The GM2000 General Motors Interface allows you to retain existing safety features, warning indicators and other functionality when upgrading to an aftermarket radio. GM2000 preserves a healthy status in internal diagnostics by sending the proper data commands to your vehicle's ECM (Electronics Control Module). GM2000 works properly with factory systems with OnStar and Standard Bose (OnStar use will be disabled after GM2000 is installed). Also includes: a red +12V switched accessory power source for aftermarket stereos. *Includes harness
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General Motors Interface