Used 2020 GMC Sierra HD Price in the US
A used 2020 GMC Sierra HD in the US typically lists for $38,824–$53,967, with a median asking price of $49,118 across 12 active US dealer listings (as of 2026-09-03). The cheapest one listed right now is $30,494, a 2020 Base in Logan, UT — below 95% of the market, so expect an older model year, a base trim or high mileage.
Browse by model year
cheapest per year- All years
- 2026 · from $47,930
- 2025 · from $25,000
- 2024 · from $27,999
- 2023 · from $24,999
- 2022 · from $16,980
- 2021 · from $44,995
- 2020 · from $29,977
- 2019 · from $13,995
- 2018 · from $28,990
- 2017 · from $18,245
- 2016 · from $33,972
- 2015 · from $41,190
- 2013 · from $11,500
- 2012 · from $22,846
- 2011 · from $15,000
- 2009 · from $14,999
- 2005 · from $15,990
- 2001 · from $12,600
- 2000 · from $9,484
Cheapest 10 listed right now
ranked by price-
-
$36,9422020 GMC Sierra HD SLT123,945 mi · Austin, TX · Covert Chrysler Dodge Jeep Ram FCAView listing →
-
-
-
$48,9952020 GMC Sierra HD Denali104,825 mi · Katy, TX · Carsandpickups.com - HoustonView listing → -
-
$50,5992020 GMC Sierra HD Denali102,840 mi · Parker, CO · Rocky Mountain Eurosport - ParkerView listing →
-
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2020 GMC Sierra HD asks $38,824–$53,967. Cars this far under usually carry an older model year, a base trim or high mileage.
Deals on the map
9 pinnedFAQ
How much does a used 2020 GMC Sierra HD cost?
A used 2020 GMC Sierra HD in the US typically lists for $38,824 to $53,967, with a median asking price of $49,118 across 12 active US dealer listings. Nine in ten are priced between $34,040 and $60,052 (as of 2026-09-03, source: UnderMarket Cars).
Is $49,000 a good price for a used 2020 GMC Sierra HD?
That sits at about the market median ($49,118) for a used 2020 GMC Sierra HD. Under $38,824 puts you in the cheapest quarter of active US listings and under $34,040 in the cheapest 5%; above $60,052 is the priciest 5% (as of 2026-09-03).
What is the cheapest used 2020 GMC Sierra HD for sale right now?
$30,494 — a 2020 GMC Sierra HD Base in Logan, UT, $18,624 under the median (as of 2026-09-03).
Are these MSRP or real asking prices?
Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.
How often are prices updated?
UnderMarket Cars refreshes US dealer listings continuously and re-generates this used 2020 GMC Sierra HD price page at least twice a day. The data date shown on this page is 2026-09-03.
Explore more
Prices updated 2026-09-03. Data covers active dealer listings across the USA.