User Manual

95-3318B

Connections to be made Installing the 95-3318B

Initializing the 95-3318B

Adjusting the 95-3318B

• Initialize the interface by turning the ignition on for 30 seconds, then turn the

ignition back off, then back on again.

• Push the OnStar button; the radio should mute, and you should hear the OnStar

voice. Push the OnStar cancel button; the radio should un-mute and play again.

Note: The radio will turn off instead if the mute wire is not connected.

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 24-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.

12-pin pre-wired ASWC-1 harness:

• This harness is to be used along with the optional ASWC-1 (not included) to

retain steering wheel audio controls. If the ASWC-1 is not being used, disregard

this harness. If it will be used, please refer to the ASWC-1 instructions for radio

connections and programming.

Note: Disregard the harness that comes with the ASWC-1.

• Connect the Red wire to the accessory wire.

Note: The relay attached to the Axxess interface is only for audible turn signal clicks.

No extra steps are required to retain this feature, so leave the relay as-is.

From the 20-pin Gray harness

To the Axxess interface:

• The male Yellow RCA jack will connect to the female Yellow RCA jack

on the 3318 harness.

To the aftermarket radio:

• Connect the Blue/Pink wire to the speed sense wire (if applicable).

Note: Only connect this wire if it is populated on the factory side harness.

• Connect the 3318 and 18-pin harness into the interface.

•

With the key in the off position, connect the 3318 and 20-pin harness into the vehicle

• With all connections completed, reconnect the negative battery terminal.

Note: If using the ASWC-1, connect it after you initialize and test the 95-3318B,

with the key in the off position.

• Mount the new radio assembly into the dash, and then reassemble the dash in

reverse order of disassembly, using the 95-3318B radio housing panel.