2021 GMC Sierra 1500 transmission control module — Door, (tailgate control) price snapshot
- Low
- $65
- Average
- $169
- High
- $271

Year & trim-specific price guide
A used 2021 GMC Sierra 1500 transmission control module (Door, (tailgate control)) costs $65 to $271, with a median asking price of $193. Based on 47 priced salvage yard listings across the US, updated Aug 24, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $65–$271 | 21 | |
| Grade BStandard used | $93–$271 | 25 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $80–$80 | 1 |
Median by grade
Median asking price by seller-reported condition grade · $65–$271 overall range
Trim-specific context
This pricing covers the Door, (tailgate control) variant of the 2021 GMC Sierra 1500 transmission control module, based on 47 priced listings. Its $193 median is 45% above the 2021 GMC Sierra 1500 transmission control module overall median of $133.
There are 32 other transmission control module variants available for the 2021 GMC Sierra 1500.
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 47 priced salvage-yard listings, a used 2021 GMC Sierra 1500 transmission control module in the Door, (tailgate control) variant lists between $65 and $271, with a median asking price of $193.
The Door, (tailgate control) variant appears in model years 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.