2021 GMC Terrain transmission control module — Theft-Locking, theft deterrent, (in console) price snapshot
- Low
- $30
- Average
- $146
- High
- $310

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 2021 GMC Terrain transmission control module (Theft-Locking, theft deterrent, (in console)) costs $30 to $310, with a median asking price of $46. Based on 48 priced salvage yard listings across the US, updated Sep 21, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$310 | 22 | |
| Grade BStandard used | $41–$295 | 26 |
Median by grade
Median asking price by seller-reported condition grade · $30–$310 overall range
Trim-specific context
This pricing covers the Theft-Locking, theft deterrent, (in console) variant of the 2021 GMC Terrain transmission control module, based on 48 priced listings. Its $46 median is 56% below the 2021 GMC Terrain transmission control module overall median of $105.
There are 29 other transmission control module variants available for the 2021 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 2021 GMC Terrain transmission control module in the Theft-Locking, theft deterrent, (in console) variant lists between $30 and $310, with a median asking price of $46.
The Theft-Locking, theft deterrent, (in console) variant appears in model years 2018, 2019, 2020, 2021, 2022, 2023, 2024. Prices and availability may differ by year.