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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.






Certified
2021 GMC Sierra 3500 AT4
Vehicle information
Features
Reviews
Very nice dealership
Josh Nussbaum was my sales person very nice and pleasant after I found the truck I wanted he made sure everything was easy and simple for me. He also made sure Fordpass was all set up and ready before I left.
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 Denali
Vehicle information
Features
Reviews
STAR CHEVROLET is the BEST!
The sales staff at STAR is awesome! Our salesman, Robert Easterling, made sure we had a great experience, from beginning to end! We left extremely satisfied with our purchase, and was pleased with the ease of the buying experience! Kudos to both STAR and Robert!!
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.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features






GMC Certified
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
During my recent vacation to Reno, I had the pleasure of
During my recent vacation to Reno, I had the pleasure of visiting the local Cadillac dealership, Corwin Cadillac, because I came across a vehicle on their website that I wanted to see in person, as it had the features and was the color I was interested in. I must say it was a delightful experience from the moment I walked in the door and was greeted by their team. Although I didn't end up purchasing a vehicle, my interaction with the salesman, Beau, was truly exceptional. Beau greeted me with a warm smile and a genuine enthusiasm for the Cadillac lineup. He took the time to listen to my needs and preferences, providing insightful information without any pressure to buy. The entire staff at the dealership was friendly and welcoming, so much so that I felt compelled to write a review, despite not actually purchasing a vehicle here. If I lived in the Reno area I would absolutely come to this dealership for my purchase because of Beau's outstanding service and the dealership's positive and honest approach. I highly recommend anyone in the Reno area looking for a Cadillac, Buick or GMC vehicle to visit this dealership and ask for Beau!






Used
2021 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Was a great experience, never having purchased a car in
Was a great experience, never having purchased a car in this manor before. Summit and in particular Ryan Soukup was great and handled everything. Made this the best car purchase I’ve ever had. Would highly recommend all to go through Ryan.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Everything went perfectly.
Everything went perfectly. From arrival to departure. I ordered a new Key FOB from the Parts Department, they called when it had arrived, made a WEB appointment, all very easy. I was greeted promptly and taken care of by very friendly people. When the job was done, I was helped to use my reward paints toward payment. The job was completed much faster than I had expected.






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
The sales person was very helpful.
The sales person was very helpful.and supplied all the necessary information. Very pleased. No pressure.






GMC Certified
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
In and out, very smooth.
In and out, very smooth. No issues at all. The video of the service was pretty Kool. Price is very competitive. All my cars get their service there.






Used
2021 GMC Sierra 3500 SLT
Vehicle information
Features
Reviews
Always great service!
Always great service!! Very informative on the problem. Always updating on time car will be done. Always knowledgeable on problem. Car always ready when they say it will be.






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Andrew did a wonderful job when selling us our 2026 Chevy
Andrew did a wonderful job when selling us our 2026 Chevy Equinox..He was very friendly and informative






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Nathan the salesman was great to work with.
Nathan the salesman was great to work with. Finance through them was fast and easy. Great customer service. Would highly recommend them if you're looking for new or used vehicle






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Out of all the dealerships we?
Out of all the dealerships we?ve been to this one was the best one we had a great experience thanks to DJ! I was high recommended coming here!!






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I had made the mistake of scheduling a service
I had made the mistake of scheduling a service appointment at the Salisbury dealership but my appointment was at the Lexington dealership what a blessing it was they waited on me which they didn’t have to so glad they did they saw something the needed attention and took care of it I could go on and on but I want just saying they treated me better than I expected I will drive further to go there even if the other ones are closer






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Excellent from start to finish.
Excellent from start to finish. I called and spoke to Patrick and explained that I was 3 hours away. He made the transaction very smooth and was always available when I had a question. Could not be more happy with the finance people as well. Thank you for a very pleasant experience!






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Joe was awesome about taking and sending videos of the
Joe was awesome about taking and sending videos of the brand new Grand Wagoneer that they got on the lot before photos were even available online. We stayed in close correspondence and in less than a week, we called the new vehicle "ours." We had a. great experience with Joe and the team at Russ Darrow West Bend.






GMC Certified
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
We had a great experience working with Eric and he went
We had a great experience working with Eric and he went above and beyond to help us with our new vehicle!






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Jason was upfront, honest and straight to the point.
Jason was upfront, honest and straight to the point. Didn?t play any games. I was offered a fair value for my trade in (unlike other dealerships). I was able to get my trade in and drive away in a brand new vehicle all under 3 hours.






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Derek is a friendly salesman.
Derek is a friendly salesman. Excellent customer service. Usually Autonation Ford of Katy has the best options. I bought several new cars in this dealership






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
I contacted Luther Cadillac thru Cars.
I contacted Luther Cadillac thru Cars.com. A representative contacted me within a few mins but I changed my mind about the car and didn't have any more contact with this dealer.






Used
2021 GMC Sierra 3500 Denali
Vehicle information
Features
Reviews
Fantastic Experience!
Had a pleasure doing business with Russell Westbrook CDJR for my new 2021 Dodge Challenger! Zaman, Moses, and Jay worked with me tirelessly to make sure I was happy with the car and our deal for it. This is the second vehicle I've bought from them and I'll definitely be back for a third in the future. Highly recommended!
GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 3500 | $2,681 | |
2025 GMC Sierra 3500 | $45,440 | 39 Great deals |
2024 GMC Sierra 3500 | $37,488 | 42 Great deals |
2023 GMC Sierra 3500 | $44,588 | 29 Great deals |
2022 GMC Sierra 3500 | $33,995 | 37 Great deals |
2020 GMC Sierra 3500 | $27,988 | 17 Great deals |
2019 GMC Sierra 3500 | $22,995 | 9 Great deals |
2018 GMC Sierra 3500 | $18,995 | 32 Good deals |
2017 GMC Sierra 3500 | $25,999 | 6 Great 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 $55,383, with pricing starting at $13,795.
What are some similar vehicles and competitors of the 2021 GMC Sierra 3500?
The 2021 GMC Sierra 3500 compares to and/or competes against the following vehicles:
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.
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Research the 2021 GMC Sierra 3500
Compare the 2021 GMC Sierra 3500
GMC Sierra 3500 trims
-
GMC Sierra 3500 2021 Denali
7 Great Deals out of 92 listings starting at $41,988
-
GMC Sierra 3500 2021 Base
5 Great Deals out of 35 listings starting at $13,795
2021 GMC Sierra 3500 by body style
2021 GMC Sierra 3500 by fuel type
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