Used 2020 GMC Sierra 1500 for Sale near Modesto, CA
338 results
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 59,615
- Stock #:
- MG461022T
- VIN:
- 3GTU9CET4MG461022
Sponsored by Livermore Ford Lincoln
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
59,615 mi
$34,999
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- White
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 6-Speed Automatic
- Mileage:
- 102,062
- Stock #:
- 26053
- VIN:
- 3GTP8AEF4MG244813
Sponsored Listing
2021 GMC Sierra 1500
Crew Cab RWD
102,062 mi
$23,499
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 72,109
- Stock #:
- MG229397A
- VIN:
- 3GTU9EET0MG229397
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
72,109 mi
$38,400
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 81,854
- Stock #:
- MG281269T
- VIN:
- 3GTU9EET9MG281269
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
81,854 mi
$38,070
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 310 hp 2.7L I4
- Exterior color:
- Gray
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 140,100
- Stock #:
- 25939
- VIN:
- 3GTP9CEK2LG400626
2020 GMC Sierra 1500
Elevation Crew Cab 4WD
140,100 mi
$22,998
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Quicksilver Metallic
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 67,881
- Stock #:
- 73045DAA
- VIN:
- 3GTU9CED3MG285380
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
67,881 mi
$33,775
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 310 hp 2.7L I4
- Exterior color:
- White
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 77,888
- Stock #:
- 360213A
- VIN:
- 1GTR8AEK0MZ176080
2021 GMC Sierra 1500
Double Cab RWD
77,888 mi
$21,832
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Summit White
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 107,849
- Stock #:
- 21200
- VIN:
- 3GTU9CET2MG266522
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
107,849 mi
$31,082
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 26 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 93,993
- Stock #:
- 5413
- VIN:
- 3GTP8CET6MG339259
2021 GMC Sierra 1500
Elevation Crew Cab RWD
93,993 mi
$29,626
- 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:
- Black
- Transmission:
- Automatic
- Mileage:
- 74,427
- Stock #:
- 26G285A
- VIN:
- 1GTU9FEL8KZ149056
2019 GMC Sierra 1500
Denali Crew Cab 4WD
74,427 mi
$39,785
- Year:
- 2020
- 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:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 80,864
- Stock #:
- LZ102103
- VIN:
- 1GTU9FED6LZ102103
2020 GMC Sierra 1500
Denali Crew Cab 4WD
80,864 mi
$35,882
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 64,293
- Stock #:
- P8595
- VIN:
- 3GTU9BET8MG432553
2021 GMC Sierra 1500
SLE Crew Cab 4WD
64,293 mi
$32,755
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Black
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 108,399
- Stock #:
- 120640
- VIN:
- 3GTP8DED6KG293086
2019 GMC Sierra 1500
SLT Crew Cab RWD
108,399 mi
$29,999
CarGurus Analysis:
2020 GMC Sierra 1500
With 6,365 currently listed for sale and an average price of $34,048.00, 32.0% of 2020 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Sierra 1500 4.28 / 5 stars.
76.1% of 2020 Sierra models on CarGurus are accident free.
The 2020 GMC Sierra 1500 features various trim levels, advanced technology, and multiple powertrain options, appealing to a wide range of truck buyers.
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 82,060
- Stock #:
- 85371
- VIN:
- 3GTP8DED5KG192623
2019 GMC Sierra 1500
SLT Crew Cab RWD
82,060 mi
$35,312
- Year:
- 2021
- 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
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- 8-Speed Automatic
- Mileage:
- 97,409
- Stock #:
- 1835
- VIN:
- 1GTR9CED7MZ413383
2021 GMC Sierra 1500
Elevation Double Cab 4WD
97,409 mi
$30,995
- 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
- Interior color:
- Black
- Mileage:
- 101,008
- Stock #:
- 707162
- VIN:
- 1GTU9FEL3KZ301504
2019 GMC Sierra 1500
Denali Crew Cab 4WD
101,008 mi
$35,354
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Smokey Quartz Metallic
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 89,000
- Stock #:
- 170506
- VIN:
- 1GTU8DED6LZ170506
2020 GMC Sierra 1500
SLT Crew Cab RWD
89,000 mi
$30,557
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- White
- Fuel type:
- Diesel
- Interior color:
- Black
- Mileage:
- 116,365
- Stock #:
- 7375
- VIN:
- 3GTU9CET9MG326313
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
116,365 mi
$29,820
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Quicksilver Metallic
- Combined gas mileage:
- 19 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 56,888
- Stock #:
- 260293A
- VIN:
- 3GTU9DED0LG444022
2020 GMC Sierra 1500
SLT Crew Cab 4WD
56,888 mi
$39,138
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior color:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 114,212
- Stock #:
- 260354A
- VIN:
- 3GTP9EELXLG439386
-$1,270
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
114,212 mi
$35,038
$33,768
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Cayenne Red Tintcoat
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 57,278
- Stock #:
- 6333T
- VIN:
- 3GTU9CET3MG348615
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
57,278 mi
$35,670
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 59,615
- Stock #:
- MG461022T
- VIN:
- 3GTU9CET4MG461022
2021 GMC Sierra 1500
Elevation Crew Cab 4WD
59,615 mi
$34,999
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 81,854
- Stock #:
- MG281269T
- VIN:
- 3GTU9EET9MG281269
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
81,854 mi
$38,070
CarGurus Analysis: 2020 GMC Sierra 1500
overall
Summary
With 6,365 currently listed for sale and an average price of $34,048.00, 32.0% of 2020 GMC Sierras for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2020 GMC Sierra 1500 4.28 / 5 stars.
76.1% of 2020 Sierra models on CarGurus are accident free.
The 2020 GMC Sierra 1500 features various trim levels, advanced technology, and multiple powertrain options, appealing to a wide range of truck buyers.
Why it stands out
The 2020 GMC Sierra 1500 distinguishes itself with a blend of utility and comfort, making it a versatile option for both work and everyday driving. Its available trim levels, including the rugged AT4, cater to diverse preferences, whether you prioritize off-road capability or luxury. Notable features such as the innovative carbon-fiber bed, the MultiPro tailgate, and a host of driver-assistance technologies enhance its functionality. Powering the Sierra are multiple engine choices, including a robust 6.2-liter V8, which delivers commanding performance and efficient towing capabilities of up to 12,100 pounds. While the Sierra offers an upscale cabin experience, its ride quality can be a bit firm due to off-road-focused suspension, which is worth considering for those prioritizing daily comfort over rugged utility. Overall, the GMC Sierra 1500 stands out for its seamless integration of luxury and capability, appealing to a broad spectrum of truck users.
Other model years to consider
- Average price: $53,062.00
- Good/great deal percentage: 34.4%
- User rating: 5 / 5
- Total listings: 9,644
- Average price: $43,579.00
- Good/great deal percentage: 33.1%
- User rating: 5 / 5
- Total listings: 9,332
- Average price: $50,280.00
- Good/great deal percentage: 34.2%
- User rating: 4.64 / 5
- Total listings: 9,711
This analysis is based on CarGurus' proprietary market data from June 22, 2026, CarGurus experts' opinions, and generative AI.
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4.3 Overall rating
Filter by rating
Jeremy S
Reviewed a 2020 GMC Denali Crew Cab 4WD on Nov 23, 2024
Great truck, great value, awesome vehicle accessories package. Highly recommend this truck.
Heriberto M
Reviewed a 2020 GMC Sierra 1500 on Jun 24, 2024
It’s a reliable truck great engine and just a great choice for pickup truck
Rodney C
Reviewed a 2020 GMC Sierra 1500 on Jun 30, 2025
Body dented and scratches, former work truck , transmission shutter , definitely abused, four wheel clunks when engaged , not a good value
Deborah E
Reviewed a 2020 GMC Sierra 1500 on Aug 7, 2022
Absolutely stunning vehicle. Pure luxury pick-up truck. Serious power, w/a 6.2L V8 engine; smooth, wonderful ride, lots of driver convenience & safety features; comfortable seating, roomy cab interior....I could go on. GMC has left nothing out of their Sierra Denali line. Beautiful truck - everyone Ive talked to feels the same. Commanding presence on the road. Tops Dodge Ram & Ford models, in my opinion. I have a 2020 model. The 2023 model tops even THAT!!!
2020 GMC Sierra 1500 Trims
| Trim type | MSRP |
|---|---|
| Elevation Crew Cab RWD | $42,900 |
| Elevation Double Cab 4WD | $43,800 |
| SLE Crew Cab 4WD | $43,700 |
| SLT Crew Cab RWD | $46,900 |
| Elevation Crew Cab 4WD | $46,200 |
| Denali Crew Cab 4WD | $58,600 |
| AT4 Crew Cab 4WD | $53,700 |
| SLT Crew Cab 4WD | $50,400 |
2020 GMC Sierra 1500 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2020 GMC Sierra 1500 prices has changed over time.
See more price trends2020 GMC Sierra 1500 Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest Prices in Chicago, IL: The average price of $35,622 indicates a strong demand in this area, possibly influenced by urban usage preferences and lower availability.
- Lowest Price in Miami, FL: With an average price of $29,275, this market suggests higher inventory levels and potentially greater price sensitivity among buyers.
- Inventory Levels Reflect Demand Trends: Chicago (600 listings) and Houston (600 listings) show significant stock but come with higher price points, indicating robust demand for such popular vehicles.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Chicago, IL | 600 | $35,622 |
| Philadelphia, PA | 480 | $34,370 |
| New York, NY | 453 | $32,343 |
| Dallas, TX | 214 | $31,919 |
| Houston, TX | 600 | $31,859 |
| Los Angeles, CA | 325 | $32,928 |
| Boston, MA | 462 | $33,094 |
| Atlanta, GA | 648 | $32,453 |
| Washington, DC | 472 | $33,235 |
| Miami, FL | 368 | $29,275 |
Pricing Analysis by Model Year
Key Insights
- Significant Price Increase for Newer Models: The 2026 GMC Sierra 1500 shows a current average price of $61,779, which is significantly elevated compared to its original MSRP of $38,300, indicating strong demand and premium pricing for new vehicles.
- Older Models See Sharp Depreciation: Most models from 2014 to 2019 exhibit considerable declines, with the 2014 model priced at just $17,073, reflecting a depreciation of roughly 34.8% from its MSRP.
- Recent Model Years Maintain Value: Models from 2019 onward show a trend of better retention, with the 2019 GMC Sierra being priced at $32,337, indicating only a 9.2% drop from MSRP.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 GMC Sierra 1500 | $38,300 | $61,779 | +61.0% |
| 2025 GMC Sierra 1500 | $38,300 | $53,819 | +40.6% |
| 2024 GMC Sierra 1500 | $37,700 | $50,736 | +34.6% |
| 2023 GMC Sierra 1500 | $37,100 | $46,662 | +25.7% |
| 2022 GMC Sierra 1500 | $35,400 | $43,627 | +23.1% |
| 2021 GMC Sierra 1500 | $30,100 | $36,307 | +20.5% |
| 2019 GMC Sierra 1500 | $29,600 | $32,337 | +9.2% |
| 2018 GMC Sierra 1500 | $29,000 | $26,496 | -8.3% |
| 2017 GMC Sierra 1500 | $28,405 | $23,516 | -17.3% |
| 2016 GMC Sierra 1500 | $27,815 | $21,074 | -24.3% |
| 2015 GMC Sierra 1500 | $26,670 | $19,687 | -26.1% |
| 2014 GMC Sierra 1500 | $26,075 | $17,073 | -34.8% |
These recommendations are based on CarGurus' proprietary market data from June 18, 2026, CarGurus experts' opinions, and generative AI.
