2018 GMC Terrain transmission control module — Communication, telematics (opt UE1), (center dash), ID 84128418 price snapshot
- Low
- $46
- Average
- $91
- High
- $249

Year & trim-specific price guide
A used 2018 GMC Terrain transmission control module (Communication, telematics (opt UE1), (center dash), ID 84128418) costs $46 to $249, with a median asking price of $75. Based on 46 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 | $46–$249 | 36 | |
| Grade BStandard used | $46–$138 | 8 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $50–$71 | 2 |
Median by grade
Median asking price by seller-reported condition grade · $46–$249 overall range
Trim-specific context
This pricing covers the Communication, telematics (opt UE1), (center dash), ID 84128418 variant of the 2018 GMC Terrain transmission control module, based on 46 priced listings. Its $75 median is 6% above 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 46 priced salvage-yard listings, a used 2018 GMC Terrain transmission control module in the Communication, telematics (opt UE1), (center dash), ID 84128418 variant lists between $46 and $249, with a median asking price of $75.
The Communication, telematics (opt UE1), (center dash), ID 84128418 variant appears in model years 2018, 2019. Prices and availability may differ by year.