2018 GMC Terrain transmission — (AT), FWD, 1.6L price snapshot
- Low
- $1,490
- Average
- $2,267
- High
- $3,507

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 2018 GMC Terrain transmission ((AT), FWD, 1.6L) costs $1,490 to $3,507, with a median asking price of $2,076. Based on 48 priced salvage yard listings across the US, updated Sep 14, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $1,490–$3,507 | 43 | |
| Grade BStandard used | $1,854–$1,934 | 3 | |
| Grade XUngraded | $1,500–$1,900 | 2 |
Median by grade
Median asking price by seller-reported condition grade · $1,490–$3,507 overall range
Trim-specific context
This pricing covers the (AT), FWD, 1.6L variant of the 2018 GMC Terrain transmission, based on 48 priced listings. Its $2,076 median is 154% above the 2018 GMC Terrain transmission overall median of $818.
There are 5 other transmission variants available for the 2018 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
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Common questions
Based on 48 priced salvage-yard listings, a used 2018 GMC Terrain transmission in the (AT), FWD, 1.6L variant lists between $1,490 and $3,507, with a median asking price of $2,076.
The (AT), FWD, 1.6L variant appears in model years 2018, 2019. Prices and availability may differ by year.