Used 2021 GMC Yukon transmission control module – Network Gateway, (LH firewall)

Year & trim-specific price guide

Used 2021 GMC Yukon Transmission Control Module — Network Gateway, (LH firewall) prices

Trim-specific pricing for the Network Gateway, (LH firewall) variant of the 2021 GMC Yukon transmission control module, built from 50 real salvage yard listings with condition grade detail.

2021 GMC Yukon · Network Gateway, (LH firewall)

$190

median asking price

50 priced listings · $75–$350

Price summary

A used 2021 GMC Yukon transmission control module (Network Gateway, (LH firewall)) costs $75 to $350, with a median asking price of $190. Based on 50 priced salvage yard listings across the US, updated Aug 28, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$190
Grade B (good)$177

2021 GMC Yukon transmission control module — Network Gateway, (LH firewall) price snapshot

USD
Low
$75
Average
$168
High
$350
50 priced listings used · last updated Aug 28, 2026· How we price·

Report incorrect price

Reporting price for 2021 GMC Yukon Transmission Control Module (Network Gateway, (LH firewall))

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$75–$35039 listings
Grade BStandard used$75–$23211 listings
Grade CVisible wearUpdating
Grade XUngradedUpdating

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $75–$350 overall range

Trim-specific context

How does the Network Gateway, (LH firewall) compare?

This pricing covers the Network Gateway, (LH firewall) variant of the 2021 GMC Yukon transmission control module, based on 50 priced listings. Its $190 median is 21% above the 2021 GMC Yukon transmission control module overall median of $157.

There are 22 other transmission control module variants available for the 2021 GMC Yukon.

Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.

Same trim, other years

Network Gateway, (LH firewall) in other model years

All years
202548 listings$99$60 – $239202444 listings$91$25 – $247202348 listings$162$35 – $265202234 listings$99$61 – $305

Same year, other trims

What other 2021 GMC Yukon transmission control module variants are available?

Driver Assist, park assist, (RH quarter panel)

50 listings$168$50 – $235

Body Control (BCM), (LH firewall)

50 listings$140$35 – $232

Suspension, suspension control, (rear center frame mounted)

50 listings$178$35 – $290

Theft-Locking, (theft deterrent, under floor console)

50 listings$145$35 – $210

Transmission, (on transmission)

50 listings$159$50 – $296

Air Bag, (below LH front seat)

49 listings$165$50 – $243

Door, hands free rear closer, (inside lifgate), ID 23414544

49 listings$146$25 – $280

Door, power liftgate, (inside LH quarter panel)

49 listings$156$35 – $264

Driver Assist, forward collision warning, (LH roof)

49 listings$190$86 – $275

Fuel Pump, (below LH pillar)

49 listings$195$51 – $232

Memory, (below driver seat), ID 13536041

48 listings$99$41 – $254

Towing Control, (RH rear frame)

48 listings$185$50 – $225

Differential Lock, (LH quarter panel)

47 listings$175$75 – $235

Communication, telematics (OnStar, opt UE1), ID 84946159

45 listings$125$75 – $405

Memory, (below driver seat), ID 13536040

44 listings$80$41 – $257

Communication, wireless charger, (under console)

43 listings$100$50 – $216

Communication, telematics (OnStar, opt UE1), ID 84946160

41 listings$193$60 – $395

Suspension, air suspension (opt F47), suspension control (LH quarter panel)

23 listings$145$75 – $251

Suspension, air suspension (opt F47), air suspension control (compressor mounted)

10 listings$216$81 – $286

Communication, telematics (OnStar, opt UE1), ID 84946162

2 listings$359$101 – $359

Communication, telematics (OnStar, opt UE1), ID 84946163

2 listings$190$100 – $190

Door, hands free rear closer, (inside lifgate), ID 86777551

2 listings$225$46 – $225

Back to full guide

2021 GMC Yukon transmission control module — all trims

View 2021 guide

Common questions

2021 GMC Yukon transmission control module (Network Gateway, (LH firewall)) FAQ

How much is a used 2021 GMC Yukon transmission control module (Network Gateway, (LH firewall))?

Based on 50 priced salvage-yard listings, a used 2021 GMC Yukon transmission control module in the Network Gateway, (LH firewall) variant lists between $75 and $350, with a median asking price of $190.

Which years use the Network Gateway, (LH firewall) transmission control module?

The Network Gateway, (LH firewall) variant appears in model years 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.