Radio Replacement Interface
for select General Motors Vehicles
with Class II Data-Bus
GM1A-R
© 2018 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.
PAC-audio.com
Pacific Accessory Corporation
Rev: V7
Date: 072418
Page 2
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 3 for
more details.
A.
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.
B.
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).
C.
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 Calibration
• Infotainment Setting
• Interface User Options
Programming Button and Adjustment Dial Functions
SWI-DIRECT Steering Wheel Control Output Connector
1. The GM1A-R provides a SWC output connector labeled “Connect to PAC Steering Wheel Control Interface” (Fig. A)
attached to the harness. For ease of installation, all necessary connections have been made for you.
2. You can use either a PAC SWI-RC or an SWI-CP2 (sold separately).
a. When using an SWI-RC, the loop on the output connector should remain intact. Set the
SWI-RC to version two and program the buttons according to the SWI-RC instructions.
b. When using an SWI-CP2, use the DIP switch settings provided for the GM1A-R in the
ControlPRO application. The steering wheel controls will be preconfigured for the vehicle
and radio but can be customized using the ControlPRO application. The loop on the output
connector should remain intact.
Fig. A
These products have settings that are adjustable through our RadioPRO PC app or through the push-button on the module.
Some settings are only adjustable through the PC app. Some of these settings require the module to be connected to the
vehicle. Below is a breakdown of these settings.
CONNECTED TO CAR
NOT CONNECTED TO CAR
Chime volume (excluding Premium Bose Y91/UQA)
YES
NO
YES
Factory amplifier settings:
Bass, Mid, Treble, Gain, and Fade
(Premium Bose Y91/UQA only)
YES
NO
GAIN ONLY
OnStar volume (RST or RT products only)
YES
NO
YES
Read product version
YES
YES
N/A
Update firmware
YES
YES
N/A
Camera settings (VS41 required)
YES
YES
NO
AVAILABLE ON PC APP
AVAILABLE ON MODULE
SETTING
Adjustable Settings
Related Downloads
• RadioPRO PC App - http://aampglobal.com/RadioProApp
• Latest instruction manuals - search part number on pac-audio.com, and look on “Downloads” tab
