NHTSA ID Number: 10070146
Manufacturer Communication Number: PI1105A
Summary
This Preliminary Information communication provides information to the technician about customer that want an aftermarket trailer brake controller or where the harness is located. To connect a trailer brake controller, a harness is needed that will plug into the X6 position of the Left Instrument Panel Junction Block (X61A), located under driver?s side dash near the parking brake pedal assembly.
6 Affected Products
Vehicles
CHEVROLET | SILVERADO 1500 | 2014 |
| CHEVROLET | SUBURBAN | 2015 |
| CHEVROLET | TAHOE | 2015 |
| GMC | SIERRA 1500 | 2014 |
| GMC | YUKON | 2015 |
| GMC | YUKON XL | 2015 |
Parts
| Trailer Brake Controller Harness | 1 | 23184088
Genuine GM Harness Part# - 23184088
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API |
SEOCONTENT-START
Bulletin No.: PI1105A
Date: March, 2014
Service Bulletin
PRELIMINARY INFORMATION
| Subject: | Trailer Brake Controller Harness for Adding an Aftermarket Trailer Brake Controller |
| Models: | 2014 Chevrolet Silverado 1500 |
| 2015 Chevrolet Suburban, Tahoe |
|
| 2014 GMC Sierra 1500 | |
| 2015 GMC Yukon, Yukon XL | |
| Equipped with RPO Z82 but without RPO JL1 |
The information in this PI replaces PIT5228 and PI1105. Please discard PIT5228 and PI1105.
Chevrolet and GMC models listed below equipped with trailering package RPO Z82 (but without RPO JL1) were shipped to dealers without an electric trailer brake controller harness used for the installation of an aftermarket trailer brake controller.
Vehicle Breakpoint Information
| Model Year | Model | Plant | Plant Code | Date |
| 2014 | Chevrolet Silverado 1500
GMC Sierra 1500 |
Fort Wayne | Z | Built Prior to October 10, 2013 |
| 2014 | Chevrolet Silverado 1500
GMC Sierra 1500 |
Silao | G | Built Prior to November 8, 2013 |
| 2015 | Chevrolet Suburban, Tahoe
GMC Yukon, Yukon XL |
Arlington | R | Built Prior to February 14, 2014 |
Availability of Trailer Brake Controller Harness
- Trailer Brake Controller harnesses are being shipped to dealers from the Warranty Parts Center (WPC) for vehicles in dealer inventory. This shipment began March 1, 2014 via UPS 3-Day Shipping. Please add this harness to the vehicle when parts are received. Additional information and a complete listing of affected VINs can be found in dealer message G_0000186218, dated March 7, 2014. Dealers in Canada should refer to message number G_0000186592.
- If a vehicle assigned to your dealership has been sold or dealer traded, please make arrangements to provide the customer or the selling dealer with the harness when received.
- For customers of previously purchased vehicles, GM will mail the harness directly to customers of record.
Information on Installation of an Aftermarket (Non-GM) Trailer Brake Controller
As stated above: the shipped harness is for use in connecting an aftermarket trailer brake controller. An instruction sheet for installation is included in the package with the harness. Additionally, a label is applied to the harness that calls out the wire colors and each wire’s function.
For reference the harness is to be connected from the MID-BEC to an aftermarket trailer brake controller. The MID-BEC is located under the I/P to the left of the steering column. The harness connection point (1) is illustrated above. Complete instructions for customer installation of the harness are included in the harness packaging.
This information does not apply to trucks equipped with an integrated trailer brake control module (JL1).
If the customer wishes to have an aftermarket brake controller installed in their vehicle, it would be considered as a Customer Pay option.
Parts Information
If additional or a replacement harness is needed please order:
| Description | Quantity | Part Number |
| Trailer Brake Controller Harness | 1 | 23184088
Genuine GM Harness Part# - 23184088
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API |
SEOCONTENT-END
Bulletin No.: PI1105A
Date: March, 2014
To View or Download this Document Click Here
Bulletin No.: PI1105
Date: November, 2013
To View or Download this Document Click Here
Bulletin No.: PI1105
Date: ,
To View or Download this Document Click Here
Bulletin No.: PIT5228
Date: Nov-2013
To View or Download this Document Click Here
Bulletin No.: PIT5228
Date: September, 2013
To View or Download this Document Click Here
- PORTABLE — The Echo wireless trailer brake controller has a non-invasive, zero-tool install and easily transfers from one vehicle to another. It plugs between compatible vehicle and trailer 7-way RV blade connectors and wirelessly links to your smartphone using Bluetooth.
- SMARTPHONE-READY — Echo wirelessly syncs with your Apple or Android phone through the OneControl app, turning it into a brake controller interface for setup, brake adjustment and profile storage. Pair through the app, not the phone’s Bluetooth menu. Avoid distracted driving and only make adjustments when stationary.
- ZERO-TOOL INSTALL — Installing this mobile trailer brake controller is as easy as plugging into a compatible active 7-way RV blade connector with +12V power and ground. A locking tab and included retention strap help keep it firmly connected; strap is stored inside the cap.
- HIGHLY RESPONSIVE — Echo uses a triple-axis accelerometer to provide smooth proportional trailer braking. It maintains responsive braking when your phone screen is locked, receives incoming calls or if the Bluetooth connection is lost after setup.
- VERSATILE — This wireless electric trailer brake controller transfers between compatible vehicles and trailers and works with most trailers with 1 to 2 axles / 2 to 4 brakes. Compatible with cruise control, anti-lock brakes and low-voltage systems; vehicle 7-way must be active for operation.
- 【Intelligent braking】Proportional controllers are the safest and most responsive braking system you can install.Proportional trailer brake controllers automatically sense when your tow vehicle slows down or stops. This type of brake controller will replicate your own braking intensity for your trailer's brakes, whether you slow to a gradual stop or have to slam on your brakes
- 【Easy to display】LED Digital display screens show the voltage delivery going from the brake controller to the trailer's brakes. Easy to read, easy to observe vehicle conditions in real time.In case of emergencies, make adjustments in time
- 【Safer and more stable】Fits 1 to 4 axle (2 to 8 brakes) trailers to deliver a signal from your vehicle's brakes to your trailer,both quantity of braking power (result) and rate of the program (sync) can be adjusted to fit your inclination, the street conditions, and kind of trailer,increase the safety of driving.Requires no leveling
- 【Quick installation and use】Wiring ports are available for vehicle-specific brake controller harnesses and provide a quick connection between the controller and the towing vehicle for quick and easy installation or removal
- 【4 Wiring & controls】BLACK-Vehicle Power, RED-Stop Light, WHITE-Vehicle Ground, BLUE-Trailer Brakes
- Fitment:The Brakeman IV digital brake controller is designed for broad compatibility with a wide range of vehicles and trailers,including Ford
,GM,Chevy,Dodge,RAM,Toyota,Jeep,as well as trucks,RVs,tour buses,and other vehicles equipped with 1 to 4 axles (supporting 2-,4-,6-,and 8-brake systems). - Time-Delayed Brake Activation: The controller allows for precise control of braking over a set time delay, ensuring smoother braking transitions and reducing jerky or abrupt stops when towing a trailer.improving overall towing safety.
- LED Display for Clear Status Indication: Equipped with an LED display that clearly shows the current braking force, allowing users to monitor and adjust the settings for optimal performance.Adjustable brake force and consistent braking performance.
- Easy Installation: Compact and durable Design for simple installation,ensuring long-lasting performance. This controller can be quickly mounted in most vehicles with minimal effort, saving time and installation costs.
- Package Include: 1 x Brake Controller, 1 x mounting bracket, 6 x mounting screws, 1x instruction.
- Proportional Mode Brake for Everyday Towing: The Tow-Pro Liberty delivers Proportional Mode braking for smooth on-road control. Easy to install and use, the system reduces push and pull for ultimate towing confidence on roads and highways
- Universal Brake Controller for SUVs & Trucks: Pair with the universal pig tail wiring harness (TPH-025) or one of our vehicle specific brake controller wiring harnesses and switch inserts for factory-style integration (each sold separately)
- What’s Included: Tow-Pro Liberty Electric Brake Controller, Remote Head Assembly, Remote Head Nut, Remote Head Knob, Remote Head Bezel, Remote Head Cable 3’3” (1 m). Supports 1–2 axles. Fits most common trailer braking applications
- No Knee-Knocking and Sway Control: Compact dash dial blends seamlessly into your vehicle while Active Calibration and sway control deliver smooth braking, with or without a trailer to stay steady on roads
- Confidence for The Long Haul: Designed and torture-tested in the Australian Outback, it's engineered for the toughest towing conditions. Trusted for 45+ years, REDARC offers a 2 year limited warranty on this trailer brake controller
- PROFESSIONAL TRAILER BRAKE CONTROLLER: Ensure safe towing with the Briidea professional trailer brake controller. Designed for reliability, it gives you peace of mind by ensuring smooth braking, significantly reducing the risk of accidents and vehicle damage
- TIME-DELAY TRAILER BRAKE CONTROLLER: The time delay brake controller can activate the trailer brake by applying varying power within a set period of time. Once engaged, the LED display conveniently shows the gain setting, ensuring your safety while driving
- SAFETY PROTECTION: Our trailer brake controllers has advanced overcurrent protection, short circuit protection and fault detection for your road safety. With LED display, real-time display of your current Settings, output voltage and fault diagnosis, so that you can solve problems in a timely manner
- EASY TO INSTALL: Includes a versatile mounting bracket and accessories for installation in any position or angle. For optimal placement, we recommend mounting it under the dashboard to ensure it doesn't obstruct your view while driving. This allows you to conveniently operate and monitor trailer brake activity from the cab
- COMPATIBILITY: The trailer brake controller kit is compatible with any vehicle now your driving, designed to operate 1 to 4 braked axles (2- 8 brakes), ideal for light duty towing and Occasional towing, etc
Last update on 2026-06-14 / Affiliate links / Images from Amazon Product Advertising API
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