Testing the GMOS-100
•
Turn the ignition "on". Then turn the aftermarket radio "on".
•
Press the OnStar button, the radio should turn "off" (radio will mute if mute wire is
connected) and you should hear OnStar.
•
Push the OnStar cancel button and the radio should come back "on".
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GMOS-100
Section 4
GMOS-100
4.0