GMC Terrain transmission control module — Theft-Locking, lock, (rear view mirror) price snapshot
- Low
- $41
- Average
- $47
- High
- $162

Trim-specific price guide
A used GMC Terrain transmission control module (Theft-Locking, lock, (rear view mirror)) costs $41 to $162, with a median asking price of $41. Based on 94 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 | $41–$100 | 66 | |
| Grade BStandard used | $41–$162 | 28 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Median asking price by seller-reported condition grade · $41–$162 overall range
Trim-specific context
This pricing covers the Theft-Locking, lock, (rear view mirror) variant of the GMC Terrain transmission control module, based on 94 priced listings across 2 model years (2018, 2019). Its $41 median is 45% below the GMC Terrain transmission control module overall median of $75.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
Other trims
Common questions
Based on 94 priced salvage-yard listings across 2 model years, a used GMC Terrain transmission control module in the Theft-Locking, lock, (rear view mirror) variant lists between $41 and $162, with a median asking price of $41.
The Theft-Locking, lock, (rear view mirror) variant appears in model years 2018, 2019. Prices and availability differ by year.
Yes. Grade A has a median of $41, Grade B has a median of $41. Grade A parts are in excellent condition, B is good, and C is fair.