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993 listings
- Price Drop$43,979great price$5,683 below market
- 48,973 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- AutoNation Buick GMC Park Meadows (10 mi away)
- Home delivery*
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Located in Lone Tree, CO / 10 miles away from Denver, CO
The following items have been reconditioned on this vehicle: new brakes and all new tires! At4 Value PackageEngine; 6.2L Ecotec3 V8Technology Pac...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GTP9EEL4MZ259564
Stock: MZ259564
Certified Pre-Owned: No
Listed since: 03-18-2025 - $33,000great price$3,313 below market
- 104,391 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- AutoNation Buick GMC West (11 mi away)
- Home delivery*
Close
Located in Golden, CO / 11 miles away from Denver, CO
Engine; Duramax 3.0L Turbo-Diesel I6Preferred PackageX31 Off-Road PackageSeats; Front BucketPacific Blue MetallicTrailer Brake Controller; Integr...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CET7MG193079
Stock: MG193079
Certified Pre-Owned: No
Listed since: 03-26-2025 - $39,999fair price$431 below market
- 63,686 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- Reds Auto and Truck (32 mi away)
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Located in Longmont, CO / 32 miles away from Denver, CO
Red's is pleased to present this 2021 GMC Sierra 1500 Elevation! This sweet Sierra comes equipped with a 3.0L Duramax Turbo Diesel engine under the ho...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CET0MG288356
Stock: 2025-071
Certified Pre-Owned: No
Listed since: 03-13-2025 - $38,800fair price$1,270 below market
- 80,100 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- AutoNation Buick GMC West (11 mi away)
- Home delivery*
Close
Located in Golden, CO / 11 miles away from Denver, CO
The following items have been reconditioned on this vehicle: new brakes! Keyless StartCooled Front Seat(S)Engine; 5.3L Ecotec3 V8This vehicle ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
18 Combined MPG (16 City/21 Highway)
Listing Information:
VIN: 1GTP9EED9MZ367185
Stock: MZ367185
Certified Pre-Owned: No
Listed since: 03-26-2025 - Price Drop$33,000good price$2,364 below market
- 113,229 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- AutoNation Ford Arapahoe (9 mi away)
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Located in Centennial, CO / 9 miles away from Denver, CO
Engine; Duramax 3.0L Turbo-Diesel I6Keyless StartCooled Front Seat(S)2021GMCSierra 1500 There's a level of quality and refinement in this GMC Sie...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
18 Combined MPG (16 City/21 Highway)
Listing Information:
VIN: 3GTU9EET6MG393897
Stock: MG393897
Certified Pre-Owned: No
Listed since: 03-31-2025 - $34,999good price$1,178 below market
- 127,331 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Reds Auto and Truck (32 mi away)
Close
Located in Longmont, CO / 32 miles away from Denver, CO
Red's is pleased to present this 2021 GMC Sierra 1500 AT4 Duramax! This awesome truck is super cool, coming equipped with the rare 3.0L Duramax Turbo ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
24 Combined MPG (22 City/26 Highway)
Listing Information:
VIN: 3GTU9EET4MG301007
Stock: 2025-153
Certified Pre-Owned: No
Listed since: 04-07-2025 - New Listing$48,998fair price$1,049 below market
- 47,938 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 6.2l, 8cyl
- CarMax Golden (11 mi away)
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Located in Golden, CO / 11 miles away from Denver, CO
CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9FEL5MG257461
Stock: 26699888
Certified Pre-Owned: No - Price Drop$37,498fair price$89 below market
- 92,934 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- Mike Maroone Ford Longmont (33 mi away)
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Located in Longmont, CO / 33 miles away from Denver, CO
CARFAX One-Owner. FREE DELIVERY ANYWHERE IN COLORADO, 4 WHEEL DRIVE, KEYLESS IGNITION, POWER SEATS, APPLE CARPLAY/ANDROID AUTO, BLUETOOTH/HANDS FREE, ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CET1MG372735
Stock: HUP44558
Certified Pre-Owned: No
Listed since: 02-18-2025 - $42,998fair price$573 below market
- 84,863 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- CarMax Golden (11 mi away)
Close
Located in Golden, CO / 11 miles away from Denver, CO
CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTP9EEL7MG306022
Stock: 26868569
Certified Pre-Owned: No - Price Drop$42,547fair price$343 above market
- 60,480 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- AutoNation Buick GMC Park Meadows (10 mi away)
- Home delivery*
Close
Located in Lone Tree, CO / 10 miles away from Denver, CO
Engine; 6.2L Ecotec3 V8Lpo; At4 High Clearance StepWheels; 20" X 9" (50.8 Cm X 22.9 Cm) Machined Aluminum With Carbon Grey Metallic AccentsLeather ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTP9EEL6MG403874
Stock: MG403874
Certified Pre-Owned: No
Listed since: 03-20-2025 - $45,521fair price$397 above market
- 59,950 miles
- No accidents, personal use only
- 6'7” bed, 6.2l, 8cyl
- ClearShift Loveland (50 mi away)
Close
Located in Loveland, CO / 50 miles away from Denver, CO
The 2021 GMC Sierra 1500 Denali is a premium full-size pickup truck that blends luxury, performance, and advanced technology. Under the hood, this Sie...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 1GTU9FEL4MZ244569
Stock: KM244569
Certified Pre-Owned: No
Listed since: 03-06-2025 - New Listing$23,997fair price$277 above market
- 117,725 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 2.7l, 4cyl
- ClearShift (9 mi away)
Close
Located in Highlands Ranch, CO / 9 miles away from Denver, CO
2021 GMC Sierra 1500 Base Summit White 4WD 2.7L Turbo 8-Speed AutomaticClean CARFAX. CARFAX One-Owner.Call us today to speak with one of our frie...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
17 Combined MPG (15 City/20 Highway)
Listing Information:
VIN: 1GTR9AEK0MZ331871
Stock: KM331871
Certified Pre-Owned: No
Listed since: 04-03-2025 - $39,389fair price$1,260 above market
- 83,436 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Johnson Auto Plaza (19 mi away)
Close
Located in Brighton, CO / 19 miles away from Denver, CO
2021 GMC Sierra 1500 AT4 Summit White 4WD 3.0L I6 10-Speed Automatic10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.22/26 City/H...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
24 Combined MPG (22 City/26 Highway)
Listing Information:
VIN: 3GTU9EET4MG448279
Stock: G517596A
Certified Pre-Owned: No
Listed since: 04-02-2025 - $38,798fair price$1,168 below market
- 66,020 miles
- 1 accident, 1 owner, corporate fleet vehicle
- 5'10” bed, 3l, 6cyl
- Castle Rock Chevrolet GMC (24 mi away)
Close
Located in Castle Rock, CO / 24 miles away from Denver, CO
10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Ins...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9EET4MG431563
Stock: MG431563A
Certified Pre-Owned: No
Listed since: 02-20-2025 - $39,587fair price$67 above market
- 51,680 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 3l, 6cyl
- O'Meara Volkswagen of Thornton (13 mi away)
Close
Located in Thornton, CO / 13 miles away from Denver, CO
Onyx Black 2021 GMC Sierra 1500 SLTFully Serviced & Ready to Go, Sierra 1500 SLT, 4D Crew Cab, 3.0L I6, 10-Speed Automatic, RWD, Onyx Black, Jet Bla...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTP8DET2MG213311
Stock: 9772VP
Certified Pre-Owned: No
Listed since: 03-22-2025 - $38,497great price$7,632 below market
- 101,131 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Mercedes-Benz Of Denver (2 mi away)
- Five Star Dealer
Close
Located in Denver, CO / 2 miles away from Denver, CO
PREMIUM PLUS PACKAGE, SAFETY PLUS PACKAGE, PREFERRED EQUIPMENT GROUP, CONVENIENCE PACKAGE, OFF-ROAD PACKAGE, 4WD, 13.4 " DIAGONAL PREMIUM GMC INFOTAIN...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTUUDEL4NG594983
Stock: PNG594983
Certified Pre-Owned: No
Listed since: 03-10-2025 - Price Drop$39,200fair price$166 above market
- 32,717 miles
- 1 accident, 2 owners, personal use only
- 5'10” bed, 5.3l, 8cyl
- Holman Honda (9 mi away)
Close
Located in Centennial, CO / 9 miles away from Denver, CO
**RUNNING BOARDS**OFF-ROAD SUSPENSION**SPRAY IN FACTORY BED-LINER**2021 GMC Sierra 1500 SLT EcoTec3 5.3L V8, Summit White, Jet Black Leather, 120-Volt...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 3GTU9DED8MG450006
Stock: MG450006
Certified Pre-Owned: No
Listed since: 01-17-2025 - New Listing$40,000fair price$253 above market
- 58,900 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 5.3l, 8cyl
- McDonald Hyundai (9 mi away)
- Home delivery*
Close
Located in Highlands Ranch, CO / 9 miles away from Denver, CO
58K Miles ** 2021 GMC Sierra 1500 Elevation ** 4WD ** X31 Off-Road Package ** 10-Speed Automatic, EcoTec3 5.3L V8, Apple CarPlay/Android Auto, Dual Ex...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTU9CED3MG204927
Stock: HPMG204927
Certified Pre-Owned: No
Listed since: 04-22-2025 - New Listing$43,397fair price$504 above market
- 46,041 miles
- 1 accident, 3 owners, personal use only
- 5'10” bed, 6.2l, 8cyl
- ClearShift (9 mi away)
Close
Located in Highlands Ranch, CO / 9 miles away from Denver, CO
2021 GMC Sierra 1500 AT4 Ebony Twilight Metallic 4WD EcoTec3 6.2L V8 10-Speed AutomaticCall us today to speak with one of our friendly Purchase Gui...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 3GTP9EEL7MG413281
Stock: 413281T
Certified Pre-Owned: No
Listed since: 02-08-2025 - 89,340 miles
- No accidents, 2 owners, personal use only
- 6'7” bed, 3l, 6cyl
- Johnson Auto Plaza (19 mi away)
Close
Located in Brighton, CO / 19 miles away from Denver, CO
2021 GMC Sierra 1500 AT4 Summit White 4WD 3.0L I6 10-Speed Automatic10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.22/26 City/H...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
24 Combined MPG (22 City/26 Highway)
Listing Information:
VIN: 1GTU9EET8MZ398549
Stock: G538785A
Certified Pre-Owned: No
Listed since: 03-24-2025- 90,627 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 3l, 6cyl
- Daniels Long Chevrolet (61 mi away)
Close
Located in Colorado Springs, CO / 61 miles away from Denver, CO
THIS VEHICLE IS LOCATED AT DANIELS LONG CHEVROLET 670 AUTOMOTIVE DR 80905,PLEASE CALL (719)228-3500, 10-Speed Automatic, 4WD, Jet Black With Kalahari ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
Listing Information:
VIN: 1GTU9EET3MZ229135
Stock: 9782
Certified Pre-Owned: No
Listed since: 02-04-2025
Showing 1 - 21 out of 993 listings
Consumer Reviews for the GMC Sierra 1500
Read recent reviews for the GMC Sierra 1500
Valve lifter problem
Rod, 09/02/2021
2021 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 10A)
I have a 2021 GMC 5.3L w/10spd transmission. I pull a 21’ cargo trailer w/2 Polaris Trail Rzr’s. Yesterday at 13,800 miles the valve lifter on #5 cylinder went out. We were 80 miles from home in the middle of no-where. We limped home.
The truck is beautiful, pulls great and gets good mileage, but GM should let customers know about this kind of potential problem.
The dealer told me … today that it could take a month to get parts and get it fixed. I need the truck almost every day, but now I walk for a month! NOT HAPPY! I’ve been a GMC customer for 35 years and bought north of 17 new pickups. Never had this problem. When this is fixed I will have to look at other brands.
Used 2021 GMC Sierra 1500 in Denver, CO Values
Estimated values
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 5.8 ft. SB (6.2L 8cyl 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $32,995 | $35,143 | $37,304 |
| Clean | $32,391 | $34,465 | $36,548 |
| Average | $31,385 | $33,335 | $35,287 |
| Rough | $30,076 | $31,866 | $33,648 |
The average list price of a used 2021 GMC Sierra 1500 in Denver, Colorado is $39,191. The average mileage on a used GMC Sierra 1500 2021 for sale in Denver, Colorado is 77,214. Based on the average mileage of 77,214 for used 2021 GMC Sierra 1500 for sale in Denver, CO and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Sierra 1500 2021 in Denver, Colorado to be $31,385.
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