2021 GMC Sierra 1500 transmission control module — Network Gateway, (LH rear engine compartment) price snapshot
- Low
- $40
- Average
- $133
- High
- $241
Year & trim-specific price guide
Used 2021 GMC Sierra 1500 Transmission Control Module — Network Gateway, (LH rear engine compartment) prices
Trim-specific pricing for the Network Gateway, (LH rear engine compartment) variant of the 2021 GMC Sierra 1500 transmission control module, built from 50 real salvage yard listings with condition grade detail.
Price summary
A used 2021 GMC Sierra 1500 transmission control module (Network Gateway, (LH rear engine compartment)) costs $40 to $241, with a median asking price of $99. Based on 50 priced salvage yard listings across the US, updated Aug 24, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$99
Grade B (good)$99
USD
Condition comparison
Price by part grade
Grade AClean / low wear$50–$24118 listings
Grade BStandard used$40–$24129 listings
Grade CVisible wearUpdating
Grade XUngraded$40–$553 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$241 | 18 | |
| Grade BStandard used | $40–$241 | 29 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $40–$55 | 3 |
Median by grade
Grade price comparison
Grade A$99
Grade B$99
Ungraded$50
Median asking price by seller-reported condition grade · $40–$241 overall range
Trim-specific context
How does the Network Gateway, (LH rear engine compartment) compare?
This pricing covers the Network Gateway, (LH rear engine compartment) variant of the 2021 GMC Sierra 1500 transmission control module, based on 50 priced listings. Its $99 median is 26% below the 2021 GMC Sierra 1500 transmission control module overall median of $133.
There are 32 other transmission control module variants available for the 2021 GMC Sierra 1500.
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 rear engine compartment) in other model years
Same year, other trims
What other 2021 GMC Sierra 1500 transmission control module variants are available?
Memory, (under driver seat)
50 listings$95$50 – $241Fuel Pump, (RH rear frame rail)
50 listings$162$45 – $271Driver Assist, camera, (RH cab back panel), opt UVS (360 view, digital camera)
50 listings$365$250 – $435Theft-Locking, keyless entry (LH under dash)
50 listings$123$40 – $312Temperature, (RH under dash), ID 84579087
50 listings$162$66 – $205Air Bag, (RH rear floor)
49 listings$99$51 – $450Body Control (BCM), (under steering wheel mounted)
49 listings$159$50 – $272Driver Assist, park assist, (RH cab back panel)
49 listings$143$41 – $271Transfer Case, (LH inner fender)
48 listings$143$45 – $222Transmission Control, (LH core support)
48 listings$179$50 – $410Theft-Locking, door lock control (back glass LH frame)
48 listings$153$30 – $271Towing Control, (behind LH bumper), trailer lamp control
48 listings$155$50 – $340Driver Assist, camera, (RH cab back panel), opt UVN (bed view camera)
47 listings$149$65 – $297Door, (tailgate control)
47 listings$193$65 – $271Power Supply, (behind rear seat)
47 listings$99$45 – $271Communication, (telematics, OnStar, LH dash), ID 84833055
46 listings$99$56 – $271Communication, (telematics, OnStar, LH dash), ID 84967568
46 listings$99$56 – $271Communication, (telematics, OnStar, LH dash), ID 85129541
46 listings$99$56 – $271Communication, (telematics, OnStar, LH dash), ID 85527366
46 listings$99$56 – $271Communication, (telematics, OnStar, LH dash), ID 85543261
46 listings$99$56 – $271Communication, (telematics, OnStar, LH dash), ID 86815701
46 listings$99$56 – $271Driver Assist, TPMS (mounted behind rear bumper)
46 listings$168$71 – $415Theft-Locking, theft deterrent, w/o remote start; (at top of steering column)
46 listings$65$35 – $335Steering, (steering mounted), ID 13524104
45 listings$153$35 – $271Steering, (steering mounted), ID 13535112
45 listings$153$35 – $271Steering, (steering mounted), ID 84836986
45 listings$175$51 – $228Towing Control, (behind LH bumper), tow package
44 listings$149$40 – $271Temperature, (RH under dash), ID 84579089
44 listings$179$59 – $271Theft-Locking, theft deterrent, remote start (opt AVJ), (under floor console)
44 listings$110$35 – $271Suspension, (rear frame)
41 listings$111$60 – $271Communication, (telematics, OnStar, LH dash), ID 85124234
36 listings$91$60 – $260Communication, (telematics, OnStar, LH dash), ID 84960632
15 listings$76$60 – $260Back to full guide
2021 GMC Sierra 1500 transmission control module — all trims
Common questions
2021 GMC Sierra 1500 transmission control module (Network Gateway, (LH rear engine compartment)) FAQ
How much is a used 2021 GMC Sierra 1500 transmission control module (Network Gateway, (LH rear engine compartment))?
Based on 50 priced salvage-yard listings, a used 2021 GMC Sierra 1500 transmission control module in the Network Gateway, (LH rear engine compartment) variant lists between $40 and $241, with a median asking price of $99.
Which years use the Network Gateway, (LH rear engine compartment) transmission control module?
The Network Gateway, (LH rear engine compartment) variant appears in model years 2020, 2021, 2022, 2023, 2024, 2025. Prices and availability may differ by year.