Adjusting the GMOS-044
Chime level adjustment:
• With the vehicle on, turn it off and leave the keys in ignition. Open the driver's
door; chimes will be heard.
• Wait 10 seconds, and then with a small screwdriver, turn the potentiometer
clockwise to raise the chime level; counterclockwise to lower the chime level.
• When the chime is at a desired level, remove the keys from the ignition. This
will lock the chime volume at its current level.
OnStar level adjustment:
• Press the OnStar button to activate it.
• While OnStar is speaking, press the VOLUME UP or VOLUME DOWN buttons on
the steering wheel to raise or lower the OnStar level.
• If the vehicle does not come equipped with steering wheel controls, find the
Black/Yellow wire on the 18-pin harness.
• While OnStar is speaking, tap the Black/Yellow wire to ground. Once the
OnStar level is set, it will stay at that level until the Black/Yellow wire is tapped
to ground again.
GMOS-044
Personalization menu
Your vehicle must be equipped with OE steering wheel controls in order to access
or change the personalization features in your vehicle. If your vehicle did not come
equipped with OE steering wheel controls, please refer to the "No OE Steering
Wheel Control Section" of this manual.
Note: Personalization menu can be set before the factory radio is removed. Time
and date cannot be adjusted in vehicles without the factory steering wheel controls.
Note: OE Screen can be disconnected in models without factory steering
wheel controls.
1. Turn off your aftermarket radio.
2. Press and hold the Off Hook button on the steering wheel for 3-seconds. After
3-seconds the personalization menu will show up on the display.
3. To scroll through the menus, use the Seek Up and Seek Down buttons on the
steering wheel.
4. To make a selection, use the Source button on the steering wheel which is the
center button between the Seek Up and Seek Down buttons.
5. Use the Off Hook button to exit the personalization menu.
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