Used 2020 GMC Sierra 1500 for Sale nearModesto, CA
Shop with transparent pricing.
Only show listings that include dealer fees- 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
Sponsored by Lehmer's Concord GMC
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
114,212 mi
$32,030
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Fuel type:
- Gasoline
- Mileage:
- 137,338
- Stock #:
- C237003
- VIN:
- 3GTU9DED2LG237003
Sponsored Listing
2020 GMC Sierra 1500
SLT Crew Cab 4WD
137,338 mi
$26,580
- 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:
- Black
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 71,426
- Stock #:
- GT23325
- VIN:
- 3GTP9EEL9KG264949
Sponsored Listing
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
71,426 mi
$39,334
- 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
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 17,313
- Stock #:
- 33449U
- VIN:
- 1GTR9BED8MZ266842
2021 GMC Sierra 1500
SLE Double Cab 4WD
17,313 mi
$39,995
- 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
- Transmission:
- Automatic
- Mileage:
- 85,435
- Stock #:
- G140176T
- VIN:
- 3GTU9DET7MG140176
2021 GMC Sierra 1500
SLT Crew Cab 4WD
85,435 mi
$34,978
- 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:
- Onyx Black
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 89,475
- Stock #:
- 26DC0912A
- VIN:
- 1GTP9EED0MZ394419
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
89,475 mi
$37,887
- 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:
- Quicksilver Metallic
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 71,244
- Stock #:
- Z116114P
- VIN:
- 1GTU9DED0KZ116114
2019 GMC Sierra 1500
SLT Crew Cab 4WD
71,244 mi
$33,075
- 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:
- White Frost Tricoat
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 98,040
- Stock #:
- PKZ342807A
- VIN:
- 1GTU9FED5KZ342807
2019 GMC Sierra 1500
Denali Crew Cab 4WD
98,040 mi
$32,172
- 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
2020 GMC Sierra 1500
AT4 Crew Cab 4WD
114,212 mi
$32,030
- 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:
- Quicksilver Metallic
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 93,348
- Stock #:
- 7153
- VIN:
- 1GTU9FEL8KZ362251
2019 GMC Sierra 1500
Denali Crew Cab 4WD
93,348 mi
$37,550
- 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:
- Onyx Black
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black With Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 56,017
- Stock #:
- MG424787P
- VIN:
- 3GTP9EED5MG424787
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
56,017 mi
$39,973
- 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
- Combined gas mileage:
- 24 MPG
- Fuel type:
- Diesel
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 100,622
- Stock #:
- 26140
- VIN:
- 3GTU9EET6MG141972
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
100,622 mi
$33,159
- 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
- Transmission:
- Automatic
- Mileage:
- 74,148
- Stock #:
- G70664A
- VIN:
- 3GTU9FET7MG286430
2021 GMC Sierra 1500
Denali Crew Cab 4WD
74,148 mi
$38,646
CarGurus Analysis:
2020 GMC Sierra 1500
With 6,351 currently listed for sale and an average price of $33,918.00, 31.9% 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 and CarGurus experts gave it an 8.33 / 10.
78.0% of 2020 Sierra 1500 models on CarGurus are accident free.
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Gray ([G9K] Satin Steel Metallic)
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 81,967
- Stock #:
- 429321S
- VIN:
- 3GTP8CED7MG429321
![Gray ([G9K] Satin Steel Metallic) 2021 GMC Sierra 1500 Pickup Truck 4X2 Automatic](https://static.cargurus.com/images/forsale/2026/07/21/00/53/2021_gmc_sierra_1500-pic-1893669609271900696-1024x768.jpeg?io=true&width=640&height=480&fit=bounds&format=jpg&auto=webp)
2021 GMC Sierra 1500
Elevation Crew Cab RWD
81,967 mi
$31,490
- Year:
- 2020
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Fuel type:
- Gasoline
- Mileage:
- 137,338
- Stock #:
- C237003
- VIN:
- 3GTU9DED2LG237003
2020 GMC Sierra 1500
SLT Crew Cab 4WD
137,338 mi
$26,580
- 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:
- Gray (Satin Steel Metallic)
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 51,337
- Stock #:
- LG333329
- VIN:
- 3GTU9FEL4LG333329
-$1,233
2020 GMC Sierra 1500
Denali Crew Cab 4WD
51,337 mi
$42,991
$41,758
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 355 hp 5.3L V8
- Exterior color:
- Onyx Black
- Combined gas mileage:
- 20 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 126,388
- Stock #:
- 282886
- VIN:
- 1GTP8FED0KZ282886
2019 GMC Sierra 1500
Denali Crew Cab RWD
126,388 mi
$29,127
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- 4X2
- Engine:
- 310 hp 2.7L I4
- Exterior color:
- Silver
- Combined gas mileage:
- 21 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 70,855
- Stock #:
- 343734
- VIN:
- 1GTP8CEK9MZ343734
2021 GMC Sierra 1500
Elevation Crew Cab RWD
70,855 mi
$29,269
- 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:
- Summit White
- Combined gas mileage:
- 17 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 70,113
- Stock #:
- KG183970T
- VIN:
- 3GTU9DEL4KG183970
2019 GMC Sierra 1500
SLT Crew Cab 4WD
70,113 mi
$34,851
- 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
- Transmission:
- Automatic
- Mileage:
- 34,550
- Stock #:
- PTMG123560
- VIN:
- 3GTU9FET6MG123560
2021 GMC Sierra 1500
Denali Crew Cab 4WD
34,550 mi
$45,881
- 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 w/Kalahari Accents
- Transmission:
- Automatic
- Mileage:
- 59,826
- Stock #:
- A232294A
- VIN:
- 3GTU9EETXMG139884
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
59,826 mi
$42,022
- Year:
- 2021
- 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:
- Jet Black
- Transmission:
- Automatic
- Mileage:
- 53,035
- Stock #:
- MG430254T
- VIN:
- 3GTU9FEL0MG430254
2021 GMC Sierra 1500
Denali Crew Cab 4WD
53,035 mi
$43,389
- 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:
- Quicksilver Metallic
- Combined gas mileage:
- 18 MPG
- Fuel type:
- Gasoline
- Interior color:
- Jet Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 71,244
- Stock #:
- Z116114P
- VIN:
- 1GTU9DED0KZ116114
Sponsored Listing
2019 GMC Sierra 1500
SLT Crew Cab 4WD
71,244 mi
$33,075
CarGurus Analysis: 2020 GMC Sierra 1500
overall
Summary
With 6,351 currently listed for sale and an average price of $33,918.00, 31.9% 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 and CarGurus experts gave it an 8.33 / 10.
78.0% of 2020 Sierra 1500 models on CarGurus are accident free.
Why it stands out
The 2020 GMC Sierra 1500 stands out because it reflects how far pickup trucks have come. Rather than feeling like a bare-bones work vehicle, it offers many of the creature comforts buyers now expect from SUVs and crossovers, while still keeping the utility-minded features that make modern trucks more useful. The AT4 trim in particular is described as comfortable and capable, which gives it a broader appeal than a truck focused only on job-site duty.
It also has practical strengths that matter to shoppers comparing full-size pickups. The available powertrain choices are a plus, and the truck’s technology is noted for being easy to use. At the same time, it is not presented as perfect: advanced safety features are not standard, so buyers who want the most comprehensive driver-assistance equipment may need to look carefully at how it is equipped. Overall, the 2020 Sierra 1500 is distinctive for blending everyday comfort, capability, and modern truck convenience in a way that suits both commuting and work.
Other model years to consider
- Average price: $42,914.00
- Good/great deal percentage: 34.2%
- User rating: 5 / 5
- Total listings: 9,540
- Average price: $51,600.00
- Good/great deal percentage: 34.5%
- User rating: 5 / 5
- Total listings: 9,660
- Average price: $49,345.00
- Good/great deal percentage: 34.8%
- User rating: 4.64 / 5
- Total listings: 9,708
This analysis is based on CarGurus' proprietary market data from August 10, 2026, CarGurus experts' opinions, and generative AI.
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.
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!!!
Garry R
Reviewed a 2020 GMC Sierra 1500 on Feb 12, 2022
Great design and tecnology. Spacious and smooth ride. Comfortable for passengers and driver. The Denali leaves nothing to be desired.
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 |
| AT4 Crew Cab 4WD | $53,700 |
| Denali Crew Cab 4WD | $58,600 |
| 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 Boston: The average price in Boston, MA ($38,580) is the highest among the listed cities, indicating strong demand or limited supply in that market.
- Lowest Prices in 2015 Sierra: The average price in Chicago, IL ($30,241) is the lowest, suggesting a more competitive market or higher inventory levels.
- Inventory Variation: Cities like Atlanta (651 listings) and Houston (641 listings) have substantial inventory, which may contribute to more stable pricing around the national average.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Boston, MA | 465 | $38,580 |
| Philadelphia, PA | 488 | $38,004 |
| New York, NY | 466 | $34,509 |
| Washington, DC | 485 | $33,474 |
| Houston, TX | 641 | $33,176 |
| Los Angeles, CA | 351 | $32,776 |
| Dallas, TX | 210 | $31,744 |
| Atlanta, GA | 651 | $31,498 |
| Miami, FL | 385 | $30,605 |
| Chicago, IL | 616 | $30,241 |
Pricing Analysis by Model Year
Key Insights
- Significant Premium for New Models: The 2026 GMC Sierra 1500 is priced at $59,764, which is 56.7% above its MSRP, indicating strong demand for the latest model.
- Depreciation Trends: Older models show a consistent decline in value, with the 2015 model down 28.4% from its original MSRP, reflecting typical depreciation patterns.
- Best Value in Recent Models: The 2022 model is priced at $42,998, only 21.1% below MSRP, suggesting it offers a good balance of price and features for buyers.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2026 | $38,300 | $59,764 | +56.7% |
| 2025 | $38,300 | $52,445 | +37.0% |
| 2024 | $37,700 | $49,828 | +32.2% |
| 2023 | $37,100 | $46,143 | +24.4% |
| 2022 | $35,400 | $42,998 | +21.1% |
| 2021 | $30,100 | $35,508 | +17.8% |
| 2019 | $29,600 | $31,805 | +7.4% |
| 2018 | $29,000 | $26,368 | -9.0% |
| 2017 | $28,405 | $23,483 | -17.4% |
| 2016 | $27,815 | $20,743 | -25.4% |
| 2015 | $26,670 | $19,092 | -28.4% |
These recommendations are based on CarGurus' proprietary market data from August 6, 2026, CarGurus experts' opinions, and generative AI.
FAQs
How much does the 2020 GMC Sierra 1500 cost in Modesto, CA?
Is the 2020 GMC Sierra 1500 a good car?
How many 2020 GMC Sierra 1500 vehicles in Modesto, CA have no reported accidents or damage?
Is the 2020 GMC Sierra 1500 safe?
What is the fuel economy of the 2020 GMC Sierra 1500?
What fuel types are available?
Relevant articles
Best Truck Lease Deals in August 2026
Leasing a truck can be a great way to get into one of the latest models, with the best technology, at a more affordable monthly price. Here are the best deals we've found this month.
Best Car Deals in August 2026
In the market for a new or used car this year? Whether you’re looking to buy or lease, we’ve collated a list of the best car deals available this month.
The Best Gas Mileage Trucks of 2026
No one wants to cover unnecessary fuel expenses, particularly when operating a business. Here are the top 9 pickup trucks in the US market with the best fuel efficiency.
