2018 Buick Regal transmission control module — Driver Assist, park assist, (LH rear body panel), opt UD5, ID 84078177 price snapshot
- Low
- $26
- Average
- $87
- High
- $316

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 2018 Buick Regal transmission control module (Driver Assist, park assist, (LH rear body panel), opt UD5, ID 84078177) costs $26 to $316, with a median asking price of $76. Based on 44 priced salvage yard listings across the US, updated Oct 3, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $30–$316 | 28 | |
| Grade BStandard used | $50–$176 | 14 | |
| Grade XUngraded | $26–$40 | 2 |
Median by grade
Median asking price by seller-reported condition grade · $26–$316 overall range
Trim-specific context
This pricing covers the Driver Assist, park assist, (LH rear body panel), opt UD5, ID 84078177 variant of the 2018 Buick Regal transmission control module, based on 44 priced listings. Its $76 median is 12% below the 2018 Buick Regal transmission control module overall median of $86.
There are 27 other transmission control module variants available for the 2018 Buick Regal.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
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Common questions
Based on 44 priced salvage-yard listings, a used 2018 Buick Regal transmission control module in the Driver Assist, park assist, (LH rear body panel), opt UD5, ID 84078177 variant lists between $26 and $316, with a median asking price of $76.
In our current dataset, the Driver Assist, park assist, (LH rear body panel), opt UD5, ID 84078177 variant appears only for the 2018 model year.