After installation, the ONSTAR LOCKPICK will allow your aftermarket Bluetooth Handsfree kit to interface directly with your vehicle’s ONSTAR system. When you are making or receiving a call, your ONSTAR will be activated and the audio can be heard through your factory sound system. The ONSTAR LOCKPICK contains a simple “T” harness for connection to your radio. This “T” harness also has connections for your Handsfree kit to supply power for it, and connect to its radio mute function. A separate harness allows connections to the line level audio output of your Handsfree kit so you will not have to use any of the extra speakers which may have come with your kit. You can listen to your conversations just as you would an ONSTAR message and the sound will play through your factory sound system.
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Information on Upgrading Certain OnStar® Generation 5 Analog/Digital-Ready Systems to OnStar® Generation 6 Dual-Mode (Analog/Digital) This bulletin is being issued to provide dealer personnel with information and procedures to follow should an owner wish to upgrade their OnStar® Generation 5 analog/digital-ready system to an OnStar® Generation 6 Dual-mode (analog/digital) system.
Service Procedure
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The GMRC-03 is designed to be used in Cadillac’s that do not have Onstar or amplified systems. It will retain the warning chimes that are lost when the factory radio is removed. The GMRC-03 will also provide a 12 volt switched accessory wire for proper radio operation. *Note: The GMRC-03 can be used in Cadillac’s that come with a factory amplifier; however the factory amplifier must be bypassed and the speaker wires on the GMRC-03 must not be used. Running new wires to the speakers is recommended. If the Cadillac also has Onstar, that feature will be lost.
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Before beginning repairs on the electrical system: Obtain the anti-theft radio security code. Switch the ignition off. Disconnect the battery Ground (GND) strap. On vehicles equipped with Audi Telematics by OnStar , switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery Repair Manual, Communication, Repair Group 01 .
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