GM21SR

GM LAN High Speed Stereo Replacement Interface
Part Number: GM21SR
$169.99
Sku#0255GM21SR

GM Stereo Replacement Interface

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  • Description

    -GM LAN high Speed stereo replacement interface
    -12V Accessory power driven via data, fully compatible with factory RAP system (Retained Accessory Power)
    -Retains full OnStar functionality
    -Compatible with both non-Bose and Bose



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    Why do I need to spend extra money on an interface?
    An interface is a small computer system that allows your new head unit to properly communicate with your vehicle’s computer system. If you install a new aftermarket radio without using an interface, you will lose many of the standard security features of the vehicle. This is due to vehicle manufactures running part of the vehicle’s computer system through the OEM radio. Functions lost include, but not limited to, are warning chimes (keys left in ignition, lights left on, low fuel etc.), security and alarm systems, +12V accessory and more. If the +12V accessory is lost, your radio will not turn on/off automatically and will be a manual process.


    California Proposition 65
    WARNING: This product contains chemical(s) known to the State of California to cause cancer and birth defects and other reproductive harm.
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