2021 GMC Terrain transmission — (AT), FWD price snapshot
- Low
- $175
- Average
- $465
- High
- $900

Year & trim-specific price guide
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
A used 2021 GMC Terrain transmission ((AT), FWD) costs $175 to $900, with a median asking price of $465. Based on 47 priced salvage yard listings across the US, updated Sep 23, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $221–$900 | 25 | |
| Grade BStandard used | $175–$564 | 17 | |
| Grade XUngraded | $550–$650 | 5 |
Median by grade
Median asking price by seller-reported condition grade · $175–$900 overall range
Trim-specific context
This pricing covers the (AT), FWD variant of the 2021 GMC Terrain transmission, based on 47 priced listings. Its $465 median is 7% below the 2021 GMC Terrain transmission overall median of $500.
There is 1 other transmission variant available for the 2021 GMC Terrain.
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
Back to full guide
Common questions
Based on 47 priced salvage-yard listings, a used 2021 GMC Terrain transmission in the (AT), FWD variant lists between $175 and $900, with a median asking price of $465.
The (AT), FWD variant appears in model years 2021, 2023, 2024. Prices and availability may differ by year.