Crux CS-GM43 Wiring Interface

Features

Vehicle Compatibility: The Crux CS-GM43 radio replacement interface module is specifically designed for select 2019-up GM vehicles that feature non-amplified factory audio systems or that will have their factory amps bypassed.

Notes:

• The CS-GM43 is compatible with following factory radios - IOR, IOS, IOT, and IOU. The radio code can be found in the vehicle's glove box. Newer model GM vehicles are now using a QR code label. If the Service Parts Identification Label is not located in the glove box, reference the Vehicle Certification Label on the driver's door jam opening for the QR Code.
• 2 harnesses are included, but only one will be used based on your vehicle's radio code. The SWCGM-IOS-IOT-IO harness (CS-GM43S) will be used in vehicles with an IOS, IOT, or IOU factory radio installed. The SWCGM-IOR harness (CS-GM43R) will be used in vehicles with an IOR factory installed radio.
• In some of GM vehicles with a factory radio code of IOR, IOU or IOS; the radio control module is located at the front passenger side (by the door hinge). In these cases, a Crux GM49R-EXT or GM49S-EXT 5' extension harnesses is required and sold separately.

Retained Factory Features: The Crux CS-GM43 facilitates the replacement of the factory radio in a compatible 2019-up GM vehicle with an aftermarket head unit, while retaining important factory installed features - such as steering wheel controls, backup camera, RAP (Retained Accessory Power), and warning chimes.

• Steering Wheel Controls: The Crux CS-GM43 lets you retain your vehicle's factory steering wheel controls. There are two steering wheel control harnesses; you will only use one based on the brand of your aftermarket stereo. Both feature a 4-pin connector which plugs into the interface module. One of the SWC harnesses is equipped with a 3.5mm connector and one blue/yellow wire (for Alpine/Clarion/JVC/Kenwood/Jensen/Dual/Boss), while the other is only equipped with a 3.5mm connector (for Pioneer/Sony). There are three dip-switches on the interface module that allow you to program the CS-GM43 to work with your aftermarket stereo (see Installation Instructions for DIP Switch Settings.
• Backup Camera: The CS-GM43 allows you to retain your GM vehicle's backup camera through the interface harness's male composite video connector. Your aftermarket in-dash stereo must have a composite video camera input and a built-in video monitor. Backup camera retention is only possible in GM vehicles with an IRO factory radio installed (excluding the 2019-up Chevy Camaro).
• RAP (Retained Accessory Power): The ignition power source of most GM vehicles keeps the radio on until one of the doors is opened; this feature is lost when replacing the factory radio with an aftermarket head unit without the proper installation accessories. The CS-GM43 is designed to retain the RAP feature and keep the radio powered after the key is off, until the driver door is opened or the OEM timer ends; whichever happens first.
• Warning & Safety Chimes: The Crux CS-GM43 retains factory warning & safety chimes through the use of an on-board speaker. The volume of the chime speaker is adjustable through a potentiometer on the interface module.

Notes:

• Does not retain the factory Bose amplifier.
• Does not retain factory OnStar.

Outputs: The Crux CS-GM43 radio replacement interface module provides a +12V Accessory, Illumination, and Reverse output - simplifying your installation.