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Used
2021 GMC Sierra 1500 SLE trucks
for sale
near me
- 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 SLE
Vehicle information
Features
Reviews
They were very accommodating.
They were very accommodating. Knowledgeable and willing to share information on the car. Very friendly and walked you through the steps easily.
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 SLE
Vehicle information
Features
Reviews
From start to finish, Gio made things feel simple.
From start to finish, Gio made things feel simple. He stayed patient, answered all my questions, and made sure I was good with everything.
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 SLE
Vehicle information
Features
Reviews
Van Horn is a Wow!
I dealt with Van Horn on an SUV for about a week. The vibe was so good that I ended up driving 900 miles on a Tuesday to make a purchase with them. I buy a lot of vehicles and I have never seen people stand behind their vehicles with such customer care and loyalty. They will earn your businesses.Very, very impressed and happy with their first class service and amazing warranty. I highly recommend Van Horn Chevrolet and their sales team.
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
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 SLE
Vehicle information
Features
Reviews
Great Customer Service and Program
Love the personality of the reps and they are always eager to help! They don't push you into buying more than your original budget and won't bother you about it! They also will let u browse the lot on you own, and all there cars are unlocked! I absolutely love there transfer program where they will transfer vehicles to your local stores without an obligation, and many transfers are free! Only complaint about Carmax is that I feel the cars are a bit overpriced, but it's worth it in the end for there customer service!
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 SLE
Vehicle information
Features
Reviews
Service
Excellent staff from service center to owner, we have nothing but praise for this dealership! ??????????
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Me and my wife are moving from Buell Idaho to Astoria
Me and my wife are moving from Buell Idaho to Astoria Oregon and we are driving separate Cars I am in a 2019 gmc Yukon and she is in a 2015 subaru outback..the gmc broke down on highway in middle of the night and we use the subaru to get to a hotel..And with are luck in the morning the subaru had a check engine light and was runned ruf.The subaru team got use inb with in 30 mins and fixed the issue before arer GMC got there on tow truck.Tuck was in with in a hour and its problem was also corrected.. all in all in and out with 2 unscheduled vehicles in less then 3 hours and we were back on the road.. Thank You Tonkin of the gorge..
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Service was good.
Service was good. On time and completed when they said it would be. Now this15 minimum is stupid.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
They did most stuff right.
They did most stuff right. They were pretty straight forward and to the point with minimal xxxxxx business. The one notable exception was that they lost the second key. It is pretty normal except for a car dealer to lose a key except that they told us they had it. When they figured out they lost the key instead of doing the right thing they told us they were not paying for the key. They told us we could just not buy the car as a solution if we did not like it. So they were rotten about the key.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Best car buying experience
By far the best experience I've ever had at a dealership. No pressure to buy. Actually told me I could test drive a few to make sure I get what I truly needed. Daniel was amazing very patient while we waited for insurance to switch. Very through goin over contract payment ect to make sure I could afford it and not working just to pay my car note. Washed it filled it up w fuel before he'd even let me take it. That alone says alot being it an explorer and gas to fill it was a bill I'm sure. They treated us like family went above and beyond... I highly recommend performance auto if your looking for quality..
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Found a Toyota Tacoma at Rickie’s Auto LLC and it was
Found a Toyota Tacoma at Rickie’s Auto LLC and it was perfect for me! I was warmly greeted by Terra and Lexie when I arrived for a test drive. They are very friendly and professional. The whole experience was incredibly comfortable, and that’s saying a lot for an older woman on her own. I highly recommend this dealership!
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Completely Satisfied.
Let’s start off by saying I really believe in buying locally. I have had the most pleasant buying experience from Thompson motors. By far the most professional in Oneonta. They have late model used cars at very fair prices. From today going forward I will always purchase from them. I have purchased elsewhere before and now I know what I have been missing. They will tell you the truth and help you with your buying decision. There was none of this running back and forth to the sales manager for approval. If you deal straight with them they will deal straight with you. I am sure they have a car or truck for anyone.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
I had such a fantastic experience at Dante Auto!
I had such a fantastic experience at Dante Auto! I was buying a car for my sweet Grandson who is graduating in May! Never thought this day would come, I remember when he was a little tot running around. I was amazed by the customer service, especially with Mark Dante (give him a raise LOL) he was so very helpful and seemed to really care about his customers. I will be recommending Dante Auto to family and friends. Thanks again!
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
I had an incredible experience at [Dealership Name]!
I had an incredible experience at [Dealership Name]! From the moment I walked in, the staff was friendly, honest, and knowledgeable. They took the time to understand what I was looking for and helped me find the perfect car within my budget—no pressure, no gimmicks. The vehicle was clean, well-maintained, and exactly as advertised. The entire process was smooth and stress-free, and they even followed up afterward to make sure I was happy with my purchase. I highly recommend this dealership to anyone looking for a reliable used car and top-notch customer service!
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Great dealership in working with Juve and Chris.
Great dealership in working with Juve and Chris. They were highly professional and personable in making arrangements to buy my Lexus. It was an excellent car and they recognized its value. Thank you Juve and Chris for the ease of this transaction!
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Stella( my STI) was in for service work and the service
Stella( my STI) was in for service work and the service team (Shawn, Tim, Kira, Brandon and Alexis always take great care of you when you’re in service. They treat you like family and give you honest feedback without trying to sell extra work.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Very honest, seamless transaction.
Very honest, seamless transaction. No funny business. Will check back first on my next purchase.
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Thank you Joe…you made the whole transaction for my car
Thank you Joe…you made the whole transaction for my car comfortable and friendly. I was happy with the way you explained things clearly and broke down areas that were a little confusing and/or hard to comprehend. It was a pleasure meeting you. God bless you and your family. Again, thank you.😊
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
Excellent salesman, Joe Hanks, smooth process in the car
Excellent salesman, Joe Hanks, smooth process in the car experience highly recommend! Up front no pressure, went above and beyond. Love our new car, Definitely make Sundance your first stop for a new car!
Used
2021 GMC Sierra 1500 SLE
Vehicle information
Features
Reviews
I really appreciate Ricardo Myers no pressure approach
I really appreciate Ricardo Myers no pressure approach and his dedication to make sure I was happy.
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 SLE | 5 Good deals | |
| 2025 GMC Sierra 1500 SLE | $43,980 | 8 Great deals |
| 2024 GMC Sierra 1500 SLE | $39,679 | 35 Great deals |
| 2023 GMC Sierra 1500 SLE | $36,035 | 37 Great deals |
| 2022 GMC Sierra 1500 SLE | $33,267 | 16 Great deals |
| 2020 GMC Sierra 1500 SLE | $27,518 | 23 Great deals |
| 2019 GMC Sierra 1500 SLE | $25,715 | 27 Great deals |
| 2018 GMC Sierra 1500 SLE | $23,572 | 26 Great deals |
| 2017 GMC Sierra 1500 SLE | $20,987 | 20 Great deals |
About the 2021 GMC Sierra 1500 SLE
SLE shown.
- Seating
- 6
- Door count
- 4
- Drivetrain
- Rear Wheel Drive
- Combined MPG
- 21
- Transmission
- 10-Speed A/T
- Engine
- 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel)
How much does the 2021 GMC Sierra 1500 SLE cost?
The 2021 GMC Sierra 1500 SLE price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 SLE is $29,926, with pricing starting at $16,699.
What is the MPG of the 2021 GMC Sierra 1500 SLE?
The 2021 GMC Sierra 1500 SLE offers up to 20 MPG in city driving and 23 MPG on the highway for a combined rating of 21 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 options, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500 SLE?
The 2021 GMC Sierra 1500 SLE compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 1500 SLE 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.
60% of drivers recommend this car
- Comfort
- 4.2
- Interior
- 4.2
- Performance
- 3.8
- Value
- 3.6
- Exterior
- 4.3
- Reliability
- 3.5
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) |
*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.
GMC Sierra 1500 trims
-
GMC Sierra 1500 2021 AT4
108 Great Deals out of 507 listings starting at $21,995
-
GMC Sierra 1500 2021 SLT
90 Great Deals out of 443 listings starting at $16,000
-
GMC Sierra 1500 2021 Denali
76 Great Deals out of 388 listings starting at $27,995
-
GMC Sierra 1500 2021 Elevation
75 Great Deals out of 380 listings starting at $22,995
-
GMC Sierra 1500 2021 Base
12 Great Deals out of 46 listings starting at $18,495
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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.