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*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.
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Used
2021 GMC Sierra 3500 Base 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 Base
Vehicle information
Features
Reviews
Best dealship ever!
Best dealship ever! I highly recommend whether you have questions, are in the market to buy, or have you vehicle serviced. Stop by and see for yourself.
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 Base
Vehicle information
Features
Reviews
Jonathan Osborne ?
Jonathan Osborne ?Oz? was hands down, wonderful! Great experience! Tara in Finance made our financing appointment enjoyable! We could not have asked for two better people to work with that day!
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






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Had a great experience at Smith Chevrolet.
Had a great experience at Smith Chevrolet. Humberto was a huge help. Was very knowledgeable and answered every questions I had!






Vehicle information
Features
Reviews
Very Transparent!!!
Great organization with great staff. The whole staff went over and beyond to give a very transparent experience. I would highly recommend them to anyone looking for a honest fair deal.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
John was my salesman, Adam was the sales manager.
John was my salesman, Adam was the sales manager. I forget the name of the finance guy, but he was very nice too. This was one of the greatest dealer experiences I have ever had. First of all they have no dealer fee. The entire team went above and beyond. They all kept every single promise they made. John was very attentive to our needs. I can’t recommend this place enough.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
2018 Dodge Durango Purchase
I purchased a used 2018 Dodge Durango from Dylan Wagener. The experience was great! Dylan is very personable and friendly as well as the finance person at the dealership.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Best service in Indiana!
Best service in Indiana! My car decided not to start, yesterday. Called Alsop Chevrolet in Attica, this morning. They came, picked it up and took it to the shop and installed a new battery for us, then delivered the car back home for us! No one else would ever do that. Thanks, Tianna for getting us back on the road! Glad we have great service available to us older folks! Thank you Mike for a great team over there! Much appreciated! Ron & Becky Bradford






Vehicle information
Features
Reviews
We had excellent service when buying a new Buick at
We had excellent service when buying a new Buick at Jensen Motors in New Ulm. Eric was very helpful and knowledgeable! We enjoyed our experience!






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Bought my Toyota Rav4 from United Auto Sales from
Bought my Toyota Rav4 from United Auto Sales from Raelynn. The staff was friendly and didn't push me into anything. They showed me the Carfax and service records right away. Got approved for financing quickly with a decent rate. Everything was simple and honest. The car runs perfectly, and I'm happy with my purchase. Would recommend them if you're looking for a new car!






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features






Vehicle information
Features
Reviews
Ali was good.
Ali was good. I had the financing secured online as well as a couple others to choose from that Ali provided.. Made sure the car was in tip top shape before delivery and handled everything at the RMV. Extremely satisfied with the process.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Thank you Fortune Wheeler for a wonderful experience!
Thank you Fortune Wheeler for a wonderful experience! We love our KIA! We will definitely use you for our next purchase.






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 Base
Vehicle information
Features
Reviews
Christian was great!
Christian was great! We came in to test drive a truck and went home with a great truck that exceeded our expectations! We were a prior customer 5 years ago, and we were treated right again!


Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
Weirs Motor Sales
My vehicle was in for an Oil Change, Air Filter replacement, and new tires. The service dept ran into an issue getting my vehicle to align properly after multiple attempts with different technicians. Know that I was waiting at the location for my vehicle the Service Manager informed me of the issue and what was done to correct it to that point. He offered me the option of dropping off my vehicle a different day so they could get the issue taken care of. He also gave me a vehicle to use while my vehicle was being repaired as well as matching the tire price and even found a rebate on the tires I purchased. I purchased my vehicle at this location and would recommend Weirs Motor Sales in Arundel Maine to anyone looking for a GMC vehicle.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
I found a great deal on my 2024 Frontier at Tim Dahle.
I found a great deal on my 2024 Frontier at Tim Dahle. My salesman Bryker Durant was very easy to work with, and helped make the process simple.






Used
2021 GMC Sierra 3500 Base
Vehicle information
Features
Reviews
I did not buy but over all customer service was
I did not buy but over all customer service was excellent. Was approved pretty fast
Vehicle information
Features
Reviews
Love Jacob!
Love Jacob! He might be my favorite person at the whole dealership. As soon as he sees me drive up, he walks up with a smile on his face.
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GMC Sierra 3500 prices by year
Model year | Prices from | Deals |
---|---|---|
2020 GMC Sierra 3500 Base | $34,499 | 5 Great deals |
About the 2021 GMC Sierra 3500 Base
Base shown.
- 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 Base cost?
The 2021 GMC Sierra 3500 Base price depends on several factors, including optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 3500 Base is $50,558, with pricing starting at $13,795.
What are some similar vehicles and competitors of the 2021 GMC Sierra 3500 Base?
The 2021 GMC Sierra 3500 Base compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 3500 Base 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.
100% of drivers recommend this car
- Comfort 4.5
- Interior 4.5
- Performance 5.0
- Value 4.0
- Exterior 4.5
- Reliability 4.0
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) |
*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 3500 trims
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GMC Sierra 3500 2021 Denali
1 Great Deal out of 74 listings starting at $42,488
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