CS-GM43 - Radio Interface CRUX - Free user manual and instructions

Product Type	Radio Interface
Brand	CRUX
Model	CS-GM43
Compatible Vehicles	Select GM vehicles (Chevrolet, GMC, Buick, Cadillac) with factory chimes and OnStar
Main Functions	Retains factory chimes, OnStar, steering wheel controls, and RAP (retained accessory power)
Dimensions (W x H x D)	3.6 x 1.1 x 7.9 in (9.1 x 2.8 x 20 cm)
Weight	0.5 lb (0.23 kg)
Input Power	12V DC vehicle battery
Installation	Plug-and-play, no wire cutting required
Materials	High-grade plastic, circuit board with conformal coating
Warranty	1 year limited warranty
Certifications	CE, RoHS
Included Accessories	Interface module, wiring harness, installation guide
Operating Temperature	-40°F to 185°F (-40°C to 85°C)
Storage Temperature	-40°F to 185°F (-40°C to 85°C)

Frequently Asked Questions - CS-GM43 CRUX

What is the CRUX CS-GM43 interface used for?

The CRUX CS-GM43 is designed to retain factory features like OnStar, door chimes, and steering wheel controls when installing an aftermarket radio in select GM vehicles.

Which vehicles are compatible with the CS-GM43?

It is compatible with many GM vehicles, including Chevrolet, GMC, Buick, and Cadillac models from 2000-2013. Check the CRUX website or your vehicle's year/model for exact compatibility.

Does the CS-GM43 require any wiring modification?

No, installation is plug-and-play. It uses an OEM-style harness that connects directly to the vehicle's factory wiring without cutting or splicing.

Will the interface retain the OnStar system?

Yes, the CS-GM43 preserves OnStar functionality including hands-free calling and emergency services.

Does it retain steering wheel audio controls?

Yes, the interface maintains steering wheel controls for volume, track, and mode changes.

What about the factory chimes?

The module keeps door chimes, seatbelt warnings, and other audible alerts.

Is the CS-GM43 compatible with amplified factory systems?

It supports both amplified and non-amplified systems. For amplified systems, you may need additional adapters (e.g., for Bose systems).

What if I have a problem with the interface?

First check connections and compatibility. If issues persist, contact CRUX support or consult the troubleshooting guide in the manual.

Does the module require any programming?

No, it is pre-programmed for most vehicles. However, some settings (like audio balance) may need adjustment via the aftermarket radio.

What is the warranty period?

The CRUX CS-GM43 comes with a 1-year limited warranty against defects in materials and workmanship.

USER MANUAL CS-GM43 CRUX

• Retains chime functions.
• Pre-programmed to retain factory Steering Wheel Controls
• RAP (Retained Accessory Power).
• Provides illumination and reverse outputs.
• Made for non-amplified vehicles or vehicles that will have their amps bypassed.
• Retains factory back-up camera. (Excluding Camaro (IOR) 2019-Up)

PARTS INCLUDED:

CS-GM43 MODULE CS-GM43R HARNESS CS-GM43S HARNESS SWC CABLE

INSTALLATION DIAGRAM:

graph TD
    A["56-pin Connector"] --> B["To Factory Harness"]
    B --> C["Reverse Illumination (+) +12V Constant +12V ACC Ground Right Front (-) Left Front (+) Right Rear (-) Right Rear (-) Left Rear (+) Left Rear (-)"]
    B --> D["Red/White Orange Yellow Red Black Gray Gray/Black White White Violet Violet Violet/Black Green Green/Black"]
    B --> E["Yellow RCA"]
    B --> F["16-Pin Black Connector"]
    F --> G["CRUX"]
    G --> H["4-Pin Connector"]
    H --> I["3.5MM SWC CABLES (Option A or B)"]
    I --> J["Option A: Insulate with tape if not being used"]
    I --> K["Option B: Cap or insulate if not being used"]
    I --> L["To the aftermarket radio 3.5mm SWC port or SWC wires"]

CHIME VOLUME ADJUSTMENT:

The CS-GM43 has a potentiometer to adjust the chime volume. It is set at half way by default. To adjust the volume, simply use a suitable screw driver and turn the potentiometer clockwise to increase the volume and counter-clockwise to decrease the volume.

OEM CAMERA RETENTION:

The CS-GM43 is prewired with an RCA connector to retain the OEM camera on vehicles with a IOR system.

1. Connect Yellow video RCA to the new aftermarket radio reverse camera input.
2. Test the video feed before installing the radio back into the dashboard. (Radio may need to be set prior to testing)

DIP SWITCH SETTINGS:

AFTERMARKET RADIO DIP SWITCH SETTINGS:

RADIO BRAND:	DIP#:	1	2	3
Atoto, Dual, Fahrenheit, Jensen		OFF	ON	ON
Pioneer, Power Acoustik, Soundstream		OFF	ON	ON
Blaupunkt, Most off-brand Radio		OFF	ON	ON
Alpine		OFF	OFF	OFF
Clarion		ON	ON	OFF
Kenwood		ON	ON	ON
JVC		ON	OFF	ON
Boss, Old Sony		ON	OFF	OFF
New Sony		OFF	ON	OFF

SWC MODULE DIP SWITCH

NOTE: For Atoto, Blaupunkt, Dual, Farenheit, Power Acoustik, Soundstream, and most off-brand radios, check the aftermarket radio's manual to see if the SWC buttons need to be programmed.

3.5MM SWC CABLE

Plug in the 3.5MM to 4-Pin SWC cable to the SWC module.

NOTE: Cap or Insulate the 3.5mm plug and Blue/Yellow wire if not being used.

For aftermarket radios that have wires for SWC connections, cut off the 3.5mm plug on the Crux SWC Cable (option B) and connect the SWC wires as follows:

Note that there are some radios that only have SWC1 and SWC2, in this case “shield” does not need to be connected.

RED to SWC Key 1 WHITE to SWC Key 2 SHIELD to SWC Ground

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VEHICLE APPLICATIONS:

Cadillac

XT4

2019-Up

Chevrolet

Blazer*	2019-Up
Camaro*	2019-Up
Colorado	2019-Up
Cruze	2019
Equinox*	2019-Up
Malibu*	2019-Up
Silverado*	2019-Up
Sonic	2019-Up
Spark	2019-Up
Volt	2019

GMC

*USE GM49R-EXT or GM49S-EXT, 5 foot Extension Harness is used with GM IOR, IOU or IOS in cases where the Radio Control Module is located at front passenger side (by the door hinge). Sold separately.

Green cable with connectors and connectors, isolated on white background (no text or symbols)

Compatible with the following radio codes: IOR, IOS, IOT, or IOU

NOTE: The radio code can be found in the Glove Box.

NOTE: 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.

NOTES:

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