2021
GMC Sierra 3500
Starts at:
$45,000
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$63,687125 mi away -
$50,777 $213 price drop146 mi away
Photo & video gallery
The good & the bad
Available cars near you
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$63,687125 mi away
-
$50,777 $213 price drop146 mi away
Factory warranties
New car program benefits
Basic
3 years / 36,000 miles
Corrosion
3 years / 36,000 miles
Powertrain
5 years / 60,000 miles
Roadside Assistance
5 years / 60,000 miles
Certified Pre-Owned program benefits
Age / mileage
5 model years or newer / up to 75,000 miles
Basic
12 months / 12,000 miles bumper-to-bumper original warranty, then may continue to 6 years / 100,000 miles limited (depending on variables)
Dealer certification
172-point inspection
Compare similar vehicles
Select cars to compare for more detailed info.
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2021GMC Sierra 3500Starts at$37,400
2Seat capacityGas V8EngineRear-wheel driveDrivetrain4,304 lbsPayload Capacity20,000 lbsTowing CapacityCompare -
2023GMC Sierra 3500Starts at$43,400
2Seat capacityGas V8EngineRear-wheel driveDrivetrain4,263 lbsPayload Capacity20,000 lbsTowing CapacityCompare -
2021Chevrolet Silverado 3500Starts at$36,500
2Seat capacityGas V8EngineRear-wheel driveDrivetrain4,331 lbsPayload Capacity20,000 lbsTowing CapacityCompare -
2021GMC Sierra 2500Starts at$36,200
3Seat capacityGas V8EngineRear-wheel driveDrivetrain3,976 lbsPayload Capacity14,500 lbsTowing CapacityCompare
Most recent
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
- Purchased a New car
- Used for Towing
- Does recommend this car
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.
- Purchased a Used car
- Used for Commuting
- Does recommend this car
Latest news from cars.com
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462,000 GM Diesel Trucks, SUVs Recalled for Transmission Issue
Another major GM recall affecting diesel-equipped pickup trucks and SUVs involves a transmission control valve that may fail.
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Chevrolet Silverado, GMC Sierra HDs Recalled Over Tailgates
A recall for more than 323,200 Chevrolet Silverado and GMC Sierra HD pickups is out over the risk of unwanted tailgate openings.
Seat Belt Issue Prompts Recall of 624,200 GM Vehicles
GM is recalling approximately 624,200 Chevrolet and GMC vehicles for an issue with a front-seat seat belt bracket.
GMC dealers near you
FAQ
What trim levels are available for the 2021 GMC Sierra 3500?
The 2021 GMC Sierra 3500 is available in 5 trim levels:
- (8 styles)
- AT4 (2 styles)
- Denali (2 styles)
- SLE (8 styles)
- SLT (4 styles)
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 4.0 out of 5 according to cars.com consumers. Find real-world reliability insights within consumer reviews from 2021 GMC Sierra 3500 owners.
Is the 2021 GMC Sierra 3500 a good Truck?
Below are the cars.com consumers ratings for the 2021 GMC Sierra 3500. 100.0% of drivers recommend this vehicle.
- Comfort: 4.5
- Interior: 4.5
- Performance: 5.0
- Value: 4.0
- Exterior: 4.5
- Reliability: 4.0
GMC Sierra 3500 history
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2025 GMC Sierra 3500 -
2024 GMC Sierra 3500 -
2023 GMC Sierra 3500 -
2022 GMC Sierra 3500 -
2021 GMC Sierra 3500 -
2020 GMC Sierra 3500 -
2019 GMC Sierra 3500 -
2018 GMC Sierra 3500
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