2020 GMC Sierra 1500 transmission control module — Power Supply, (behind rear seat), 100 volt (opt KI4) price snapshot
- Low
- $50
- Average
- $149
- High
- $232
Year & trim-specific price guide
Used 2020 GMC Sierra 1500 Transmission Control Module — Power Supply, (behind rear seat), 100 volt (opt KI4) prices
Trim-specific pricing for the Power Supply, (behind rear seat), 100 volt (opt KI4) variant of the 2020 GMC Sierra 1500 transmission control module, built from 50 real salvage yard listings with condition grade detail.
Price summary
A used 2020 GMC Sierra 1500 transmission control module (Power Supply, (behind rear seat), 100 volt (opt KI4)) costs $50 to $232, with a median asking price of $177. Based on 50 priced salvage yard listings across the US, updated Sep 3, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$99
Grade B (good)$177
USD
Condition comparison
Price by part grade
Grade AClean / low wear$50–$23226 listings
Grade BStandard used$50–$23224 listings
Grade CVisible wearUpdating
Grade XUngradedUpdating
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$232 | 26 | |
| Grade BStandard used | $50–$232 | 24 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Grade price comparison
Grade A$99
Grade B$177
Median asking price by seller-reported condition grade · $50–$232 overall range
Trim-specific context
How does the Power Supply, (behind rear seat), 100 volt (opt KI4) compare?
This pricing covers the Power Supply, (behind rear seat), 100 volt (opt KI4) variant of the 2020 GMC Sierra 1500 transmission control module, based on 50 priced listings. Its $177 median is 4% below the 2020 GMC Sierra 1500 transmission control module overall median of $185.
There are 37 other transmission control module variants available for the 2020 GMC Sierra 1500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
What other 2020 GMC Sierra 1500 transmission control module variants are available?
Body Control (BCM), (under steering column), ID 13508761
50 listings$190$56 – $232Body Control (BCM), (under steering column), ID 13536089
50 listings$159$40 – $243Driver Assist, park assist, (RH cab back panel), opt UD5
50 listings$190$99 – $274Driver Assist, park assist, (RH cab back panel), opt UD7
50 listings$195$35 – $232Temperature, (RH under dash), ID 13507671
50 listings$100$37 – $220Fuel Pump, (RH rear frame rail)
50 listings$232$50 – $232Transfer Case, (LH inner fender)
50 listings$190$51 – $255Multifunction, (roof mounted)
49 listings$232$41 – $232Memory, (under driver seat)
49 listings$51$41 – $232Driver Assist, surround view, (RH cab back panel), ID 84689107
49 listings$195$50 – $410Driver Assist, surround view, (RH cab back panel), ID 84714771
49 listings$195$50 – $410Driver Assist, surround view, (RH cab back panel), ID 84714844
49 listings$195$50 – $410Driver Assist, surround view, (RH cab back panel), ID 84743036
49 listings$195$50 – $410Driver Assist, surround view, (RH cab back panel), ID 84757718
49 listings$195$50 – $410Driver Assist, surround view, (RH cab back panel), ID 84833405
49 listings$195$50 – $410Towing Control, (behind LH bumper), trailer lamp control, ID 13535101
49 listings$190$65 – $254Air Bag, (RH rear floor)
49 listings$192$61 – $233Towing Control, (behind LH bumper), tow package
49 listings$190$50 – $226Communication, (telematics), (LH dash), ID 84644344
48 listings$232$46 – $232Suspension, (rear frame), ID 84447009
48 listings$159$45 – $380Suspension, (rear frame), ID 84591777
48 listings$111$40 – $300Towing Control, (behind LH bumper), trailer lamp control, ID 13524896
48 listings$153$27 – $282Steering, (steering mounted), ID 13524104
48 listings$166$50 – $254Steering, (steering mounted), ID 13535112
48 listings$166$50 – $254Temperature, (RH under dash), ID 13507672
47 listings$147$45 – $340Transmission Control, (LH core support)
47 listings$190$51 – $254Network Gateway, (LH rear engine compartment)
47 listings$232$46 – $232Theft-Locking, (keyless entry, LH under dash)
46 listings$190$66 – $232Steering, (steering mounted), ID 84836986
44 listings$149$45 – $235Temperature, (RH under dash), ID 84569255
42 listings$109$30 – $192Communication, (telematics), (LH dash), ID 84720629
41 listings$115$35 – $200Temperature, (RH under dash), ID 13507673
41 listings$110$45 – $405Temperature, (RH under dash), ID 84569254
39 listings$115$44 – $300Temperature, (RH under dash), ID 84569253
36 listings$99$40 – $218Driver Assist, surround view, (RH cab back panel), ID 84680218
25 listings$150$75 – $305Power Supply, (behind rear seat), 230 volt (opt KI5)
9 listings$100$78 – $210Driver Assist, surround view, (RH cab back panel), ID 84691754
2 listings$99$75 – $99Back to full guide
2020 GMC Sierra 1500 transmission control module — all trims
Common questions
2020 GMC Sierra 1500 transmission control module (Power Supply, (behind rear seat), 100 volt (opt KI4)) FAQ
How much is a used 2020 GMC Sierra 1500 transmission control module (Power Supply, (behind rear seat), 100 volt (opt KI4))?
Based on 50 priced salvage-yard listings, a used 2020 GMC Sierra 1500 transmission control module in the Power Supply, (behind rear seat), 100 volt (opt KI4) variant lists between $50 and $232, with a median asking price of $177.
Which years use the Power Supply, (behind rear seat), 100 volt (opt KI4) transmission control module?
In our current dataset, the Power Supply, (behind rear seat), 100 volt (opt KI4) variant appears only for the 2020 model year.