GMC Sierra 1500 transmission control module — Transmission, (firewall mounted) price snapshot
- Low
- $51
- Average
- $157
- High
- $331
Trim-specific price guide
GMC Sierra 1500 Transmission Control Module — Transmission, (firewall mounted) prices
Pricing for the Transmission, (firewall mounted) variant of the GMC Sierra 1500 transmission control module, aggregated from 92 salvage yard listings across 2 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 updatedSep 23, 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 GMC Sierra 1500 transmission control module (Transmission, (firewall mounted)) costs $51 to $331, with a median asking price of $227. Based on 92 priced salvage yard listings across the US, updated Sep 23, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$241
Grade B (good)$227
USD
Condition comparison
Price by part grade
Grade AClean / low wear$51–$33156 listings
Grade BStandard used$75–$32130 listings
Grade XUngraded$65–$1206 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $51–$331 | 56 | |
| Grade BStandard used | $75–$321 | 30 | |
| Grade XUngraded | $65–$120 | 6 |
Median by grade
Grade price comparison
Grade A$241
Grade B$227
Ungraded$99
Median asking price by seller-reported condition grade · $51–$331 overall range
Trim-specific context
How is the Transmission, (firewall mounted) priced differently?
This pricing covers the Transmission, (firewall mounted) variant of the GMC Sierra 1500 transmission control module, based on 92 priced listings across 2 model years (2017, 2018). Its $227 median is 82% above the GMC Sierra 1500 transmission control module overall median of $125.
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 Transmission, (firewall mounted) cost by year?
Other trims
Other GMC Sierra 1500 transmission control module variants
Air Bag, classic style (mirrors mount in window corner), (on transmission tunnel)
1 yr$51$40 – $192Air Bag, new style (mirrors mount on door skin), (RH rear floor)
1 yr$100$50 – $182Air Bag, (on transmission tunnel)
2 yrs$222$41 – $272Air Bag, (on transmission tunnel), ID 13507217
2 yrs$153$40 – $272Air Bag, (on transmission tunnel), ID 13507220
1 yr$120$41 – $346Air Bag, (on transmission tunnel), ID 13522335
1 yr$104$75 – $310Air Bag, (RH rear floor)
5 yrs$124$50 – $450Body Control (BCM), classic style (mirrors mount in window corner), (under steering column), ID 13508761
1 yr$171$45 – $176Body Control (BCM), classic style (mirrors mount in window corner), (under steering column), ID 13521450
1 yr$171$35 – $194Common questions
GMC Sierra 1500 transmission control module (Transmission, (firewall mounted)) FAQ
How much is a used GMC Sierra 1500 transmission control module (Transmission, (firewall mounted))?
Based on 92 priced salvage-yard listings across 2 model years, a used GMC Sierra 1500 transmission control module in the Transmission, (firewall mounted) variant lists between $51 and $331, with a median asking price of $227.
Which GMC Sierra 1500 years use the Transmission, (firewall mounted) transmission control module?
The Transmission, (firewall mounted) variant appears in model years 2017, 2018. Prices and availability differ by year.
Is there a price difference between Transmission, (firewall mounted) condition grades?
Yes. Grade A has a median of $241, Grade B has a median of $227. Grade A parts are in excellent condition, B is good, and C is fair.