Connections to be made
From the GMOS-LAN-01 harness to the aftermarket radio:
• Connect the Black wire to the ground wire.
• Connect the Yellow wire to the battery wire.
• Connect the Green wire to the left rear positive speaker output.
• Connect the Green/Black wire to the left rear negative speaker output.
• Connect the Purple wire to the right rear positive speaker output.
• Connect the Purple/Black wire to the right rear negative speaker output.
• The Black/Yellow wire is used for OnStar level adjustment for models that
do not come equipped with steering wheel controls. See the OnStar level
Adjustment section for further instructions.
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 GMOS-LAN-01 harness is only for audible turn signal
clicks. No extra steps are required to retain this feature, so leave the relay as-is .
Backup camera harness (if applicable):
• If retaining the factory backup camera, connect the Yellow RCA jack to the
backup camera input of the aftermarket radio.
GMOS-LAN-01
Installing the GMOS-LAN-01
With the key in the off position:
• Connect the 16-pin harness with stripped leads, and the GMOS-LAN-01
harness, into the interface.
• Connect the GMOS-LAN-01 harness to the wiring harness in the vehicle.
• If using the ASWC-1, connect it after you initialize and test the GMOS-LAN-01,
with the key in the off position.
• If applicable, connect the backup camera harness to the wiring harness in the
vehicle. This harness is located behind the radio.
Initializing the GMOS-LAN-01
Attention! If the interface loses power for any reason, the following steps will need
to be performed again. Also, if installing an ASWC-1 connect it after you initialize
and test the interface/radio, with the key in the off position.
• Turn the key (or push-to-start button) to the ignition position and wait until the
radio comes on.
Note: If the radio does not come on within 60 seconds, turn the key to the
off position, disconnect the interface, check all connections, reconnect the
interface, and then try again.
• Turn the key to the off position, pause for a moment, and then to the accessory
position. Test all functions of the installation for proper operation, before
reassembling the dash.
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