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Crux CS-GM31L Wiring Interface

Connect a new car stereo and keep your steering wheel audio controls and other factory features in select 2014-19 General Motors vehicles

Item # 249CSGM31L

Crux's CS-GM31L interface ensures that you can keep the factory steering wheel controls in your GM vehicle when...

Find what Fits your car

Crux's CS-GM31L interface ensures that you can keep the factory steering wheel controls in your GM vehicle when...

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Item # 249CSGM31L

In stock
$99.99

About the Crux CS-GM31L Wiring Interface

Upgrade your radio

Crux's CS-GM31L interface ensures that you can keep the factory steering wheel controls in your GM vehicle when installing a compatible aftermarket radio. Connect this interface to the wires on your new stereo's wiring harness, and you've covered the power, ground, and factory speaker connections for your new stereo. You'll also retain your vehicle's safety chimes, backup camera, rear seat entertainment system, and retained accessory power (RAP).

Upgrade your radio

Crux's CS-GM31L interface ensures that you can keep the factory steering wheel controls in your GM vehicle when installing a compatible aftermarket radio. Connect this interface to the wires on your new stereo's wiring harness, and you've covered the power, ground, and factory speaker connections for your new stereo. You'll also retain your vehicle's safety chimes, backup camera, rear seat entertainment system, and retained accessory power (RAP).

Note: The CS-GM31L interface allows you to keep your steering wheel controls with radios from Alpine, Blaupunkt, Boss, Clarion, Dual, Jensen, JVC, Kenwood, Pioneer, Sony, and Soundstream.

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Product highlights:

  • connect a new stereo in select 2014-18 General Motors vehicles
  • retain your steering wheel controls with compatible car stereos
  • retains these vehicle functions:
    • safety chimes
    • backup camera
    • rear seat entertainment system (RSE)
    • retained accessory power (RAP)
  • does not retain OnStar or Bose amplifier
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # CS-GM31L

What's in the box:

  • Radio replacement interface
  • Wiring harness
  • SWC harness
  • Installation Instructions

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More details on the Crux CS-GM31L Wiring Interface

Stacey B.

Product Research

Features

Radio Replacement Interface: The CRUX CS-GM31L is a radio replacement interface for select GM LAN V2 (LIN) Bus vehicles. It facilitates the integration of an aftermarket radio and enables retention of specific factory features (such as steering wheel controls) when replacing a factory installed radio in select GM vehicles.

Note: This interface does not retain the vehicle's factory OnStar or Bose amplifier, if equipped.

Vehicle Compatibility: The CRUX CS-GM31L radio replacement interface works with the following 2014-2018 GM LAN V2 (LIN) Bus vehicles.

Make Model Year
Buick Encore 2015-2016
Envision 2017
Lacrosse 2016
Regal 2014-2015
Cadillac ATS 2015-2016
CTS 2014-2015
Escalade 2015
SRX 2015-2016
XTS 2017
Chevrolet Camaro (w/ 8" screen) 2016-218
Colorado 2015-2016
Cruze 2016
Impala 2014-2016
Malibu 2016
Malibu (w/ 8" screen) 2018
Silverado 2014-2017
Silverado (w/ 8" screen) 2018
Silverado HD 2015-2017
Sonic 2016
Spark 2015-2018
Suburban 2015-2018
Tahoe 2015-2018
GMC Acadia (w/ 8" Screen) 2017
Canyon 2015-2016
Sierra 2014-2016
Sierra (w/ 8" Screen) 2017-2018
Sierra HD 2015-2017
Yukon 2015-2018
Yukon XL 2015-2017

Steering Wheel Controls: The CRUX CS-GM31L also features a steering wheel control output for Alpine, Blaupunkt, Boss, Clarion, Dual, Jensen, JVC, Kenwood, Pioneer, Sony, and Soundstream aftermarket head units. The steering wheel control output consists of a right-angle 3.5mm connector and a light blue/yellow wire (use the connection that your aftermarket head unit is outfitted with). The CS-GM31L interface module will work with any of the listed aftermarket head units, by setting its dip-switches (see owner's manual for appropriate setting).

Backup Camera w/ Reverse Gear Output: The CS-GM31L allows you to retain your GM vehicle's backup camera through the included backup camera harness with male composite video connector. Your in-dash aftermarket stereo must have a composite video camera input and a built-in video monitor. The radio replacement interface module also provides a Reverse Gear output for automatic rearview switching with your aftermarket receiver.

Note: The factory backup camera is only retained in vehicles with the RPO code IO3 factory radio. Otherwise, the factory backup camera will no longer function.

Retained Accessory Power (R.A.P.): 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 GS-GM31L is designed to retain the R.A.P. 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 Chimes: The Crux CS-GM31L 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.

+12V Accessory Output: In many GM vehicles, there is no 12-volt accessory wire in the factory harness, which requires the installer to run an accessory wire to the fuse box or underneath the steering column when installing an aftermarket radio. The CS-GM31L is designed to provide a 12V/5A switched accessory output (red wire).

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