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Used
2021 GMC Sierra 1500 trucks
for sale
near
Greendale, WI
- 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 Denali Ultimate
Vehicle information
Features
Reviews
Jason Archimede came to us as soon as we walked in
Jason Archimede came to us as soon as we walked in answered all our questions and after explaining what we were interested in quickly found us the car we were wanting within our budget. He kept us comfortable and entertained our toddler making it as smooth as possible and made sure we were 100% satisfied and setup before driving off the lot
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 AT4
Vehicle information
Features
Reviews
I was greeted at the door by Mr.
I was greeted at the door by Mr.Harris he was very pleasant and answered any questions I had. He made the process easy for me as a first time buyer and qualified me for the car I want it I highly recommend going to this dealership for your vehicle purchase and ask for Mr. Harris The whole staff was just amazing I highly recommend Gordie Boucher for your vehicle purchase don’t think about it just make it your one stop only stop.
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 Elevation
Vehicle information
Features
Reviews
Dealt with Ryan in Sales and Jeana in financing.
Dealt with Ryan in Sales and Jeana in financing. Two of the best people I've ever worked with. Ryan went well above and beyond trying to make my experience pleasurable. He is the hardest, most sincere salesperson I've ever had the privilege of dealing with. I wish all sales people had his character and work ethic! Jeana was an absolute sweetheart in financial. She didn't try to sell me anything extra, just the basics to keep me covered. You can tell she loves just helping people get only what they need. High quality character and an absolute pleasure to "work" with!
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 Denali
Vehicle information
Features
Reviews
I purchased a new Jeep Wrangler Rubicon X from Uptown.
I purchased a new Jeep Wrangler Rubicon X from Uptown. The entire experience was incredibly positive. There was no pressure. My trade in value was fair. Overall I was very pleased with my purchase and the process of buying the vehicle.
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 AT4
Vehicle information
Features
Reviews
Great customer service
Every one I met here were extremely nice and very welcoming, they answered every question I had and I would definitely recommend this place for vehicle shopping.
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
Go see Maurice....he has SUPER POWERS!
If Maurice were a super hero, his super power would be making great deals happen. He was friendly, helpful, informed (and don't even get me started on his accent)! I never once felt pushed or pressured. I am 100% convinced that the great deal I got would not have happened without Maurice. Aside from that, it is a rare salesman who makes you feel like he is really ON YOUR SIDE. I'll keep it short - he's earned my trust and that is the ultimate compliment I can give.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I arrived late to pick up my vehicle.
I arrived late to pick up my vehicle. Fortunately one of the Service writers noticed my arrival as he was leaving for the night. He came back to the dealership and secured my vehicle and billing. Great service.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
M. Decker is a great Service Rep. very knowledgeable and
M. Decker is a great Service Rep. very knowledgeable and honest and keeps you informed of what is being done on your car and if anything needs to be fixed






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
The team didn't stop trying until they made my dreams
The team didn't stop trying until they made my dreams come true with my new purchase! I was also able to trade in another pre-owned vehicle, which my daughter loves. Thanks guys!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
The Boucher team has always made us feel like family
The Boucher team has always made us feel like family whenever we do business with them. Mike Hanson, Scott Foote, and Mike Garrett all went above and beyond to make sure we were taken care of. 5+ star service. We will be a life long customer for sure!






GMC Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I want to say thanks for the hard work getting me into
I want to say thanks for the hard work getting me into the new car.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
El mejor servicio Van Horn latino
Best service love the service and sales reps my favorite April and roger. Will be back again and again! Thank you. See you all soon






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
If you going to purchase a new vehicle.
If you going to purchase a new vehicle. Please ask for Tristen Cairo at Gordie Boucher. He is outstanding! I have purchased 6 cars from him over the years. He works for you! He listens and. Gives you 200% of his dedication to you. Ted Poulos






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
ICourteous, explained what needed to be fixed and why.
ICourteous, explained what needed to be fixed and why. Great customer service!!! I have all service completed here and they are consistently courteous.






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
I worked with Isaiah, he was awesome.
I worked with Isaiah, he was awesome. When I went to trade my car in. I wasn’t totally sure I would walk about with anything I wanted. But he definitely worked hard in making me leave happy! I love my Buick.





Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Found vehicle through the website, called Boucher and
Found vehicle through the website, called Boucher and made an appointment to come out and take a look the same day. Was not pressured since I mentioned I had just started looking. Worked out the deal with some add ons that were needed, got questions asked and feel I had a very positive experience.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Very Happy
Went in to test drive a Mazda CX 7 and Mourice was the sales associate we worked with. He had the car ready to go for us. He was also very helpful and was the first salesman I have ever liked. He was extremely kind and caring. I would recommend this dealership and Mourice 100%.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I like how Omar the seller was helping me out on getting
I like how Omar the seller was helping me out on getting the perfect truck for me thanks to Omar because I?m very happy with my new truck






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
HANDLED WITH CARE.
Impeccable Serice Jeremy Simonson, Brandon Gilsch were incredible. They handles my issue with the utmost professionalism and speed. They took the time to investigate and take care of my issue.
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Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 AT4
Vehicle information
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Used
2021 GMC Sierra 1500 Elevation
Vehicle information
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Certified
2021 GMC Sierra 1500 Denali
Vehicle information
Features






GMC Certified
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $50,695 | |
2025 GMC Sierra 1500 | $36,199 | 1 Good deal |
2024 GMC Sierra 1500 | $37,286 | 31 Good deals |
2023 GMC Sierra 1500 | $35,000 | 30 Good deals |
2022 GMC Sierra 1500 | $35,487 | 16 Good 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 $38,743, with pricing starting at $15,480.
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.
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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.
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