Used 2018 GMC Sierra 1500 for Sale nearDenver, CO
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Blue
- Fuel type:
- Gasoline
- Transmission:
- 6-Speed Automatic
- Mileage:
- 97,873
- Stock #:
- 25982
- VIN:
- 3GTU2NEC6HG278856
Sponsored by Sterling Auto
2017 GMC Sierra 1500
SLT Crew Cab 4WD
97,873 mi
$23,950
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 133,019
- Stock #:
- 334979
- VIN:
- 1GTU9BED4KZ334979
Sponsored Listing
2019 GMC Sierra 1500
SLE Crew Cab 4WD
133,019 mi
$22,294
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Fuel type:
- Gasoline
- Transmission:
- 6-Speed Automatic
- Mileage:
- 120,746
- VIN:
- 3GTU2NEJ9JG468610
Sponsored Listing
2018 GMC Sierra 1500
SLT Crew Cab 4WD
120,746 mi
$25,708
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Dark Slate Metallic
- Fuel type:
- Gasoline
- Interior color:
- Dark Ash/Jet Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 68,745
- Stock #:
- 541416T
- VIN:
- 3GTU2NEC4JG541416
2018 GMC Sierra 1500
SLT Crew Cab 4WD
68,745 mi
$33,736
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Blue
- Fuel type:
- Gasoline
- Transmission:
- 6-Speed Automatic
- Mileage:
- 97,873
- Stock #:
- 25982
- VIN:
- 3GTU2NEC6HG278856
2017 GMC Sierra 1500
SLT Crew Cab 4WD
97,873 mi
$23,950
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Red Quartz Tintcoat
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Mileage:
- 97,807
- Stock #:
- P17940A
- VIN:
- 3GTU9FEL5KG247302
2019 GMC Sierra 1500
Denali Crew Cab 4WD
97,807 mi
$33,704
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Silver
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 90,481
- Stock #:
- 26186
- VIN:
- 3GTU2NECXJG107324
2018 GMC Sierra 1500
SLT Crew Cab 4WD
90,481 mi
$28,300
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 116,255
- Stock #:
- 621595
- VIN:
- 3GTU2NEC3JG621595
2018 GMC Sierra 1500
SLT Crew Cab 4WD
116,255 mi
$24,395
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 84,504
- Stock #:
- G148566
- VIN:
- 1GTU9FEL4KZ148566
2019 GMC Sierra 1500
Denali Crew Cab 4WD
84,504 mi
$35,350
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 133,019
- Stock #:
- 334979
- VIN:
- 1GTU9BED4KZ334979
2019 GMC Sierra 1500
SLE Crew Cab 4WD
133,019 mi
$22,294
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 73,933
- Stock #:
- 4160
- VIN:
- 1GTU9DED5KZ418031
2019 GMC Sierra 1500
SLT Crew Cab 4WD
73,933 mi
$33,967
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- White Frost Tricoat
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Cocoa/Dark Sand
- Transmission:
- 8-Speed Automatic
- Mileage:
- 154,736
- Stock #:
- JG546442
- VIN:
- 3GTU2PEJ5JG546442
2018 GMC Sierra 1500
Denali Crew Cab 4WD
154,736 mi
$23,276
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Brown
- Transmission:
- 8-Speed Automatic
- Mileage:
- 77,221
- Stock #:
- T18529
- VIN:
- 3GTU2PEJ4HG143806
2017 GMC Sierra 1500
Denali Crew Cab 4WD
77,221 mi
$33,998
CarGurus Analysis:
2018 GMC Sierra 1500
With 260 currently listed for sale near Denver, CO and an average price of $28,324.00, 22.3% of 2018 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Sierra 1500 4.44 / 5 stars and CarGurus experts gave it an 8.17 / 10.
69.6% of 2018 Sierra 1500 models on CarGurus are accident free.
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 108,567
- Stock #:
- 164443
- VIN:
- 3GTU2PEJ0HG164443
2017 GMC Sierra 1500
Denali Crew Cab 4WD
108,567 mi
$27,500
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Gray
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 38,846
- Stock #:
- MX5047
- VIN:
- 1GTP9EELXKZ340470
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
38,846 mi
$39,139
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Stone Blue Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 71,026
- Stock #:
- U17020
- VIN:
- 2GTV2MEC8J1112870
2018 GMC Sierra 1500
SLE Double Cab 4WD
71,026 mi
$27,593
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 79,906
- Stock #:
- P18007
- VIN:
- 3GTU2NEC3JG577615
2018 GMC Sierra 1500
SLT Crew Cab 4WD
79,906 mi
$32,744
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Red
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 101,537
- Stock #:
- 342013
- VIN:
- 3GTU2NEC3HG342013
2017 GMC Sierra 1500
SLT Crew Cab 4WD
101,537 mi
$27,194
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black w/Kalahari Accents
- Transmission:
- 8-Speed Automatic
- Mileage:
- 101,573
- Stock #:
- 28820
- VIN:
- 1GTP9EED4KZ417844
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
101,573 mi
$32,199
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Fuel type:
- Gasoline
- Interior color:
- Dark Ash w/Jet Black Accents
- Transmission:
- Automatic
- Mileage:
- 96,432
- Stock #:
- 57472
- VIN:
- 3GTU2NEC7JG314155
2018 GMC Sierra 1500
SLT Crew Cab 4WD
96,432 mi
$27,493
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Stone Blue Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black/Spice Red
- Transmission:
- 8-Speed Automatic Overdrive
- Mileage:
- 146,494
- Stock #:
- 463950T
- VIN:
- 3GTU2NEJ5HG463950
2017 GMC Sierra 1500
SLT Crew Cab 4WD
146,494 mi
$23,956
- Year:
- 2018
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 102,125
- Stock #:
- STETJG297618
- VIN:
- 3GTU2NEC0JG297618
2018 GMC Sierra 1500
SLT Crew Cab 4WD
102,125 mi
$26,791
- Year:
- 2017
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Red
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 99,869
- Stock #:
- 25865
- VIN:
- 3GTU2PEC0HG322796
Sponsored Listing
2017 GMC Sierra 1500
Denali Crew Cab 4WD
99,869 mi
$26,400
CarGurus Analysis: 2018 GMC Sierra 1500
overall
Summary
With 260 currently listed for sale near Denver, CO and an average price of $28,324.00, 22.3% of 2018 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 GMC Sierra 1500 4.44 / 5 stars and CarGurus experts gave it an 8.17 / 10.
69.6% of 2018 Sierra 1500 models on CarGurus are accident free.
Why it stands out
The 2018 GMC Sierra 1500 stands out as a full-size pickup that was kept relevant with more standard content and safety features just before a redesign. GMC also made the reversing camera and the previously optional infotainment system standard equipment, which gives this truck a stronger value story than its age might suggest.
That added equipment helps the Sierra 1500 appeal to buyers who want a truck that feels more modern and easier to live with. Owner feedback also points to a smooth ride, a luxurious feel, and a comfortable interior, along with praise for its power and fuel efficiency. At the same time, some owners mentioned missing features such as backseat vents and basic safety options, and a few raised concerns about engine performance and transmission issues.
Other model years to consider
- Average price: $43,609.00
- Good/great deal percentage: 27.9%
- User rating: 5 / 5
- Total listings: 563
- Average price: $50,576.00
- Good/great deal percentage: 41.1%
- User rating: 5 / 5
- Total listings: 275
- Average price: $58,003.00
- Good/great deal percentage: 22.2%
- User rating: 5 / 5
- Total listings: 333
This analysis is based on CarGurus' proprietary market data from August 11, 2026, CarGurus experts' opinions, and generative AI.
4.5 Overall rating
Filter by rating
Ryan A
Reviewed a 2018 GMC Sierra 1500 on Aug 5, 2025
Only thing i didn’t like is the gas mileage. Mine is slightly lifted though and averages about 13 miles to the gallon
Edward E
Reviewed a 2018 GMC Sierra 1500 on Feb 28, 2020
2018 GMC Sierra. Simply the best driving & riding truck I have ever owned. The magnetic ride sets it apart and was the reason I purchased a 2018 vs the newer body style without it. It’s also the reason I choose it over similar Ford and Dodge trucks.
Anonymous
Reviewed a 2018 GMC Sierra 1500 on Mar 3, 2021
very luxurious and drives incredible smooth.. Wouldnt know its a pickup truck
Jason J
Reviewed a 2018 GMC Sierra 1500 on Aug 20, 2022
Great truck, but not liking this heavy shudder from the torque converter.
2018 GMC Sierra 1500 Trims
| Trim type | MSRP |
|---|---|
| Base | $29,000 |
| SLT Double Cab 4WD | $46,000 |
| Base Double Cab 4WD | $37,000 |
| SLE Crew Cab 4WD | $44,700 |
| SLT Crew Cab | $45,200 |
| SLE Double Cab 4WD | $42,100 |
| Denali Crew Cab 4WD | $56,000 |
| SLT Crew Cab 4WD | $48,400 |
2018 GMC Sierra 1500 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 GMC Sierra 1500 prices has changed over time.
See more price trends2018 GMC Sierra 1500 Pricing Analysis: Denver, CO Market Report
Pricing by Nearby Locations
Market Area: Denver, CO
Key Insights
- Highest Prices in Cheyenne, WY: The market in Cheyenne shows the highest average price at $28,652, likely influenced by lower inventory and regional demand.
- Best Value in Grand Junction, CO: Grand Junction offers the lowest average price at $22,030, indicating a more price-sensitive market or higher inventory turnover.
- Stable Pricing Across Inventory: Markets like Castle Rock (272 listings) and Longmont (259 listings) maintain average prices around $27,811–$27,746, suggesting a balanced supply and demand.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Cheyenne, WY | 223 | $28,652 |
| Colorado Springs, CO | 233 | $28,119 |
| Castle Rock, CO | 272 | $27,811 |
| Longmont, CO | 259 | $27,746 |
| Fort Collins, CO | 217 | $27,470 |
| Laramie, WY | 217 | $28,497 |
| Pueblo, CO | 227 | $26,740 |
| Montrose, CO | 207 | $24,900 |
| Grand Junction, CO | 192 | $22,030 |
Pricing Analysis by Model Year
Key Insights
- Significant Premium for New Models: The 2026 GMC Sierra 1500 is priced at $58,995, which is 53.7% above MSRP, indicating strong demand for the latest model.
- Depreciation Trends: The 2017 model shows a notable depreciation of -13.7% compared to its original MSRP, while older models like the 2015 have depreciated by -20.6%.
- Best Value in Recent Models: The 2021 GMC Sierra 1500 is priced at $32,691, reflecting a modest depreciation of -8.3%, making it a potentially attractive option for buyers seeking value.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 | $38,300 | $58,995 | +53.7% |
| 2025 | $38,300 | $50,855 | +32.8% |
| 2024 | $37,700 | $49,905 | +32.3% |
| 2023 | $37,100 | $46,206 | +24.5% |
| 2022 | $35,400 | $43,832 | +23.7% |
| 2021 | $30,100 | $32,691 | -8.3% |
| 2020 | $29,600 | $34,134 | +15.3% |
| 2019 | $29,600 | $32,052 | +8.2% |
| 2017 | $28,405 | $24,525 | -13.7% |
| 2016 | $27,815 | $23,800 | -14.4% |
| 2015 | $26,670 | $21,176 | -20.6% |
These recommendations are based on CarGurus' proprietary market data from August 13, 2026, CarGurus experts' opinions, and generative AI.
FAQs
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