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Used
2021 GMC Sierra 1500 trucks
for sale
near
Aspen Park, CO
25 matches
30 miles from 80433
Be the first to know!
Est.
$400
/mo*
- 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
96,434 mi.
$37,599
$2,400 price drop
Castle Rock Chevrolet GMC
Vehicle information
Ext. color: Pacific Blue Metallic
Int. color: Walnut
Drivetrain: Four-wheel Drive
MPG:
16-22
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 3.0L I6 24V DDI DOHC Turbo Diesel
Stock #: MZ340923T
VIN: 1GTU9FET5MZ340923
Features
Convenience:
Adaptive Cruise Control, Heated Seats, Heated Steering Wheel, Keyless Entry, Navigation System, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Castle Rock Chevrolet GMC review
Gregory at Castle Chevy GMC is the automotive wizard we
Gregory at Castle Chevy GMC is the automotive wizard we all need! When my wife’s 2023 GMC Yukon XL needed some TLC, Gregory didn’t just fix the issue—he played detective, keeping it an extra day to crack the case like a vehicular Sherlock. And as if that wasn’t enough, he sprinkled some magic dust on a couple of minor, non-essential fixes that were the cherry on top of this service sundae. Professional, communicative, and an absolute delight to work with, Gregory’s the guy who makes you wonder why all car repairs can’t be this fun. Highly recommend him and the Castle Chevy GMC crew for service that’s smoother than a Yukon on cruise control!
2021 GMC Sierra 1500 Denali review
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
76,629 mi.
$39,369
Alpine Buick GMC
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
MPG:
22-21
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: SF154382A
VIN: 3GTU9EET8MG187111
Features
Convenience:
Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Alpine Buick GMC review
Friendly and knowledgeable staff.
Friendly and knowledgeable staff. Thank you for your help and we love our new car!
2021 GMC Sierra 1500 AT4 review
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...
No photo available
Used
2021 GMC Sierra 1500 Denali
50,680 mi.
$42,755
$2,000 price drop
Alpine Buick GMC
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
16-21
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: PMG188586
VIN: 3GTU9FEL8MG188586
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Alpine Buick GMC review
Service was as expected.
Service was as expected. The rep was friendly and kept me informed regarding the progress of my service. I am very pleased. Thanks
2021 GMC Sierra 1500 Denali review
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.
No photo available
Vehicle information
Ext. color: Onyx Black
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
22-21
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: AMZ338135
VIN: 1GTU9CET5MZ338135
Features
Convenience:
Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Reviews
Alpine Buick GMC review
Austin Ellenberg helped us find the exact Buick Enclave
Austin Ellenberg helped us find the exact Buick Enclave that we wanted. He was very nice to work with and patiently helped us understand all the new features on the 2025 car. His explanations of everything were excellent, and we appreciate his offer to talk with us again about any new questions that we come up with. We also appreciate that he had a new battery installed before we took possession of the car, since the previous extreme cold temperatures had run down the battery while the car was on the lot.
2021 GMC Sierra 1500 Elevation review
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 AT4
97,082 mi.
$34,884
Alpine Buick GMC
Vehicle information
Ext. color: Summit White
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
MPG:
16-21
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 5.3L V-8 gasoline direct injection, variable valve contr
Stock #: SG339894A
VIN: 3GTP9EED4MG190836
Features
Convenience:
Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Seating:
Leather Seats, Memory Seat
Reviews
Alpine Buick GMC review
DJ was my salesman and he did an amazing job!
DJ was my salesman and he did an amazing job! I highly recommend going to Alpine Buick. The Facility is beautifully represented. Always eager to help.
2021 GMC Sierra 1500 AT4 review
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!
There are additional matching cars outside your search area.
Partial matches are generated by applying your search criteria to a larger search area. Our goal is to help you discover additional cars that match your search preferences.
As a benefit to some of our dealer customers, we display their listings first.
Used
2021 GMC Sierra 1500 Elevation
83,529 mi.
$33,498
$500 price drop
Rocky Mountain Auto Brokers Inc.
Vehicle information
Ext. color: Satin Steel Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
18-21
Fuel type: Diesel
Transmission: 10-Speed Automatic
Engine: 3.0L I6 24V DDI DOHC Turbo Diesel
Stock #: RM16991
VIN: 3GTU9CET7MG455800
Features
Convenience:
Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Backup Camera, Brake Assist, Stability Control
Used
2021 GMC Sierra 1500 SLT
74,764 mi.
$37,500
Corwin Toyota Colorado Springs
Vehicle information
Ext. color: Satin Steel Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
14-20
Fuel type: Gasoline
Transmission: 8-Speed Automatic
Engine: EcoTec3 5.3L V8
Stock #: 3190370
VIN: 3GTU9DEDXMG190370
Features
Convenience:
Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 AT4
99,915 mi.
$36,594
$243 price drop
Perkins Chrysler Dodge Jeep RAM
Vehicle information
Ext. color: Satin Steel Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
16-21
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 5.3L V8 16V GDI OHV
Stock #: 594207A
VIN: 3GTP9EEDXMG350072
Features
Convenience:
Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Backup Camera, Brake Assist, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 Denali
56,753 mi.
$44,494
$261 price drop
Davidson/Gebhardt Chevrolet
Vehicle information
Ext. color: Pacific Blue Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
16-20
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 6.2L V-8 gasoline direct injection, variable valve contr
Stock #: T25366C
VIN: 3GTU9FELXMG102727
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 SLE
119,038 mi.
$27,399
$100 price drop
Yoder Chevrolet
Vehicle information
Ext. color: White
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
18-21
Fuel type: Gasoline
Transmission: Automatic
Engine: 5.3L V8 16V GDI OHV
Stock #: C0448A
VIN: 1GTU9BED2MZ164513
Features
Convenience:
Heated Steering Wheel, Keyless Start, Remote Start
Entertainment:
Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Tow Hitch
Safety:
Backup Camera, Brake Assist, Stability Control
Used
2021 GMC Sierra 1500 Denali
44,152 mi.
$41,776
$1,122 price drop
Ferguson Buick GMC
Vehicle information
Ext. color: Dark Sky Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
16-22
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 5.3L V8 16V GDI OHV
Stock #: T25137A
VIN: 1GTU9FED0MZ257733
Features
Convenience:
Heated Steering Wheel, Navigation System, Remote Start
Entertainment:
Bluetooth®, Premium Sound System, Satellite Radio
Exterior:
Alloy Wheels, Tow Hitch
Safety:
Brake Assist, Stability Control
Seating:
Leather Seats, Memory Seat
Vehicle information
Ext. color: Red
Int. color: Jet Black w/Kalahari Accents
Drivetrain: Four-wheel Drive
MPG:
16-21
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 5.3L V-8 gasoline direct injection, variable valve contr
Stock #: 74828
VIN: 1GTP9EEDXMZ244592
Features
Convenience:
Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Satellite Radio, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Brake Assist, LED Headlights, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 Denali
84,300 mi.
$37,787
Peak Kia Colorado Springs
Vehicle information
Ext. color: Cayenne Red Tintcoat
Int. color: Jet Black
Drivetrain: Four-wheel Drive
MPG:
22-26
Fuel type: Diesel
Transmission: Automatic
Engine: Duramax 3L I-6 diesel direct injection, DOHC, variable valve con
Stock #: MG159333
VIN: 3GTU9FETXMG159333
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Power Folding Mirrors, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, HomeLink, Premium Sound System, Satellite Radio, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Sunroof/Moonroof, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 SLT
84,277 mi.
$37,299
$300 price drop
Weld County Garage
Vehicle information
Ext. color: Gray
Int. color: Dark Walnut/Slate, Perforated leather-appointed front outboard s
Drivetrain: Four-wheel Drive
MPG:
16-20
Fuel type: Gasoline
Transmission: Automatic
Engine: EcoTec3 5.3L V-8 gasoline direct injection, variable valve contr
Stock #: GM10628A
VIN: 3GTU9DED6MG265498
Features
Convenience:
Adaptive Cruise Control, Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Navigation System, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, USB Port, WiFi Hotspot
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Automatic Emergency Braking, Backup Camera, Blind Spot Monitor, Brake Assist, LED Headlights, Lane Departure Warning, Rear Cross Traffic Alert, Stability Control
Seating:
Leather Seats, Memory Seat
Used
2021 GMC Sierra 1500 AT4
26,377 mi.
$47,000
Corwin Honda Colorado Springs
Vehicle information
Ext. color: Steel Metallic
Int. color: Jet Black
Drivetrain: Four-wheel Drive
Fuel type: Gasoline
Transmission: 10-Speed Automatic
Engine: 6.2L V8 16V GDI OHV
Stock #: 4447395
VIN: 1GTP9EEL5MZ447395
Features
Convenience:
Cooled Seats, Heated Seats, Heated Steering Wheel, Keyless Entry, Keyless Start, Remote Start
Entertainment:
Android Auto®, Apple CarPlay®, Bluetooth®, Premium Sound System, Satellite Radio, USB Port
Exterior:
Alloy Wheels, Tow Hitch, Tow Hooks
Safety:
Backup Camera, Brake Assist, Stability Control
Seating:
Leather Seats, Memory Seat
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Next
GMC Sierra 1500 prices by year
| Model year | Average price | Deals |
|---|---|---|
| 2026 GMC Sierra 1500 | $69,514 | |
| 2025 GMC Sierra 1500 | $60,814 | 3 Good deals |
| 2024 GMC Sierra 1500 | $56,623 | 9 Great deals |
| 2023 GMC Sierra 1500 | $50,512 | 17 Good deals |
| 2022 GMC Sierra 1500 | $45,231 | 13 Good deals |
| 2020 GMC Sierra 1500 | $36,425 | 8 Good deals |
| 2019 GMC Sierra 1500 | $35,632 | 10 Good deals |
| 2018 GMC Sierra 1500 | $29,275 | 11 Good deals |
*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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2021 GMC Sierra 1500 by body style
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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.