Answer by AutoToys Staff A: If you have no Onstar, you actually need http://www.autotoys.com/x/product.php?productid=480 or your truck. It will keep the power on, it is called RAP (retained accessory power) for 10 mins after you shut off the truck or until you open the drivers door. Once you open the driver's door, it will shut off the radio.
THIS IS THE ONLY INTERFACE on the MARKET for GM VEHICLES WITH CLASS II DATA BUSES AND IS COMPATIBLE WITH THE * BOSE * --AND-- * MOONSOON * SYSTEMS. ---- (OS4)
Give you ONSTAR, CHIME, 12 VOLT IGNITION, STEERING WHEEL CONTROL (if equipped)
THE GMOS-04 INTERFACE IS DESIGNED TO ALLOW THE USER TO REPLACE THE OEM RADIO WITH AN AFTER MARKET UNIT IN AMPLIFIED GM VEHICLES AND RETAIN FULL FUNCTIONALITY OF THE ONSTAR SYSTEMS AS WELL AS ALL SAFTEY AND WARNING CHIMES THE GMOS-04 WILL ALSO RETAIN THE RETAINED ACCESSORY POWER CONVENIENCE FEATURES. THIS INTERFACE HAS THE CAPABILITY OF ADJUSTING CHIME AND ONSTAR VOLUMES AS WELL. IN ADDITION TO THESE FEATURES THE GMOS-04 NOW HAS THE REQUIRD OUTPUTS FO THE INSTALLATION OF A NAVIGATION RADIO
FOR AMPLIFIED AUDIO SYSTEMS PREMIUM AND BOSE 2000-08
RETAINS ONSTAR WITH ADJUSTABLE LEVEL PUT PUTS
RETAINS CHIMES WITH ADJUSTABLE LEVEL OUTPUT
NEVIGATION OUTPUTS NOW INCLUDED
USB UPDATE INTERFACE COMPATIBLE
Provides accessory (12 volt 10 amp)
Provides NAV outputs (including mute)
Adjustable volume for chimes and OnStar
Retains balance and fade
High level speaker input
This unit is designed to be used with vehicles that have a factory amplified system including the BOSE audio system. Besides retaining the onstar system, the unit also retains ALL THE WARNING CHIMES thyat will be lost when the factory radio is removed. This unit will also provide a SWITCHED WIRE for proper wire operation.
Applications (email us if you need help):
Escalade EXT 2003-2004+
CORVETTE 05-06 (BASE MODEL ONLY WITHOUT NAV)
Malibu Classic 2004
Monte Carlo 2000-2005
Van EXPRESS 03-05
REQUIRES RCA outputs from RADIO (if rcas are not available, see LINE OUTPUT CONVERTERS in our DASH KIT DEPARTMENT)
For vehicles with BOSE digital amplifiers, the steering wheel seek buttons will control the fading of the radio. The balance control will be handled by the radio.
For vehicles with BOSE digital amplifiers, the steering wheel volume control will control the volume of the ONSTAR along with the volume of the radio. DO NOT hold down the volume button, tap control to increase/decrease volume
Retails all communications with vehicle CLASS II Data bus system
Retains Factory Onstar
Allows use of factory chime system - chime continues to come from factory front speakers.
Uses data to communicate and control (turns on and off) factory amplifier
Retains steering wheel control of aftermarket radio (if so equipped)
Onstar voice volume also controlled with factory steering wheel volume control
10 amp 12 volt switches power controlled by factory car computer
Works with most General Motors premium sound system including BOSE and MOONSOON
*All products are new unless otherwise stated.
^ Be aware of models, years and cars shown compatible in product descriptions, if your year/car/ or model is not shown, EMAIL us FIRST before buying to confirm application. You are responsible for confirming applications before purchase.
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