OnStar Level Adjustment
To adjust the OnStar volume level find the Black/Yellow wire on the 16-pin harness.
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Push the blue OnStar button, while the voice is speaking tap the Black/Yellow
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wire to ground.
Once the volume is set it will stay at that volume until the Black/Yellow wire is
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tapped to the ground again.
This can be set during installation and then left alone. If adjustment is desired, the
user may also tap "Volume Up" or "Down" on the steering wheel (if equipped) to
adjust the OnStar level.
Chime Volume Adjustment
1) With car on, shut off car and leave keys in ignition. Open the car door and leave
it open. Chimes will be heard.
2) Wait 10 seconds, then with a small screwdriver adjust the potentiometer fully
counterclockwise (all the-way left), then clockwise to raise chime level and
counterclockwise to lower the chime level.
3) When the volume is at the desired level, remove the keys from the ignition.
This will lock the chime volume at its current level.
Audio Volume Adjustment
1) Start your vehicle and turn on the radio having audio playing.
2) Turn your aftermarket radio's volume up ¾ of the-way.
3) With a small screwdriver adjust the potentiometer clockwise to raise the audio level
and counterclockwise to lower the audio level.
4) Once at desired level your audio adjustment is complete.
Section 4
4.1