Introduction & Features
The RP5-GM31 interface allows the replacement of a factory radio in select General Motors vehicles with 29-bit LAN
radios. Using this interface will retain factory features such as OnStar, steering wheel controls (SWC), warning chimes,
Rear Seat Controls (RSC), factory XM Radio and the BOSE amplifier when the original radio is removed. The RP5-
GM31 also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed sensor (VSS),
illumination, reverse trigger and parking brake.
Important Notes
1. The radio select rotary switch on the side of the interface must be adjusted to the proper radio setting before plugging the
interface into the vehicle (see next page for setting chart).
2. The interface comes pre-programmed for all of the vehicles factory SWC functions and does not require programming unless
you wish to re-assign the SWC functions to different buttons. The SWC can always be restored to default settings by pressing
and releasing the program button on the side of the interface once and waiting 7 seconds for the LED to flash 3 times.
3. RSC buttons that are identical to the SWC will mimic the SWC one for one.
4. The LED will flash whenever a SWC button is pressed.
Wiring Connection Chart
Aftermarket Radio Connections
Yellow
Battery +12v
Black
Ground
Red
Acc. Output
White
Front L + input
White / Black
Front L - input
Grey
Front R + input
Grey / Black
Front R - input
Green
Rear L + input
Green / Black
Rear L - input
Purple
Rear R + input
Purple / Black
Rear R - input
Illustration / Schematic
Vehicle
Connections
Pacific Accessory Corporation
Pacific Accessory Corporation
Red / White
Purple / White
Blue
Blue / White
Orange / White
Green
Brown Loop
Wiring
XM R
XM L
| Santa Ana, California 92705 | Ph. 866-931-8021 | support@pac-audio.com
®
©2012 Pacific Accessory Corporation
Radio Replacement & Steering Wheel Control Interface
with OnStar Retention for General MotorsVehicles
Parking Brake
Output (-)
Vehicle Speed
Output
Not Used
Amp Turn On Input
Illumination Output
(+)
Reverse Output (+)
Mute Loop - See
installation note 8.
Aftermarket
Radio
Connections
www.pac-audio.com
RP5-GM31
SWC Connector
Blu/Yel
Kenwwod, Newer
JVC, OEM or
Blaupunkt
3.5mm Jack
Alpine, JVC,
Clarion, Pioneer,
Sony, Fusion, Valor,
Boyo, Dual, Visteon
or Advent
x3
SWC Connection
SWC Connection
See above chart for
different radio type
connections
Rev. 012813
Page 1
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