2021 Cadillac XT4 transmission control module — Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) price snapshot
- Low
- $35
- Average
- $189
- High
- $232
Year & trim-specific price guide
Used 2021 Cadillac XT4 Transmission Control Module — Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) prices
Trim-specific pricing for the Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) variant of the 2021 Cadillac XT4 transmission control module, built from 50 real salvage yard listings with condition grade detail.
SKWritten bySaurabh Kumar · Co-Founder & CTO
SK
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.
ASReviewed byAmbika Sharma · Co-Founder & COO
Last updatedOct 10, 2026AS
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.
Price summary
A used 2021 Cadillac XT4 transmission control module (Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7)) costs $35 to $232, with a median asking price of $195. Based on 50 priced salvage yard listings across the US, updated Oct 10, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$195
Grade B (good)$190
USD
Condition comparison
Price by part grade
Grade AClean / low wear$50–$23231 listings
Grade BStandard used$139–$23218 listings
Grade XUngraded$35–$351 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$232 | 31 | |
| Grade BStandard used | $139–$232 | 18 | |
| Grade XUngraded | $35–$35 | 1 |
Median by grade
Grade price comparison
Grade A$195
Grade B$190
Ungraded$35
Median asking price by seller-reported condition grade · $35–$232 overall range
Trim-specific context
How does the Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) compare?
This pricing covers the Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) variant of the 2021 Cadillac XT4 transmission control module, based on 50 priced listings. Its $195 median is 30% above the 2021 Cadillac XT4 transmission control module overall median of $150.
There are 23 other transmission control module variants available for the 2021 Cadillac XT4.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) in other model years
Same year, other trims
What other 2021 Cadillac XT4 transmission control module variants are available?
Communication, telematics (OnStar opt UE1), ID 84721683
50 listings$177$50 – $232Communication, wireless charger, (center console)
50 listings$183$56 – $232Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; front and rear park assist (opt UD5)
50 listings$190$132 – $274Temperature, (center of heater box)
50 listings$101$40 – $270Theft-Locking, lock, (rear view mirror), ID 13523281
50 listings$195$46 – $195Communication, telematics (OnStar opt UE1), ID 84613034
49 listings$195$45 – $226Communication, telematics (OnStar opt UE1), ID 84676081
49 listings$195$45 – $226fuel pump, (RH inner quarter panel)
49 listings$195$41 – $232Memory, (seat, mounted under seat), LH
49 listings$190$41 – $232Theft-Locking, keyless entry, (RH dash), ID 13518841
49 listings$80$35 – $195Air Bag, (below center console), pre-crash system (opt UGN)
48 listings$151$51 – $232Body Control (BCM), (LH kick panel)
48 listings$51$51 – $51Differential Lock, (rear differential)
48 listings$188$40 – $207Memory, (seat, mounted under seat), RH
48 listings$99$40 – $218Transmission, (on transmission)
48 listings$125$46 – $232Air Bag, (below center console), w/o pre-crash system
47 listings$46$41 – $243Information-GPS-TV, (LH quarter panel)
47 listings$172$81 – $405Steering, (steering column)
47 listings$111$50 – $270Theft-Locking, keyless entry, (RH dash), ID 13518843
46 listings$190$66 – $232Driver Assist, park assist, (RH inner quarter panel), automatic park control (opt UKG)
45 listings$110$40 – $270Theft-Locking, keyless entry, (RH dash), ID 13529583
42 listings$130$40 – $270Theft-Locking, lock, (rear view mirror), ID 13595510
34 listings$101$30 – $270Suspension, (LH inner quarter panel), (damping, opt F45)
15 listings$121$101 – $125Back to full guide
2021 Cadillac XT4 transmission control module — all trims
Common questions
2021 Cadillac XT4 transmission control module (Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7)) FAQ
How much is a used 2021 Cadillac XT4 transmission control module (Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7))?
Based on 50 priced salvage-yard listings, a used 2021 Cadillac XT4 transmission control module in the Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) variant lists between $35 and $232, with a median asking price of $195.
Which years use the Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) transmission control module?
The Driver Assist, park assist, (RH inner quarter panel), w/o automatic park control; rear park assist (opt UD7) variant appears in model years 2019, 2020, 2021, 2022, 2023. Prices and availability may differ by year.