

🚛 Upgrade your brake control, upgrade your drive—don’t get left behind!
The 84108373 Trailer Brake Control Switch is a direct-fit replacement for 2014-2021 Chevy and GMC trucks and SUVs, offering plug-and-play installation with no programming required. Engineered with IP67-rated protection, it guarantees durable, consistent trailer braking performance. Backed by factory testing and professional tech support, this switch resolves malfunctioning brake issues quickly, making it the go-to fix for reliable towing control.





| ASIN | B0B6HY2S9C |
| Actuator Type | Push Button |
| Best Sellers Rank | #38,104 in Automotive ( See Top 100 in Automotive ) #24 in Trailer Brake Controls |
| Brand | CULMKARI |
| Brand Name | CULMKARI |
| Circuit Type | 1-way |
| Color | Black |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Plastic |
| Contact Type | Normally Open |
| Control Method | Touch |
| Customer Reviews | 4.6 out of 5 stars 313 Reviews |
| International Protection Rating | IP67 |
| Item Dimensions | 3.15 x 2.76 x 2.36 inches |
| Manufacturer | CULMKARI |
| Material Type | Plastic |
| Model | YW-295 |
| Mounting Type | Plug-In Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operation Mode | ON-OFF |
| Switch Type | Ignition Switch |
| Terminal | Blade |
| UPC | 768643645704 |
| Unit Count | 1.0 Count |
3**G
Very good price for and easy fix, of an annoying problem!
Switch worked really well, no issues with truck after swapping out. Change out was really easy, 20 minutes tops, done.
G**.
Plug & Play, Worked on 3 of my trucks 2015-2017
I have a 2015, 2016 & 2017 Chevy & GMC 2500, all 3 of my trucks the OEM one went out. Replaced with these & had no issues. Plug & Play no programming needed, but you may have to clear your trouble codes if your old one was setting "Service Trailer Brake System" message/code
Z**O
Good product
This was a very good product that worked on my truck My trailer brakes work awesome now needed the new part! Very affordable!
B**E
Easy to install. Just be patient, on removing plastic panels.
Just like factory. Fit well. Didn't fix my problem, but looks nice. Easy to install. Works better if you have the kit to remove the panels. Plastic pry tools etc.
V**4
Looks and feels like factory. Recommend
No more “SERVICE TRAILER SYSTEM” messages! So far so good. Works good feels good. Installed on my 2015 GMC SIERRA 1500.
F**S
Fixed the notification to Service Trailer Brake System
My wife's 2017 Yukon Denali decided it wanted to play a game called "Service Trailer Brake System Notification Roulette." Sometimes, the notification would pop up just to say hi, and other times, it would stick around like an unwelcome guest. We'd dismiss it, and it would either vanish or stay for the whole drive. We tried everything: checked the wiring, did the cleaning dance, and followed all the recommended steps. Before diving into expensive fixes, we decided to give this product a shot. Fast forward a few months, and that pesky notification hasn't shown its face again! Problem solved, and our wallet is still smiling. This solution was way cheaper than the other recommended fixes, and it saved us from the constant annoyance. Highly recommend giving it a try if your car also likes to play notification games!
G**T
quick service
good quality
N**O
Plug and play!
Plug and play worked like a charm! 2016 GMC 2500HD
Trustpilot
1 week ago
3 days ago