GMC Sierra 1500 transmission control module — Towing Control, (behind LH bumper), trailer lamp control price snapshot
- Low
- $50
- Average
- $142
- High
- $348

Trim-specific price guide
A used GMC Sierra 1500 transmission control module (Towing Control, (behind LH bumper), trailer lamp control) costs $50 to $348, with a median asking price of $155. Based on 194 priced salvage yard listings across the US, updated Sep 10, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$348 | 87 | |
| Grade BStandard used | $50–$340 | 100 | |
| Grade CVisible wear | $90–$90 | 2 | |
| Grade XUngraded | $67–$150 | 5 |
Median by grade
Median asking price by seller-reported condition grade · $50–$348 overall range
Trim-specific context
This pricing covers the Towing Control, (behind LH bumper), trailer lamp control variant of the GMC Sierra 1500 transmission control module, based on 194 priced listings across 5 model years (2021, 2022, 2023, 2024, 2025). Its $155 median is 11% above the GMC Sierra 1500 transmission control module overall median of $140.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Price by model year
Other trims
Common questions
Based on 194 priced salvage-yard listings across 5 model years, a used GMC Sierra 1500 transmission control module in the Towing Control, (behind LH bumper), trailer lamp control variant lists between $50 and $348, with a median asking price of $155.
The Towing Control, (behind LH bumper), trailer lamp control variant appears in model years 2021, 2022, 2023, 2024, 2025. Prices and availability differ by year.
Yes. Grade A has a median of $171, Grade B has a median of $139, Grade C has a median of $90. Grade A parts are in excellent condition, B is good, and C is fair.