Cadillac XT4 transmission control module — Differential Lock, (rear differential) price snapshot
- Low
- $35
- Average
- $105
- High
- $321
Trim-specific price guide
Cadillac XT4 Transmission Control Module — Differential Lock, (rear differential) prices
Pricing for the Differential Lock, (rear differential) variant of the Cadillac XT4 transmission control module, aggregated from 288 salvage yard listings across 7 model years.
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 16, 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 Cadillac XT4 transmission control module (Differential Lock, (rear differential)) costs $35 to $321, with a median asking price of $76. Based on 288 priced salvage yard listings across the US, updated Oct 16, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$75
Grade B (good)$61
Grade C (fair)$65
USD
Condition comparison
Price by part grade
Grade AClean / low wear$40–$321184 listings
Grade BStandard used$41–$30587 listings
Grade CVisible wear$50–$653 listings
Grade XUngraded$35–$10014 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $40–$321 | 184 | |
| Grade BStandard used | $41–$305 | 87 | |
| Grade CVisible wear | $50–$65 | 3 | |
| Grade XUngraded | $35–$100 | 14 |
Median by grade
Grade price comparison
Grade A$75
Grade B$61
Grade C$65
Ungraded$85
Median asking price by seller-reported condition grade · $35–$321 overall range
Trim-specific context
How is the Differential Lock, (rear differential) priced differently?
This pricing covers the Differential Lock, (rear differential) variant of the Cadillac XT4 transmission control module, based on 288 priced listings across 7 model years (2019, 2020, 2021, 2022, 2023, 2024, 2025). Its $76 median is 11% below the Cadillac XT4 transmission control module overall median of $85.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
What does a Differential Lock, (rear differential) cost by year?
Other trims
Other Cadillac XT4 transmission control module variants
Air Bag, (below center console)
1 yr$156$40 – $350Air Bag, (below center console), pre-crash system (opt UGN)
6 yrs$51$40 – $299Air Bag, (below center console), w/o pre-crash system
6 yrs$100$41 – $335Body Control (BCM), (LH kick panel)
6 yrs$75$45 – $343Communication, telematics (OnStar opt UE1)
1 yr$100$70 – $295Communication, telematics (OnStar opt UE1), ID 84596569
1 yr$91$40 – $271Communication, telematics (OnStar opt UE1), ID 84613034
5 yrs$146$40 – $232Communication, telematics (OnStar opt UE1), ID 84644343
1 yr$172$90 – $260Communication, telematics (OnStar opt UE1), ID 84653367
1 yr$81$61 – $232Common questions
Cadillac XT4 transmission control module (Differential Lock, (rear differential)) FAQ
How much is a used Cadillac XT4 transmission control module (Differential Lock, (rear differential))?
Based on 288 priced salvage-yard listings across 7 model years, a used Cadillac XT4 transmission control module in the Differential Lock, (rear differential) variant lists between $35 and $321, with a median asking price of $76.
Which Cadillac XT4 years use the Differential Lock, (rear differential) transmission control module?
The Differential Lock, (rear differential) variant appears in model years 2019, 2020, 2021, 2022, 2023, 2024, 2025. Prices and availability differ by year.
Is there a price difference between Differential Lock, (rear differential) condition grades?
Yes. Grade A has a median of $75, Grade B has a median of $61, Grade C has a median of $65. Grade A parts are in excellent condition, B is good, and C is fair.