PAC GM1A-RS Manual Download Page 3

GM1A-RS

Radio Replacement Interface with

Steering Wheel Control Retention

for select General Motors Vehicles

with Class II Data-Bus

 © 2018 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.

PAC-audio.com

Pacific Accessory Corporation

Rev: V8

Date: 080118

Page 3

Alpine

JVC

Kenwood

Clarion

Pioneer

Sony

Fusion

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Seek Up

Track +

Track +

Track +

Track +

Track +

Track +

Seek Down

Track -

Track -

Track -

Search -

Track -

Track -

Track -

Preset

Preset Up

Preset/Disk 

Down

Preset

Mute

Preset Up

Preset Up

Audio

Voice

VR

VR

VR

VR

VR

VR

Mute

End

End

Reject

On Hook

End

End

Answer / End

Source

Default SWC Button Assignments (Corvette)

Default Steering Wheel Control Programming

Default SWC Button Assignments

Programming Button and Adjustment Dial Functions

You can press and hold the programming button on the side of the interface to access different programming modes. Once the 

LED is lit to the mode you desire (see below for modes), immediately release the programming button to access that mode.

PLEASE NOTE:

 

•  This process must be done with the interface in the vehicle and the key in the ignition position.

• 

If there is a Premium Bose system (Y91 / UQA), and you are also installing an amplifier on the cabin speakers, 

make sure that the chime speaker is connected before proceeding. See the RadioPRO app section on Page 5 for 

more details.

A. 

1 Chime and LED 1 flash green: 

SWC re-assignment

. This allows you to re-assign the SWC functions to the buttons 

of your choice. Please see the Optional Steering Wheel Control Programming instructions on Page 4 for more details.

B. 

2 Chimes and LED1 flash amber: 

SWC re-calibration

 (this mode is available in the 

Corvette only

).This allows you 

to re-calibrate the analog SWC in the event they fall out of the expected range and do not function properly. If data 

control SWC are detected by the interface, this mode will be automatically skipped.

C. 

3 Chimes and both LEDs flash green: 

Chime volume adjustment

 This allows you to adjust the volume of the 

chimes generated by the interface using the adjustment dial on the side (this mode is not available in vehicles 

equipped with Premium Bose (Y91 / UQA) amps). If a Premium Bose amp is detected by the interface, this mode will 

be skipped as the factory amp is what generates the chimes. Please see the vehicles owner’s manual for adjustment of 

chime volume in vehicles with Premium Bose (Y91 / UQA).

D. 

4 Chimes and LED 1 flash red: 

Master reset

LED 1 will flash red

 and you will hear four chimes. This does a master 

reset of the interface and restores the following settings to factory defaults:

•  SWC Mapping

•  SWC Calibration

•  Camera Settings

•  Infotainment Settings

•  Interface User Options

Alpine

JVC

Kenwood

Clarion

Pioneer

Sony

Fusion

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Source Up

Source

Source

Source

Source

Source

Source

Source

Source Down

Band

Band

Mute

Band

Band

Band

Off

Seek Up

Track +

Track +

Track +

Track +

Track +

Track +

Seek Down

Track -

Track -

Track -

Search -

Track -

Track -

Track -

Voice

OnStar

OnStar

OnStar

OnStar

OnStar

OnStar

OnStar

Prog

Preset Up

Preset -

Preset

Mute

Audio

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