2018 GMC Terrain transmission — (AT), FWD, 1.5L price snapshot
- Low
- $175
- Average
- $444
- High
- $1,000
Year & trim-specific price guide
Used 2018 GMC Terrain Transmission — (AT), FWD, 1.5L prices
Trim-specific pricing for the (AT), FWD, 1.5L variant of the 2018 GMC Terrain transmission, built from 45 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
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.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedSep 14, 2026AS
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.
Price summary
A used 2018 GMC Terrain transmission ((AT), FWD, 1.5L) costs $175 to $1,000, with a median asking price of $465. Based on 45 priced salvage yard listings across the US, updated Sep 14, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$529
Grade B (good)$288
USD
Condition comparison
Price by part grade
Grade AClean / low wear$221–$1,00021 listings
Grade BStandard used$175–$56919 listings
Grade XUngraded$550–$6505 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $221–$1,000 | 21 | |
| Grade BStandard used | $175–$569 | 19 | |
| Grade XUngraded | $550–$650 | 5 |
Median by grade
Grade price comparison
Grade A$529
Grade B$288
Ungraded$600
Median asking price by seller-reported condition grade · $175–$1,000 overall range
Trim-specific context
How does the (AT), FWD, 1.5L compare?
This pricing covers the (AT), FWD, 1.5L variant of the 2018 GMC Terrain transmission, based on 45 priced listings. Its $465 median is 43% below 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
(AT), FWD, 1.5L in other model years
Same year, other trims
What other 2018 GMC Terrain transmission variants are available?
Back to full guide
2018 GMC Terrain transmission — all trims
Common questions
2018 GMC Terrain transmission ((AT), FWD, 1.5L) FAQ
How much is a used 2018 GMC Terrain transmission ((AT), FWD, 1.5L)?
Based on 45 priced salvage-yard listings, a used 2018 GMC Terrain transmission in the (AT), FWD, 1.5L variant lists between $175 and $1,000, with a median asking price of $465.
Which years use the (AT), FWD, 1.5L transmission?
The (AT), FWD, 1.5L variant appears in model years 2018, 2019, 2020. Prices and availability may differ by year.