What a used GMC Sierra costs

GMC Sierra price by model year

A spread near 1.5× means the market agrees what a GMC Sierra of that year is worth. Past 3× the listings mix tidy examples with tired ones, and a careful buyer can do well — but the exact figure for one car depends on its mileage and history, which is what the valuation tool is for.

Dealer or private seller

On the GMC Sierra the forecourt markup works out at 27% over a private sale of the same year. Both figures are measured against the median for the same model year, so age is out of the comparison and what remains is the markup itself.

The gap comes to 26.6 percentage points. Some of that buys something real — reconditioning, a warranty, paperwork handled. The rest is the cost of not looking further.

What a branded title costs

A salvage or rebuilt title follows a car for life and shows up in every future sale. Here is what the market actually knocks off for it — again against the median of the same year.

⚠ A discount is not automatically a bargain: branded titles are harder to insure, harder to finance and much harder to sell on. Check the specific car before assuming the saving is real — run its VIN against the records.

How fast price falls with mileage

Taken from a single model year — 2025, the one with the most GMC Sierra listings — so the curve shows mileage alone rather than age creeping in alongside it. Between the 0–25k and 50–75k bands the asking price falls 12%.

Between the lowest and highest mileage bands the asking price falls 12%. Most of that drop happens early: the first hundred thousand miles cost far more than the second.

Which options hold value

The single biggest swing on a GMC Sierra is fuel: DIESEL asks +34% against the median of its own model year. Every figure here uses the same normalisation — an average premium or discount measured within each year, never across them.

Where it's cheaper

States where the GMC Sierra asks least and most, measured against the national median for each model year. Dearest is NM at +16%, cheapest MN at -11% — 27 points apart, which on a $28,880 car is roughly $7,740.

Only states with enough listings to mean something are shown. Rust-belt winters, local demand and how many were sold there originally all pull these numbers around.

How we count

The GMC Sierra figures here come from 10,191 live listings, 1990–2026 — asking prices, not sale prices. Sellers ask more than they get, so treat these as the top of the range, not the bottom.

Percentages here are never plain averages: each listing is first turned into its ratio against the median for its own model year, and those ratios are averaged instead. Without that step the numbers lie confidently — a flat average across 1990–2026 would mostly measure which years happen to be for sale this week. Slices too thin to survive the test are dropped rather than dressed up with an error bar, which for the GMC Sierra leaves 36 model years standing. The full method, with the traps it avoids →