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Used
2021 GMC Sierra 3500 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 3500 AT4
Vehicle information
Features
Reviews
Sales associate Erik was insightful and had good follow
Sales associate Erik was insightful and had good follow through. There was an hour wait for dianci g but they worked with my situation and the deal got done!
Truck is a Solid vehicle overall.
Has a really Big feel to it. I currently use mine to pull gooseneck trailer. I haven't had a load yet that I couldn't pull. The downsides to this truck is to me I feel it could get better fuel mileage. Also I had trouble with #4 injector...dealership replaced it. Now my AC doesn't work all the time. Although it sounds like it's blowing it isn't.
Used
2021 GMC Sierra 3500 AT4
Vehicle information
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Reviews
my experience with Paul was great, we test drove the 2020
my experience with Paul was great, we test drove the 2020 Mazda CX9 very nice vehicle, it was a very nice ride & Paul was very informative.
Love it.
I love the new features this truck offers. I would highly recommend this truck if your looking for a Diesel. I provides all the features and benefits you would want.
Certified
2021 GMC Sierra 3500 Denali
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Features
Reviews
Cameron came to house yesterday for a mobile service, as
Cameron came to house yesterday for a mobile service, as always he was a very knowledgeable professional. He explained what was needed and most important WHY!!! Parks Ford Mobile Service is a great addition to their service dept. I would also note that Donna back in the dealership is great keeping you informed on your appointment and on the day of the appointment the ETA.
Used
2021 GMC Sierra 3500 AT4
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Reviews
All my vehicles have been purchased from Henry Brown GMC
All my vehicles have been purchased from Henry Brown GMC for past 15 years. I have always enjoyed the professionalism and friendliness from the staff.
Used
2021 GMC Sierra 3500 SLE
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Reviews
Juan was very helpful and was able to get my car serviced
Juan was very helpful and was able to get my car serviced quickly. The service department always goes above and beyond. Thank you to John for scheduling me last minute before a trip.
Used
2021 GMC Sierra 3500 SLE
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Features
Reviews
It was great working with David K.
It was great working with David K. He had a ton of information and new the santa fe and it's features very well. No pressure sales from him.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Very pleasant experience at Vera car dealership it was my
Very pleasant experience at Vera car dealership it was my first time there. Every one was so nice to us Mr.Kamel the saleperson was so friendly with us he made us fill at home it was nice doing business with him a very pleasant person to talk to my time at Vera Buick GMC was GREAT.
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
They were very courteous and helpful!
They were very courteous and helpful! They also gave me a great deal! I highly recommend!
Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
My experience was great.
My experience was great. The problem with my car was explained in terms I understood. Nick was very friendly and kind. I still need to get a new battery but right now I can't afford it.
Certified
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I love your team, they are very professional and nice,
I love your team, they are very professional and nice, the dealer Mr. Tommy TSE help me a lot show me everything and taught me what I have to know, I appreciate what he did for me, thanks a lot.
Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Just to let you guys know we’re very pleased with the
Just to let you guys know we’re very pleased with the F150 Larry. We got with 214. Everybody was so courteous and kind and helped us out to get this vehicle. I appreciate it very much. I tried to make out a survey and I couldn’t get on it so I’m just letting you know this way thank you very much. I will try to get you some more customers.
Used
2021 GMC Sierra 3500 Denali
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Reviews
Great deal from Coulter
Coulter dealerships have been very good to me with the vehicles I have bought from them in the past. Coulter Cadillac was the best experience yet. I got a great deal and I know it! The deal was mostly done on line and did not change the day the xt6 was picked up. This is not the usual dealership experience. No wonder Coulter has been around for 100 years. Thank you very much, Steve and Nancy
Used
2021 GMC Sierra 3500 Denali
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Reviews
This dealership doesn’t negotiate price.
This dealership doesn’t negotiate price. I randomly walked in one day and Michel helped me out, he sent me different car options over a few days and ultimately helped me purchase a great car. It was a quick and easy process which I appreciated and also a no pressure environment which was nice.
Used
2021 GMC Sierra 3500 Denali
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Features
Reviews
Ryan is the best!
Ryan is the best! The entire Jeep team is always so knowledgeable and helpful.I recommend Jeep and Jeep Services to everyone. So grateful for them. And I love my Jeep!
Used
2021 GMC Sierra 3500 Denali
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Reviews
In a world of shady dealers and high prices Buerkle sales
In a world of shady dealers and high prices Buerkle sales is an oasis. They take care of their customers instead of wasting their time.
Certified
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I had an interaction with Mike regarding a Toyota Avalon.
I had an interaction with Mike regarding a Toyota Avalon. Mike was very friendly and knowledgeable about the car. I was impressed with the dealership. Unfortunately, the vehicle wasn't what I was looking gor.
Used
2021 GMC Sierra 3500 SLE
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Reviews
Excellent service and work!
Excellent service and work! Highly recommended by so many people including myself. Very knowledgeable and professional from the parts department, service department and the certified mechanics!
Used
2021 GMC Sierra 3500 AT4
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Reviews
I rarely take the time to write reviews, but I felt
I rarely take the time to write reviews, but I felt compelled to after our experience with Rene at Audi San Juan. From the start, Rene was outstanding. My wife was purchasing an Audi Q8 e-tron from out of state, and he made the entire process seamless. He was incredibly patient, answering all of our questions and making sure we had all the information we needed. To say Rene is exceptional is an understatement. If you're looking for someone who genuinely cares and will help you every step of the way, look no further than Rene Gomez at Audi San Juan. He's been an absolute pleasure to work with, and I can’t recommend him highly enough!
Used
2021 GMC Sierra 3500 Denali
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Reviews
They went above and beyond to get me the vehicle I wanted
They went above and beyond to get me the vehicle I wanted I will do business with them again thank you Chase!!
Used
2021 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Initially my wife and I had just planned on purchasing a
Initially my wife and I had just planned on purchasing a car for her since the lease on her current vehicle was due to expire. Chris Warr was the sales consultant who helped us when we arrived to test drive a few different models. My wife wasn?t really sure if she wanted an SUv or a truck. Chris was patient and friendly. He made us feel comfortable and not rushed to make a decision. He even went as far to take us to see a model that was being displayed for a car show so my wife could see all of her options. Ultimately she purchased a 2026 Terrain AT4. Every one we encountered was friendly, helpful and answered our questions and made the process of purchasing a car simple and as stress free as possible. I would like to mention Ben Gallegos for helping us with the additional accessories my wife wanted. Marian Ciubotaru for walking us through the financial side, he answered all of our questions and took the time to make sure we were clear on the paperwork and pricing. Frank Pereira was our initial contact when we scheduled our appointment. He was friendly, listened to our needs and stayed in contact through the entire process. We are definitely happy with our interactions, so much that I had an appointment the following day to purchase a Ford Bronco for myself and ended up canceling my appointment and purchasing a Canyon AT4X the following day. So 2 car sales in 2 days. All due to the treatment we received and to be clear feeling comfortable and not being bombarded with a heavy hand to make a decision until we were ready. We also believe we received a fair deal. In addition, I was not happy with the rims on the truck which was almost a deal breaker for me. Purely because I had a vision of what I wanted. Ben, Frank and Chris worked to find me options and Ben found the exact rims I was looking to purchase. We are taking both cars in on Friday for the accessories and they even made sure we have a car to drive while our new cars are being completed. We are grateful and not only will we be buyers in the future we will be sure to share our experience with our friends and family.
GMC Sierra 3500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 3500 | $84,716 | 9 Good deals |
| 2025 GMC Sierra 3500 | $72,110 | 26 Great deals |
| 2024 GMC Sierra 3500 | $69,134 | 43 Great deals |
| 2023 GMC Sierra 3500 | $57,241 | 79 Great deals |
| 2022 GMC Sierra 3500 | $55,814 | 61 Great deals |
| 2020 GMC Sierra 3500 | $50,633 | 21 Great deals |
| 2019 GMC Sierra 3500 | $44,636 | 9 Great deals |
| 2018 GMC Sierra 3500 | $41,918 | 50 Good deals |
| 2017 GMC Sierra 3500 | $39,995 | 29 Good deals |
About the 2021 GMC Sierra 3500
Base shown (base trim).
- Seating
- 2
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 0
- Transmission
- 6-Speed A/T
- Engine
- 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
How much does the 2021 GMC Sierra 3500 cost?
The 2021 GMC Sierra 3500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 3500 is $52,493, with pricing starting at $26,673.
Is the 2021 GMC Sierra 3500 reliable?
The 2021 GMC Sierra 3500 has an average reliability rating of 4 out of 5 according to Cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 Sierra 3500 owners.
Is the 2021 GMC Sierra 3500 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 3500.
- Comfort 4.5
- Interior 4.5
- Performance 5.0
- Value 4.0
- Exterior 4.5
- Reliability 4.0
100% of drivers recommend this car
- Comfort 4.5
- Interior 4.5
- Performance 5.0
- Value 4.0
- Exterior 4.5
- Reliability 4.0
AT4 (2 styles)
| Style | |
|---|---|
| 4WD Crew Cab 172" AT4 | 4WD Crew Cab 159" AT4 |
| Inventory price | |
| Starting at $60,500 | Starting at $60,300 |
| Combined MPG | |
| 0 | 0 |
| Engine | |
| 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Base (8 styles)
| Style | |||||||
|---|---|---|---|---|---|---|---|
| 2WD Double Cab 162" | 4WD Double Cab 162" | 4WD Crew Cab 172" | 4WD Crew Cab 159" | 2WD Crew Cab 159" | 2WD Crew Cab 172" | 4WD Reg Cab 142" | 2WD Reg Cab 142" |
| Inventory price | |||||||
| Starting at $40,200 | Starting at $43,000 | Starting at $44,800 | Starting at $44,600 | Starting at $41,800 | Starting at $42,000 | Starting at $40,200 | Starting at $37,400 |
| Combined MPG | |||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Engine | |||||||
| 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
Denali (2 styles)
| Style | |
|---|---|
| 4WD Crew Cab 159" Denali | 4WD Crew Cab 172" Denali |
| Inventory price | |
| Starting at $66,700 | Starting at $66,900 |
| Combined MPG | |
| 0 | 0 |
| Engine | |
| 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLE (8 styles)
| Style | |||||||
|---|---|---|---|---|---|---|---|
| 2WD Double Cab 162" SLE | 4WD Double Cab 162" SLE | 4WD Reg Cab 142" SLE | 2WD Reg Cab 142" SLE | 4WD Crew Cab 159" SLE | 4WD Crew Cab 172" SLE | 2WD Crew Cab 159" SLE | 2WD Crew Cab 172" SLE |
| Inventory price | |||||||
| Starting at $45,000 | Starting at $47,800 | Starting at $45,600 | Starting at $42,800 | Starting at $49,400 | Starting at $49,600 | Starting at $46,600 | Starting at $46,800 |
| Combined MPG | |||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Engine | |||||||
| 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) |
SLT (4 styles)
| Style | |||
|---|---|---|---|
| 4WD Crew Cab 172" SLT | 2WD Crew Cab 159" SLT | 2WD Crew Cab 172" SLT | 4WD Crew Cab 159" SLT |
| Inventory price | |||
| Starting at $57,600 | Starting at $54,600 | Starting at $54,800 | Starting at $57,400 |
| Combined MPG | |||
| 0 | 0 | 0 | 0 |
| Engine | |||
| 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) | 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel 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 3500
Compare the 2021 GMC Sierra 3500
GMC Sierra 3500 trims
-
GMC Sierra 3500 2021 Denali
11 Great Deals out of 82 listings starting at $39,995
-
GMC Sierra 3500 2021 AT4
6 Great Deals out of 22 listings starting at $39,000
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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.
