Save your search and get notified when new inventory arrives.
Contact seller
Customize your budget
*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.
About your privacy: Cars.com is asking for your ZIP and credit rating because it helps us to make an educated guess at your sales tax and loan interest. These two factors can greatly change your monthly payment.
Used
2021 GMC Sierra 1500 trucks
for sale
near
Tustin, CA
- 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 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Anthony went above and beyond expectations to get the
Anthony went above and beyond expectations to get the vehicle of my choice. Would highly recommend friends and family to purchase their next vehicle here.
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 Elevation
Vehicle information
Features
Reviews
These guys ROCK!!!
As a customer at West Covina Performance Ford, Manny Hernandez is the most knowledgeable and helpful salesman I've ever dealt with and as a new contact Fiona Doran is service is spectacular. I had an unexpected leak in my rear axle of my truck this week and she got my truck in and out in a single day!!!!!!!!! At a dealer!!!!! She kept her word on the time frame and kept me informed. This was so important because I am leaving this week to go on vacation and needed my truck in tip top condition. She saved my trip!!!!!! I highly recommend this dealer and Service department!!!! Manny and Fiona ROCK!!!!!!!
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 Denali
Vehicle information
Features
Reviews
Andrea and her team at Garden Grove Kia were great to
Andrea and her team at Garden Grove Kia were great to work with! The buying process was smooth and easy. I would recommend Garden Grove Kia to any interested in a Kia. Great dealer to work with.
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 SLT
Vehicle information
Features
Reviews
Didn’t end up needing them but they were very proactive
Didn’t end up needing them but they were very proactive in answering my call and questions. Good follow up work.
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 Elevation
Vehicle information
Features
Reviews
Carlos, gave me a good deal on the car, met my
Carlos, gave me a good deal on the car, met my requirements. Thank You Good
Vehicle information
Features
Reviews
Bryan was a excellent person answer all my questions help
Bryan was a excellent person answer all my questions help me to make the decison on buying the trick






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Best salesmen, carrying and awesome service.
Best salesmen, carrying and awesome service. Awesome cars. Thanks for the care and help with this purchase. Thank you, Gilberto Uribe






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
I purchased a truck for my business here after having a
I purchased a truck for my business here after having a bad experience at another dealer. Aaron personally went to their second location to pick my truck up. Thanks Pacific






Used
2021 GMC Sierra 1500 Base
Vehicle information
Features
Reviews
Excellent service
Excellent service here. Totally professional and very kind. I have nothing but positive things to say about them. Thank you very much David and P!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Parts Department
The staff is very helpful, very knowledge able, and very friendly even with a small purchase or no purchase at all.






Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features
Reviews
Dealer add ons are extremely high, we were able to work
Dealer add ons are extremely high, we were able to work on some of those numbers. Still high after bargaining, but I agreed since I wanted this truck. When Mariah came back with financing option, I come to find out that we can't finance outside, it has to be their financing or pay cash! Can you believe this? After everything done with salesperson, had to wait for finance. Sat for over an hour &1/2. Employess kept walking in & out of finance office, some eating, while customer just waiting.
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.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Lisa Briton provided excellent customer service and kept
Lisa Briton provided excellent customer service and kept me informed about the repairs to my vehicle. She was very knowledgeable about the mechanics of the vehicle and what needed to be repaired and explained very thoroughly.
Vehicle information
Features
Reviews
The experience was great.
The experience was great. Worked the numbers over the phone and nothing changed when I arrived onsite. They value creating long term customers.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features






Vehicle information
Features
Reviews
Best Car Buying Experience!
The experience here at Car Castle was by far the Best car buying experience my wife and i have ever had. Thank you Eddie the (Manager) for helping and assisting us with the whole buying process and for giving us a Great Deal!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Quick and easy
Good quick service getting my new towing mirrors installed. Also cleared the check engine light. Steve Pacheco did a great job making the repair happen.

Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Had a very pleasant experience working with Prem.
Had a very pleasant experience working with Prem. He was knowledgeable and patient as I went through the process of deciding on a new truck.
There are 20 matching cars close to your year range.






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2023 GMC Sierra 1500 AT4X
Vehicle information
Features






Used
2020 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2023 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2023 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2022 GMC Sierra 1500 AT4X
Vehicle information
Features






Vehicle information
Features






Used
2023 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2020 GMC Sierra 1500 AT4
Vehicle information
Features






Used
2023 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2020 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2023 GMC Sierra 1500 Denali Ultimate
Vehicle information
Features






Used
2022 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2023 GMC Sierra 1500 Elevation
Vehicle information
Features






Used
2020 GMC Sierra 1500 SLT
Vehicle information
Features






Used
2022 GMC Sierra 1500 AT4
Vehicle information
Features






GMC Certified
2022 GMC Sierra 1500 AT4
Vehicle information
Features
-
Prev - 1
-
Next
GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2025 GMC Sierra 1500 | $29,907 | 4 Good deals |
2024 GMC Sierra 1500 | $33,999 | 8 Great deals |
2023 GMC Sierra 1500 | $34,995 | 14 Good deals |
2022 GMC Sierra 1500 | $30,565 | 2 Good deals |
2020 GMC Sierra 1500 | $29,845 | 7 Good deals |
2018 GMC Sierra 1500 | $20,985 | 5 Good 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 $39,835, with pricing starting at $17,992.
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.
Similar Cars
-
Chevrolet Silverado 1500 for sale
11 Great Deals out of 56 listings starting at $17,958
-
Ford F-150 for sale
4 Great Deals out of 33 listings starting at $18,995
Research the 2021 GMC Sierra 1500
Compare the 2021 GMC Sierra 1500
Used 2021 GMC Sierra 1500 by city
-
2021 GMC Sierra 1500 in North Tustin, CA
3 Great Deals out of 26 listings starting at $17,992
-
2021 GMC Sierra 1500 in Orange, CA
3 Great Deals out of 26 listings starting at $17,992
-
2021 GMC Sierra 1500 in Villa Park, CA
3 Great Deals out of 26 listings starting at $17,992
-
2021 GMC Sierra 1500 in Anaheim, CA
3 Great Deals out of 26 listings starting at $17,992
-
2021 GMC Sierra 1500 in Placentia, CA
3 Great Deals out of 27 listings starting at $17,992
-
2021 GMC Sierra 1500 in Yorba Linda, CA
3 Great Deals out of 26 listings starting at $17,992
-
2021 GMC Sierra 1500 in Stanton, CA
2 Great Deals out of 20 listings starting at $17,992
-
2021 GMC Sierra 1500 in Fullerton, CA
2 Great Deals out of 20 listings starting at $17,992
- ${price_badge()}
- ${ami_badge()}
- ${battery_badge()}${ev_report_link()}
- ${hot_car_badge()}
- ${award_badge()}
- ${cpo_badge()}
${price_badge_description}
${ami_badge_description}
The EV Battery Rating is based on this vehicle's current expected range relative to the vehicles expected range when new. ${battery_badge_text}
Certified cars are manufacturer warrantied and typically go through a rigorous multi-point inspection.
This car is likely to sell soon based on the price, features, and condition.
${award_blurb}
${award_two_blurb}