO
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5 Great Deals out of 29 listings starting at $28,985
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6 Great Deals out of 22 listings starting at $26,990
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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.
