Overview: The GMOS-LAN-03
Interface is designed to retain the ONSTAR emergency services function and retain the warning chimes that are
normally lost when the factory radio is removed and replaced by an aftermarket
head unit. It also provides a 12-volt accessory output for proper aftermarket
head unit operation and supports your vehicle's factory R.A.P. (Retained
Accessory Power). In addition, the GMOS-LAN-03 also provides a Mute, Parking
Brake, VSS or Speed Sense, and a Reverse Output to make installation of an
aftermarket navigational head unit simpler and less time consuming. The
GMOS-LAN-03 supports the Axxess Steering Wheel Control Interface (sold
Compatibility: The GMOS-LAN-03
is compatible with the following Chevrolet, Pontiac and Saturn vehicles.
Note: Not compatible
with factory amplified sound systems. Please consult the
Crutchfield Car Selector for your vehicle's compatibility.
Connections: The GMOS-LAN-03
consists of a single interface with a 16-pin connector on one of the module and
and 18-pin connector on the other end; plus includes
two harnesses. One harness includes a
16-pin plug that plugs into the 16-pin connection on the interface (beside potentionmeter) and its bare
lead wires are hardwired into your new radio's harness. The other harness also
includes a 18-pin plug that plugs into the other 18-pin connection of the interface
and includes bare wires that hardwire into your new aftermarket radio's harness
and GM factory plugs that plug into the factory side plugs behind the radio.
Chime Volume Adjustment: The
GMOS-LAN-03 interface features potentiometer located on the 10 pin harness of
the module, to adjust the chime volume of your vehicle. Rotate clockwise to make
the chime louder and counterclockwise to make the chime softer.
Navigation Compatible: The GMOS-LAN-03 also provides Mute,
Parking Brake, VSS or Speed Sense, and a Reverse Output to make installing an
aftermarket Navigation radio simpler and less time consuming.
Retained Accessory Power (R.A.P.): The ignition power source
of most GM vehicles keeps the radio on until one of the doors is opened. This
feature is called the R.A.P. (retained accessory power). The GMOS-LAN-03 is
designed to retain this feature.
OEM Steering Wheel Control Compatible (optional): The
GMOS-LAN-03 features a right-angle 3.5mm connector that lets you keep your
vehicle's OEM steering wheel controls via the optional Axxess Steering Wheel
Control Interface (120ASWC1,
Note: Your vehicle must have factory steering wheel
controls to retain access to the factory customization menu, once the
factory radio is replaced with an aftermarket head unit.
Optional RSE Retention Harness: The Metra GMRSAV (120GMRSAV,
sold separately) is an RSE retention harness designed to retain the rear seat
entertainment system in these select GM vehicles. The GMRSAV provides an
audio/video input to the factory overhead video screen from your new aftermarket
radio, and provides the audio/video output from the rear seat control panel to
the aftermarket head unit.
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