Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
2021 GMC Sierra 1500 trucks
for sale
near
Waukesha, 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
Used
2021 GMC Sierra 1500 SLT
Used
2021 GMC Sierra 1500 Elevation
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!
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 SLE
Vehicle information
Features
Reviews
Understanding folks.
Understanding folks. Willing to work with you. Answered any and all questions. Everyone was friendly
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
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
Overall pleasant experience.
Overall pleasant experience. I had some issues arise in the purchasing process, but they were all addressed timely and satisfactorily. Nice people to deal with.
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
My experience with service n in buying a new car was
My experience with service n in buying a new car was superb. Everyone I met was friendly and helpful. Thank you to all
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
I found Phil Aleio to be very responsive to questions and
I found Phil Aleio to be very responsive to questions and Kaifer Zulesdorf especially enjoyable to work with. I trust him and plan to trade cars back and purchase future special vehicles. Great experience from a Wisconsin dealership!
Used
2021 GMC Sierra 1500 AT4
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.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Excellent dealership.
Excellent dealership. That gave me an excellent car Buying experience from the beginning to the end. Things started out with a phone call to George who listened very attentively and matched me up perfectly to a vehicle that we came to an agreement on. Next up was Josh, my salesperson he did such an awesome job, getting me in and out of the dealership with everything that I needed. And finally, the finance manager Who was just as professional And attentive the whole experience felt like I was dealing with family. I couldn't have asked for better treatment. And a better group of gentlemen to handle my car buying experience and make it as seamless as possible. Everything was as promised over and beyond. I am very pleased with the customer service everyone took their time with me, making sure my needs were met. And that I was able to get everything that was agreed upon. These guys really did it, right? I highly recommend Ziegler Honda to anyone and everyone and I will be purchasing my next vehicles from here also. Oh, yeah.And the vehicle was just as awesome as the staff.Thanks again guys
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Buying a car is stressful overall but Mr.
Buying a car is stressful overall but Mr. Lee McGee made it an easy and fun experience this time around for me. He was very helpful, going above and beyond, trying to do what he can to make things easier for me. He has a lot of knowledge about vehicles and how to go about saving money! If you’re looking to buy a car at Boucher, Lee is your guy!
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Great until....
The sales team did a good job, Dan did a great job showing us vehicles and was knowledgeable. They went above and beyond to find us a vehicle from another dealer after the car we selected was sold the same day. The unpleasant part was working with the finance guy, who overall seemed like a nice guy, but was unrelenting, almost obnoxious on pushing for the service contracts, after multiple "no's". My wife and I were being patient and considerate, but it did leave a bad taste, on what was a pretty positive experience. Ashley was also very helpful and prompt communicating and Justin was always proffesional. We would return, but not put up with the stuff outlined above.
Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
They really made this a smooth experience.
They really made this a smooth experience. Especially when it came to the actual purchase of the vehicle. We dealt with Nick as our sales person and he was great at communicating with us and insuring any needs or concerns were addressed.
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Very prompt response.
Very prompt response. Gave me all the details I needed. Follow-up has been very good
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 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 SLT
Vehicle information
Features
Reviews
I received excellent service on both our Honda and Subaru
I received excellent service on both our Honda and Subaru coordinated and explained by Tim in the service department Thanks
Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Nick and Joe took care of my Honda Pilot purchase with a
Nick and Joe took care of my Honda Pilot purchase with a great deal 👌, Thank you guys!!!!
Used
2021 GMC Sierra 1500 Elevation
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!
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
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.
-
Prev - 1
- 2
-
Next
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $66,691 | |
| 2025 GMC Sierra 1500 | $55,592 | 4 Good deals |
| 2024 GMC Sierra 1500 | $60,536 | 20 Good deals |
| 2023 GMC Sierra 1500 | $49,617 | 38 Good deals |
| 2022 GMC Sierra 1500 | $45,243 | 25 Good deals |
| 2020 GMC Sierra 1500 | $34,809 | 6 Good deals |
| 2019 GMC Sierra 1500 | $34,027 | 4 Good deals |
| 2018 GMC Sierra 1500 | $27,971 | 8 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 $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.
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.
Similar Cars
-
Chevrolet Silverado 1500 for sale
6 Great Deals out of 44 listings starting at $25,985
-
Ford F-150 for sale
6 Great Deals out of 42 listings starting at $28,495
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
2021 GMC Sierra 1500 by city
-
2021 GMC Sierra 1500 in Pewaukee, WI
4 Great Deals out of 26 listings starting at $29,967
-
2021 GMC Sierra 1500 in New Berlin, WI
4 Great Deals out of 25 listings starting at $29,992
-
2021 GMC Sierra 1500 in Wales, WI
4 Great Deals out of 21 listings starting at $29,967
-
2021 GMC Sierra 1500 in Brookfield, WI
3 Great Deals out of 26 listings starting at $29,992
-
2021 GMC Sierra 1500 in Big Bend, WI
5 Great Deals out of 25 listings starting at $29,992
-
2021 GMC Sierra 1500 in Hartland, WI
4 Great Deals out of 20 listings starting at $29,967
-
2021 GMC Sierra 1500 in Elm Grove, WI
3 Great Deals out of 26 listings starting at $29,992
-
2021 GMC Sierra 1500 in Delafield, WI
4 Great Deals out of 20 listings starting at $29,967
-
2021 GMC Sierra 1500 in North Prairie, WI
4 Great Deals out of 22 listings starting at $29,967
-
2021 GMC Sierra 1500 in Nashotah, WI
4 Great Deals out of 20 listings starting at $29,967
-
2021 GMC Sierra 1500 in Muskego, WI
5 Great Deals out of 23 listings starting at $29,992
-
2021 GMC Sierra 1500 in Chenequa, WI
4 Great Deals out of 20 listings starting at $29,967
2021 GMC Sierra 1500 by body style
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
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.
