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Used
2021 GMC Sierra 1500 trucks
for sale
near
Whitefish Bay, 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 AT4
Vehicle information
Features
Reviews
I had a nice experience at this dealership.
I had a nice experience at this dealership. Danny was very helpful and didn’t make me feel pressured. Leo did my paperwork when the finance department was busy!
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 Ultimate
Vehicle information
Features
Reviews
I had a great experience working with Jason Archimede
I had a great experience working with Jason Archimede from start to finish. I wanted to upgrade from a sedan to a 3rd row SUV and he took the time to ask questions and listen to what was important to me in a vehicle. I did not have a specific vehicle in mind when I began my search so I appreciate all his time, effort, and flexibility to help me find what was right for me. He is very knowledgeable and I absolutely recommend working with Jason. I have nothing but great things to say about Jason and the staff at Boucher Nissan I met among the way. Thanks Jason!
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
Best dealership in Milwaukee
Tracy the dealer and Jeremy in financing provided excellent professional Service and I highly recommend both of them when you are looking for a new or used car. I like to compliment Jeremy on going above and beyond what was expected. Thank you Jeremy your lifetime customer. I would also like to thank Sarah in the service department for always accommodating me.
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
el mejor lugar para comprar autos y crear tu credi
Excelente dealer para adquirir un automóvil, muy buen trato, y sobre todo disponibilidad para brindarnos un buen servicio Y los autos en muy buen estado además que que te ayudan mucho para poder construir tu crédito
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 Denali
Vehicle information
Features
Reviews
UPTOWN CHEVROLET
Good service. Great Service Manager! Always pleasant!
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 AT4
Vehicle information
Features
Reviews
Went in for oil change and tire rotation Prince took care
Went in for oil change and tire rotation Prince took care of it in a very friendly and professional way. I even got complementary car wash. Very happy customer! Thank you!!






Used
2021 GMC Sierra 1500 Elevation
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.





Used
2021 GMC Sierra 1500 Elevation
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






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Shelby did a wonderful job getting us into not one car
Shelby did a wonderful job getting us into not one car but two cars that were exactly what we wanted and also met our needs. He is extremely professional and a personable person at the same time. Our experience at Frank Boucher Kia Volkswagen of Racine has been a pleasure. We love our new KIA Soul and KIA Sorento!






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Isaiah was a big help with purchasing my car and would
Isaiah was a big help with purchasing my car and would recommend kunes to others looking to buy






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Fantastic service
They have great service and the people are so understanding. They go out of the way to make you feel comfortable and they are open to suggestions and they listen.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Our salesperson, Elijah, did a great job.
Our salesperson, Elijah, did a great job. When picking up our purchase, he spent as much time with us on a used Jeep GC as a new one. Demonstrating the vehicle features and connecting our phones to uConnect. Patiently and without being overbearing, I was impressed and would recommend him and the dealership.






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Very helpful with car purchase as well as car
Very helpful with car purchase as well as car service/maintenance. Tim was a great help.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
This Car Dealership is a Wheel-y Good Time
This Car Dealership is a Wheel-y Good Time -- and So's Their Salesman Brandon! I recently had the pleasure of working with Brandon at the car dealership and let me tell you, this guy is the real deal! He's got more car knowledge in his pinky finger than most people have in their entire brain. Plus, he's got the charm and friendliness of a golden retriever. If you're in the market for a new ride, skip the other guys and hit up Brandon at this dealership. He'll treat you like a dear friend (and maybe even sneak in some car jokes).






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
I always bring my car here for service- they are honest
I always bring my car here for service- they are honest and good at doing the work that needs to be done






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 SLT
Vehicle information
Features
Reviews
Positive experience
No pressure car buying experience with Chad Braeger. He answered all our questions that we had. When I went back a week later to pick up the vehicle from having accessories installed, Chad met me at the door and answered any follow up questions I had with the vehicle.






Used
2021 GMC Sierra 1500 Elevation
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 AT4
Vehicle information
Features
Reviews
We just leased our 12th and 13th Honda from Zeigler Honda
We just leased our 12th and 13th Honda from Zeigler Honda and wouldn’t go anywhere else! Salesman Josh and Finance manager Nick are simply the best to work with! 2 leased car deals completed and cars delivered in less than 24 hours with a great deal too! Thanks guys!
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Sales staff and our salesman Nick was very professional
Sales staff and our salesman Nick was very professional and accommodating to my wife and I for our specific situation and worked out a deal that we were very thankful for! Highly recommended dealer and we are sure we will do business with them in the future for sure!
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Used
2021 GMC Sierra 1500 AT4
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GMC Certified
2021 GMC Sierra 1500 SLT
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Used
2021 GMC Sierra 1500 Elevation
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Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
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GMC Certified
2021 GMC Sierra 1500 Elevation
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Used
2021 GMC Sierra 1500 SLT
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Used
2021 GMC Sierra 1500 AT4
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Used
2021 GMC Sierra 1500 Denali
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Used
2021 GMC Sierra 1500 Elevation
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $49,819 | |
2025 GMC Sierra 1500 | $36,199 | |
2024 GMC Sierra 1500 | $36,999 | 5 Great deals |
2023 GMC Sierra 1500 | $34,500 | 27 Good deals |
2022 GMC Sierra 1500 | $34,799 | 18 Good deals |
2020 GMC Sierra 1500 | $26,688 | 15 Good deals |
2019 GMC Sierra 1500 | $27,780 | 9 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 $38,282, with pricing starting at $14,980.
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.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 compares to and/or competes against the following vehicles:
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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2021 GMC Sierra 1500 by body style
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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.