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Used
2021 GMC Sierra 1500 trucks
for sale
near
Seabrook, NH
- 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 AT4
Vehicle information
Features
Reviews
> The Buying process was not applicable due to cash pay.
> The Buying process was not applicable due to cash pay. However, the trade-in process was reasonably efficient. *However, i opt for no comment on the fair market value of the car traded. > The quality of repairs hasn't happened yet, but I would like to contribute to the survey when it happens.
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.






Vehicle information
Features
Reviews
Awesome Experience!
One of the best experiences we have ever had! We have been looking for a truck with a plow for months. Found Auto Mart when they popped up on Facebook Marketplace. Best find ever! Dealt with Peter on the phone. Very helpful every time we called him, and very patient because it was our first time buying online. This includes him meeting with us on his day off and not rushing us one bit. The price was good and we feel him and Chris took very good care of us. We will go back, and highly recommend them.
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 SLT
Vehicle information
Features
Reviews
Best dealership ever!
Best dealership ever! Porsche Stratham is both high quality and low pressure! The dealership itself is beautifully appointed and employs the top customer care, sales and technical team. The software the dealership uses in its service department must be state of the art as it provides incredible detail and makes it easy.
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 AT4
Vehicle information
Features
Reviews
Best experience this retired couple has ever had buying a
Best experience this retired couple has ever had buying a vehicle. Masha was a knowledgeable, helpful, and no pressure sales person. Of the 3 dealerships we contacted this one excels in inventory, best deals, and organization. Rochester was a huge disappointment when the fast talking pressure type manager got involved, we walked away. Nu Car in Tilton wouldn't honor their posted price on Auto Trader and no mention of the dealer incentive, just their version of MSRP.
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 Elevation
Vehicle information
Features
Reviews
Jim clouds buying experience
Awesome I was very pleased. They called me and told me they had a pickup I might be interested in so I went over and it was very close to what I was looking for so they give me a good price and I bought it.
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 Denali
Vehicle information
Features
Reviews
Friendly, helpful and took good care of us.
Friendly, helpful and took good care of us. Have been leasing cars at team Nissan for over 25 years. I will continue to use team Nissan for all of my future leases.






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
After 102,000 miles, I finally needed to have a small
After 102,000 miles, I finally needed to have a small part replaced. Honda makes reliable cars. Dealer did not have the part in stock but it was installed the next morning. Work was done perfectly. Everyone was very nice. The waiting area was comfortable. The coffee and snacks were great. HOWEVER, the job was outrageously expensive. This is why I avoid dealerships for servicing.






GMC Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
buying a new truck
Jack A was wonderful to work with. He made buying our new vehicle stress free.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
New car
Excellent salesman Scott. Dealership impeccable. Everyone professional and courteous. Explained every detail of buying process. Finance staff Kendra extremely professional and explained every process of leading my vehicle






GMC Certified
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
mia was great to work with and I'll recommend all my
mia was great to work with and I'll recommend all my friends and family to her.






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Everyone especially Alex was extremely helpful during the
Everyone especially Alex was extremely helpful during the process of getting my car. An amazing experience during the process.
Vehicle information
Features
Reviews
This dealership is outstanding.
This dealership is outstanding. The personnel are competent, user-friendly and efficient. I would highly recommend without qualification purchasing an automobile from Audi Stratham NH
There are 20 matching cars close to your year range.




Used
2022 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2019 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 1500 Denali Ultimate
Vehicle information
Features






Used
2022 GMC Sierra 1500 Elevation
Vehicle information
Features






GMC Certified
2022 GMC Sierra 1500 AT4
Vehicle information
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Used
2022 GMC Sierra 1500 SLE
Vehicle information
Features






Used
2022 GMC Sierra 1500 Elevation
Vehicle information
Features






GMC Certified
2023 GMC Sierra 1500 Elevation
Vehicle information
Features






Certified
2022 GMC Sierra 1500 AT4
Vehicle information
Features






GMC Certified
2023 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2019 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features






GMC Certified
2020 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLE
Vehicle information
Features






Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features






GMC Certified
2023 GMC Sierra 1500 Denali
Vehicle information
Features






GMC Certified
2023 GMC Sierra 1500 AT4X
Vehicle information
Features






GMC Certified
2020 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2023 GMC Sierra 1500 Denali
Vehicle information
Features
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 1500 | $36,640 | 1 Good deal |
2024 GMC Sierra 1500 | $34,981 | 9 Good deals |
2023 GMC Sierra 1500 | $41,987 | 10 Good deals |
2022 GMC Sierra 1500 | $35,491 | 6 Great deals |
About the 2021 GMC Sierra 1500
Base shown (base trim).
- Seating
- 3
- Door count
- 2
- Drivetrain
- Rear-wheel drive
- Combined MPG
- 16
- Transmission
- 6-Speed A/T
- Engine
- 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability)

How much does the 2021 GMC Sierra 1500 cost?
The 2021 GMC Sierra 1500 price depends on several factors, including the trim level, optional features, mileage, vehicle history and location. The nationwide average price for a 2021 Sierra 1500 is $39,518, with pricing starting at $14,980.
What is the MPG of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 offers up to 14 MPG in city driving and 19 MPG on the highway for a combined rating of 16 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 trim, driving conditions, driving habits, vehicle maintenance, and other factors.
What are some similar vehicles and competitors of the 2021 GMC Sierra 1500?
The 2021 GMC Sierra 1500 compares to and/or competes against the following vehicles:
Is the 2021 GMC Sierra 1500 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.
Is the 2021 GMC Sierra 1500 a good truck?
Below are the Cars.com consumer ratings for the 2021 GMC Sierra 1500.
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
60% of drivers recommend this car
- Comfort 4.2
- Interior 4.2
- Performance 3.8
- Value 3.6
- Exterior 4.3
- Reliability 3.5
AT4 (2 styles)
Style | |
---|---|
4WD Crew Cab 157" AT4 | 4WD Crew Cab 147" AT4 |
Inventory price | |
Starting at $55,900 | Starting at $54,700 |
Combined MPG | |
16 | 17 |
Engine | |
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Base (7 styles)
Style | ||||||
---|---|---|---|---|---|---|
4WD Double Cab 147" | 2WD Double Cab 147" | 2WD Crew Cab 147" | 4WD Crew Cab 147" | 4WD Crew Cab 157" | 4WD Reg Cab 140" | 2WD Reg Cab 140" |
Inventory price | ||||||
Starting at $37,300 | Starting at $34,000 | Starting at $36,400 | Starting at $39,700 | Starting at $40,000 | Starting at $34,700 | Starting at $30,100 |
Combined MPG | ||||||
19 | 21 | 21 | 19 | 19 | 16 | 16 |
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) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) | 285.0-hp, 4.3-liter, V6 Cylinder Engine (Flex Fuel Capability) |
Denali (3 styles)
Style | ||
---|---|---|
2WD Crew Cab 147" Denali | 4WD Crew Cab 147" Denali | 4WD Crew Cab 157" Denali |
Inventory price | ||
Starting at $55,800 | Starting at $59,300 | Starting at $59,600 |
Combined MPG | ||
17 | 18 | 18 |
Engine | ||
355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) |
Elevation (7 styles)
Style | ||||||
---|---|---|---|---|---|---|
4WD Double Cab 147" Elevation w/3VL | 4WD Crew Cab 147" Elevation w/3VL | 4WD Crew Cab 157" Elevation | 2WD Double Cab 147" Elevation | 4WD Double Cab 147" Elevation w/3SB | 4WD Crew Cab 147" Elevation w/3SB | 2WD Crew Cab 147" Elevation |
Inventory price | ||||||
Starting at $44,600 | Starting at $47,200 | Starting at $49,300 | Starting at $43,100 | Starting at $46,400 | Starting at $49,000 | Starting at $45,700 |
Combined MPG | ||||||
19 | 19 | 19 | 21 | 19 | 19 | 21 |
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) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) | 310.0-hp, 2.7-liter, 4 Cylinder Engine (Gasoline Fuel) |
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) |
SLT (3 styles)
Style | ||
---|---|---|
4WD Crew Cab 147" SLT | 2WD Crew Cab 147" SLT | 4WD Crew Cab 157" SLT |
Inventory price | ||
Starting at $50,800 | Starting at $47,500 | Starting at $51,100 |
Combined MPG | ||
18 | 17 | 18 |
Engine | ||
420.0-hp, 6.2-liter, 8 Cylinder Engine (Gasoline Fuel) | 355.0-hp, 5.3-liter, 8 Cylinder Engine (Gasoline Fuel) | 420.0-hp, 6.2-liter, 8 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.
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