2020 GMC Sierra 1500 Depreciation

A 6-year-old 2020 GMC Sierra 1500 has lost about 33.1% of its roughly $50,500 original value. In the 2026 source cohort, it typically listed for around $34,086, with most listings between $29,277 and $39,999. Listed examples average 88,522 miles.

GMC Sierra 1500 exterior
Image: Auto Reliability Index

2020 GMC Sierra 1500 Price by Mileage

What buyers actually pay at different odometer readings.

30k–50k mi
$41,145· 15 listings
50k–75k mi
$38,221· 53 listings
75k–100k mi
$35,215· 69 listings
100k–130k mi
$32,327· 48 listings
Over 130k mi
$28,145· 19 listings

How Mileage Affects 2020 GMC Sierra 1500 Price

Each dot is a real listing — price plotted against odometer reading.

2020 GMC Sierra 1500 median price by mileage band
MileageMedian priceListings
30k–50k mi$41,14515
50k–75k mi$38,22153
75k–100k mi$35,21569
100k–130k mi$32,32748
Over 130k mi$28,14519

What's a Good Price for a 2020 GMC Sierra 1500?

Great deal

Under $32,031

Typical

$32,031$38,372

Overpriced

Above $38,372

Based on the middle 50% of listings — always adjust for mileage and condition.

Price Spread

Range across 208 listings.

Low $25,887High $42,262

Half of all listings fall between $32,031 and $38,372, with a median of $35,105.

Ownership & Condition

Across 208 2020 GMC Sierra 1500 listings.

Accident-free

66.7%

One-owner

33.3%

Avg owners

2.3

Personal use

33.3%

Certified (CPO)

3.8%

CPO premium

+$1,050

2020 GMC Sierra 1500 Efficiency & Specs

EPA fuel-economy and powertrain data.

Combined

20 MPG

City / Hwy

18 / 24

Fuel / year

$3,450

Fuel

Diesel

Engine

3.0L 6-cyl

EPA class

Standard Pickup Trucks 2WD

Depreciation by Trim

See how each 2020 GMC Sierra 1500 trim holds its value.

TrimFuelMSRPMedian ResaleDepreciationListings
ElevationGasoline$46,000$29,42431.5%20
AT4Gasoline$53,400$36,02731.7%32
SLTGasoline$50,500$33,85031.8%53
SLEGasoline$43,500$27,64534.6%12
DenaliGasoline$58,500$38,77937.8%33

How the 2020 GMC Sierra 1500 Compares to Other Years

At 33.1% depreciation, the 2020 GMC Sierra 1500 sits among its neighbors on the depreciation curve. The one-year-newer 2021 has lost 31.6% (around $35,689), so stepping up a model year costs roughly $1,603 more. The older 2019 sits at 38.5% (around $32,858), so dropping back a year saves about $1,228. Buying one model year newer or older is one of the easiest ways to trade purchase price against age and remaining warranty.

Safety Ratings

NHTSA crash test ratings for the 2020 GMC Sierra 1500.

Overall
Frontal Crash
Side Crash
Rollover

View full NHTSA report

Known Issues & Complaints

433 NHTSA complaints, 12 recalls reported.

ENGINE

142 complaints

My 2020 GMC Sierra 1500 Denali with L87 6.2L V8 suffered a catastrophic, silent seizure at 108,000 miles. Driving at highway speeds, warning light stating shift to neutral and press start, engine completely shut off and would not turn back

POWER TRAIN

82 complaints

The contact owns a 2020 GMC Sierra 1500. The contact stated that upon taking the vehicle to the dealer for a transmission fluid flush and refill, the contact was informed that the transmission was inoperable, and the vehicle could not be dr

ELECTRICAL SYSTEM

50 complaints

Fire started under passenger side front seat dashboard when rear defrost was turned on.

2 fires1 injury

STEERING

37 complaints

- THE GROUND STRAP CORRODED AND BROKE APART. YES, I HAVE THE GROUND CABLE THAT FAILED, IF NEEDED FOR INSPECTION. - YES!!! THE TRUCK'S STEERING KEPT GOING IN AND OUT OF MANUAL STEERING AND THE ENGINE REDUCED IN SPEED ALLOWED, AND THEN THE EN

1 crash1 injury

SERVICE BRAKES

24 complaints

The brakes suddenly activate and cause the vehicle to rapidly stop with no warning of any kind and without any braking action being taken by the driver. Then, the brakes do not release and the vehicle cannot be moved as the brakes remain on

2 crashes1 fire2 injuries

UNKNOWN OR OTHER

21 complaints

Transmission 10l80 stuck solenoid truck has hesitation delayed shifting. And will not shift after certain gears.

Top Issues

  • ENGINE
  • POWER TRAIN
  • ELECTRICAL SYSTEM
  • STEERING
  • SERVICE BRAKES

Buyer Red Flags

  • !Recall 21V115000 (TIRES): General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chev
  • !Recall 19V888000 (ELECTRICAL SYSTEM): General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. The battery positive (B+) cable rings may have been manufactured with ex
  • !Recall 20V792000 (SEAT BELTS): General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Sil
  • !Recall 20V684000 (TIRES): General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500 ve

2020 GMC Sierra 1500 Listings

Real 2020 Sierra 1500 listings on the market now.

Live dealer listings, refreshed periodically. Prices and availability change.

Frequently Asked Questions

How much is a 2020 GMC Sierra 1500 worth?

A 2020 GMC Sierra 1500 is typically worth around $34,086, with most listings falling between $29,277 and $39,999. The single biggest swing factor is mileage — listed examples average about 88,522 miles, and each additional 10,000 miles shaves a few percent off the price. Condition, accident history, trim, and how many owners a car has had move the number from there. Treat the median as a fair starting point and adjust up for a clean, low-mileage, one-owner car or down for higher mileage and any reported damage.

How much has the 2020 GMC Sierra 1500 depreciated?

The 2020 GMC Sierra 1500 has lost about 33.1% of its original $50,500 base MSRP — roughly $16,716 in value, after adjusting listing prices to typical mileage for the age. Most of a car's lifetime depreciation happens in its earliest years, so a vehicle of this age has usually weathered the steepest part of the curve already. That's what makes a well-kept example at this age an efficient buy: you let the original owner absorb the fastest depreciation, then enjoy a much slower decline from here.

How many miles does a used 2020 Sierra 1500 have?

Listed 2020 Sierra 1500s average about 88,522 miles, with most between 59,045 and 118,044. As a rule of thumb, "average" mileage for any car is roughly 12,000 miles per year of age, so compare a specific listing against that benchmark. A below-average odometer commands a premium and an above-average one a discount, but a higher-mileage car with complete service records and one owner can be a better buy than a low-mileage car with gaps in its history. Consistent maintenance does more for a car's remaining lifespan than a low number on the odometer alone.

Is a certified 2020 Sierra 1500 worth the extra cost?

Certified pre-owned 2020 Sierra 1500s sell for roughly $1,050 more than comparable non-certified examples. In exchange you get a manufacturer-backed multi-point inspection, a reconditioning standard, and an extended warranty that can outlast the original coverage. Whether it's worth it depends on how long you'll keep the car: on a vehicle you plan to own for years the warranty often pays for itself, while on a short-term purchase the premium is harder to justify and a trusted independent inspection may give you most of the peace of mind for less.

What is a good price for a 2020 GMC Sierra 1500?

For a 2020 GMC Sierra 1500, anything under $32,031 is a strong deal, $32,031 to $38,372 is the typical range where most cars trade, and above $38,372 is on the expensive side — those higher prices usually buy lower mileage, a certified warranty, or a premium trim. Always weigh the asking price against the car's specific mileage and condition rather than the sticker alone: a slightly higher price for a clean, one-owner, accident-free example is often money well spent. And treat a listing priced well below the range as a prompt to dig deeper — unusually cheap cars almost always have a reason, whether it's high mileage, accident history, or a branded title.

Methodology

Figures for the 2020 GMC Sierra 1500 are computed from 150 real used-car listings. Each asking price is normalized to a standard 12,000 miles per year for the car's age, adjusted by a 5% asking-to-sale estimate, and compared against the original base MSRP for that VIN's trim. Full methodology. Updated August 2026.