2018 GMC Terrain transmission control module — Temperature, ID 84221981 price snapshot
- Low
- $24
- Average
- $78
- High
- $138

Year & trim-specific price guide
A used 2018 GMC Terrain transmission control module (Temperature, ID 84221981) costs $24 to $138, with a median asking price of $61. Based on 9 priced salvage yard listings across the US, updated Sep 13, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $24–$138 | 6 | |
| Grade BStandard used | $50–$61 | 3 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $24–$138 overall range
Trim-specific context
This pricing covers the Temperature, ID 84221981 variant of the 2018 GMC Terrain transmission control module, based on 9 priced listings. Its $61 median is 14% below the 2018 GMC Terrain transmission control module overall median of $71.
There are 36 other transmission control module 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 9 priced salvage-yard listings, a used 2018 GMC Terrain transmission control module in the Temperature, ID 84221981 variant lists between $24 and $138, with a median asking price of $61.
The Temperature, ID 84221981 variant appears in model years 2018, 2019. Prices and availability may differ by year.