Axxess GMOS-09 OnStar Interface for Amplified GM Vehicles with (gmOS09) This easy to use calculator

This easy to use calculator takes up little space on your desktop and fits easily into your briefcase or desk drawer

B (5 times) – flashes on then off and repeats

Smart brake function turns ALL LEDs into a RED brake light no matter what color or pattern was visible before

2012-14 Sierra 2500 (w/o Factory Nav)

Axxess GMOS-09 OnStar Interface for Amplified GM Vehicles with (gmOS09) This easy to use calculatorAxxess GMOS 09 Designed to allow the user to require the OEM Radio with an aftermarket unit in amplified GM Vehicles with "Door n Lock" Style harness equipped vehicles with amplified audio system Retain full functionality of OnStar with adjustable volume output Retain warning and door chimes with adjustable level output Retention of Retained Accessory Power (RAP)convenience features Compatible with 2001 2003 Oldsmobile Aurora and 2000 2005 Pontiac