About the Crux GM49R-EXT Wiring Harness
What's in the box:
Crux GM49R-EXT Wiring Harness owner's manual
If you need assistance accessing this owner's manual, please give us a call.- 5' Radio replacement extension harness
- Installation Instructions
Other info:
- MFR # GM49R-EXT
- Item # 249GM49RE
- California customers: Please click here for your Proposition 65 WARNING.
More details on the Crux GM49R-EXT Wiring Harness

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Features
Vehicle Compatibility: The Crux GM49R-EXT is a 5' radio replacement extension harness that can be used in conjunction with Crux's CS-GM43 radio replacement interface module (sold separately) for select 2019-up GM vehicles where the factory radio control module is located at the front passenger side (by the door hinge).
Make | Model | Year |
---|---|---|
Chevrolet | Camaro | 2019-up |
Equinox | 2019-up | |
Malibu | 2019-up | |
Silverado | 2019-up | |
GMC | Acadia | 2019-up |
Sierra 1500 | 2019-up | |
Terrain | 2019-up |
Notes:
- The GM49R-EXT can only be used with GM vehicles that have a factory IOR code radio installed (not compatible with IOS, IOT, or IOU code factory radios).
- You'll usually find the IOR code listed on the service parts chart in the vehicle's glove box. In newer model GM vehicles, look for the IOR code on the Vehicle Certification Label on the driver's door jamb opening.
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