2020 GMC Sierra 1500 transmission — (AT), 4x4, 2.7L price snapshot
- Low
- $2,400
- Average
- $3,257
- High
- $5,275

Year & trim-specific price guide
A used 2020 GMC Sierra 1500 transmission ((AT), 4x4, 2.7L) costs $2,400 to $5,275, with a median asking price of $3,020. Based on 43 priced salvage yard listings across the US, updated Aug 3, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $2,946–$5,275 | 17 | |
| Grade BStandard used | $2,400–$4,169 | 26 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $2,400–$5,275 overall range
Trim-specific context
This pricing covers the (AT), 4x4, 2.7L variant of the 2020 GMC Sierra 1500 transmission, based on 43 priced listings. Its $3,020 median is 5% above the 2020 GMC Sierra 1500 transmission overall median of $2,883.
There are 11 other transmission variants available for the 2020 GMC Sierra 1500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Same year, other trims
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Common questions
Based on 43 priced salvage-yard listings, a used 2020 GMC Sierra 1500 transmission in the (AT), 4x4, 2.7L variant lists between $2,400 and $5,275, with a median asking price of $3,020.
The (AT), 4x4, 2.7L variant appears in model years 2020, 2021, 2023, 2024, 2025. Prices and availability may differ by year.