Instruction Manual

RP5-GM51

Radio Replacement & Steering Wheel Control Interface

with OnStar Retention for General Motors Vehicles

Pacic Accessory Corporation

| Santa Ana, California 92705 | Ph. 866-931-8021 | support@pac-audio.com

www.pac-audio.com

Pacific Accessory Corporation

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Rev. 090914

Testing & Verication

Product Updates (Firmware)

The RP5-GM51 can be updated with new rmware as it becomes available using the PAC-UP interface updater (sold separately). Please visit

www.pac-audio.com/rmware for available updates.

1. Turn the ignition on. The LED on the interface will turn on & the +12v accessory wire will turn on.

2. Turn on the radio & check balance & fade. If the vehicle has a factory amplier the speaker wires will need to be run back and connected

to the factory amplier output wires.

3. Pressing the OnStar® button on the rearview mirror will turn off the rear speakers and allow the OnStar® audio to be heard in the two

front speakers. The OnStar® active LED will also turn on. When OnStar® disconnects, the radio will un-mute or turn back on and the

OnStar® LED will turn off. Pressing the Mute/OnStar® button on the steering wheel for 1.5 seconds will also activate Onstar®. When

Onstar is activated, both the Voice and Phone buttons on the steering wheel will end OnStar.

4. Verify that all SWC are functioning properly for both the aftermarket radio and OnStar. To adjust OnStar volume, press the OnStar button

on the mirror or steering wheel then use the volume buttons on the SWC to adjust the level. If the vehicle is not equipped with steering

wheel controls you can use the SWC programming button to raise the volume of the OnStar. The volume will raise a total of 10 steps

before returning to the lowest setting.

5. Turn off vehicle & remove key. RAP will be active & keep the radio on for 10 minutes or until the drivers door is opened.

6. The LED & radio will turn off when RAP turns off or the drivers door is opened.

7. Use the 4 position selector switch located on the side of the CMX module to select the best chime output volume for your specic

installation. Setting 1 being loudest and 4 softest.

CMX

chime module