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Used
2021 GMC Sierra 1500 trucks
for sale
near
Fullerton, 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 SLT
Vehicle information
Features
Reviews
Enjoyed my experience here at this dealership.
Enjoyed my experience here at this dealership. Came out with a brand new car! Anthony was extremely helpful and guided us to find the car we were looking for.
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 Elevation
Vehicle information
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Reviews
Marco delivered excellent service!
Marco delivered excellent service!! Overall great customer service and very knowledgeable. Will continue scheduling with him.
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...






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!
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.






Vehicle information
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Reviews
This was one of the best experiences I had purchasing a
This was one of the best experiences I had purchasing a vehicle everyone was kind a very knowledgeable. This was the quickest I've ever purchased a car thank u !!!
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.






Vehicle information
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Reviews
PETER F ANDERSON
GREAT BUYING EXPERIENCE, SALESMAN ANTONIO WAS GOOD AND FUN, HE TOOK MY BARBS AND KIDDING IN STRIDE. RONICE THE GAL THAT DOES THE PAPER WORK HAS A GREAT PERSONALITY, SHE COULD TAKE MY KIDDING AND FIRE BACK A COMEBACK, HAD A GREAT HANDSHAKE. ONLY PROBLEM, DOING THE PAPERWORK TOOK TOO LONG, I PRESUME BECAUSE QUITE A FEW CARS WERE SOLD THAT DAY
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 AT4
Vehicle information
Features
Reviews
Great service from Salam and Kai thank you for getting
Great service from Salam and Kai thank you for getting our car here on time






Used
2021 GMC Sierra 1500 AT4
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
Xavier, Sebastian, Aaron, and Nicole were all helpful and
Xavier, Sebastian, Aaron, and Nicole were all helpful and good to work with! Thank you!






Used
2021 GMC Sierra 1500 SLT
Vehicle information
Features
Reviews
Such a great experience I will definitely recommend
Such a great experience I will definitely recommend anyone who is looking for a car to go here they dye were patient and friendly high recommend!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Daniel was great to work with I highly recommend
Daniel was great to work with I highly recommend requesting him. He was on my side and did everything he could to make sure I was taken care of.






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Friendly people and good service?
Friendly people and good service?.Will definitely recommend to my family and friends?,Got my Silverado with all the features that I was looking for..






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Best Experience Overall
Jerry from the start helped me every step of the way, did everything he could. Very friendly, whole staff made us feel welcomed. I am still thankful they were able to make it all happen. Definitely recommend going to WCA!!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Car Castle is Awesome!!
Car Castle by far the best customer service, from sales rep to management Eddie everyone here is wonderful.Thank you Car Castle for my new Van!






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I wrote an earlier experience and I gave it a 1 point.
I wrote an earlier experience and I gave it a 1 point. Well the manager call and it changed everything. I tried removing my comment but it will not let me for some reason so I wanted to do an update. August 9, 2024 By Carlos from Pomona, CA Ford Chino Hills: I wanted to express my gratitude for your recent assistance in addressing the issues I encountered at Chino Hills Ford. Initially, my experience did not meet my expectations, but your proactive approach and dedication to resolving the situation made a significant difference. When you reached out and took the time to understand my concerns, it was clear that customer satisfaction is a top priority for your team. Your prompt actions and thoughtful solutions turned my experience from a challenging one into a highly positive one. I truly appreciate the extra effort you made to ensure all my needs were met and that everything was handled to my satisfaction. The improvements made have greatly enhanced my overall impression of Chino Hills Ford, and I am now very pleased with both the service and the outcome. I commend you and your team for the professionalism and commitment to resolving the situation effectively. Thank you once again for your exceptional support. I look forward to continuing my relationship with Chino Hills Ford and will be sure to recommend your services to others.






Used
2021 GMC Sierra 1500 Base
Vehicle information
Features
Reviews
minhphm9@yahoo.com
Good job, Great service, thank you. I will alway bring my car here
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Absolutely love our leasing experience at Anaheim
Absolutely love our leasing experience at Anaheim Hyundai!! Corbin Patel found the perfect car for us and walked us through the whole experience with professionalism and sincere kindness. Anaheim Hyundai is lucky that have him!!!
Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
Found the exact Civic we wanted and worked with our
Found the exact Civic we wanted and worked with our Budget! Thank you Armando and the Honda World team!






Used
2021 GMC Sierra 1500 Elevation
Vehicle information
Features
Reviews
The prices attracted me.
The prices attracted me. The customer service and experience/ level of knowledge was not great. There was an inconsistency of dealership policy. It would be nice to get a car for the price you expect. I felt forced to purchase items I did not want






Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
I chatted on line with Carlos Suarez!
I chatted on line with Carlos Suarez! We are trying to set up when I can go there before Donald Trump screws up my final dream of affording a Toyota Tundra. If not maybe in the next life.
Used
2021 GMC Sierra 1500 AT4
Vehicle information
Features
Reviews
Got my new car!
On April 6, 2023, I took delivery of a 2023 Yukon Denali Ultimate, which was a SUV that I ordered, equipped the way I wanted it. John and the entire sales staff were great! I have purchased/leased 4 other vehicles from this dealership and have always been treated well. If you want to avoid all of the seemingly normal drama that goes along with walking into a dealership, you need to try this one - you'll be pleasantly surprised.
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Used
2021 GMC Sierra 1500 Base
Vehicle information
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GMC Certified
2021 GMC Sierra 1500 Denali
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Used
2021 GMC Sierra 1500 AT4
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Used
2021 GMC Sierra 1500 Denali
Vehicle information
Features






Used
2021 GMC Sierra 1500 AT4
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Features






Certified
2021 GMC Sierra 1500 SLT
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Used
2021 GMC Sierra 1500 Elevation
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Features






Used
2021 GMC Sierra 1500 AT4
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Used
2021 GMC Sierra 1500 SLT
Vehicle information
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Used
2021 GMC Sierra 1500 SLT
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GMC Sierra 1500 prices by year
Model year | Prices from | Deals |
---|---|---|
2026 GMC Sierra 1500 | $38,850 | |
2025 GMC Sierra 1500 | $31,972 | 2 Good deals |
2024 GMC Sierra 1500 | $34,000 | 8 Great deals |
2023 GMC Sierra 1500 | $29,995 | 21 Good deals |
2022 GMC Sierra 1500 | $37,547 | 7 Good deals |
2020 GMC Sierra 1500 | $20,999 | 9 Good deals |
2018 GMC Sierra 1500 | $12,785 | 3 Good deals |
2017 GMC Sierra 1500 | $18,700 | 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 $38,284, 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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This vehicle is currently in high demand given its competitive price, desirable features, and overall condition, and may have a higher chance of selling quickly.