2018 GMC Sierra 1500 transmission control module — Driver Assist, (park assist), (RH cab back panel), opt UD7 price snapshot
- Low
- $50
- Average
- $131
- High
- $282

Year & trim-specific price guide
A used 2018 GMC Sierra 1500 transmission control module (Driver Assist, (park assist), (RH cab back panel), opt UD7) costs $50 to $282, with a median asking price of $110. Based on 45 priced salvage yard listings across the US, updated Aug 25, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$282 | 27 | |
| Grade BStandard used | $50–$282 | 17 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $50–$50 | 1 |
Median by grade
Median asking price by seller-reported condition grade · $50–$282 overall range
Trim-specific context
This pricing covers the Driver Assist, (park assist), (RH cab back panel), opt UD7 variant of the 2018 GMC Sierra 1500 transmission control module, based on 45 priced listings. Its $110 median is 12% below the 2018 GMC Sierra 1500 transmission control module overall median of $125.
There are 25 other transmission control module variants available for the 2018 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
Back to full guide
Common questions
Based on 45 priced salvage-yard listings, a used 2018 GMC Sierra 1500 transmission control module in the Driver Assist, (park assist), (RH cab back panel), opt UD7 variant lists between $50 and $282, with a median asking price of $110.
The Driver Assist, (park assist), (RH cab back panel), opt UD7 variant appears in model years 2018, 2020. Prices and availability may differ by year.