RadioPRO RP5-GM31 Instruction Manual

RP5-GM31

Radio Replacement & Steering Wheel Control Interface 

with OnStar Retention for General MotorsVehicles

Pacific Accessory Corporation

®

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

©2012 Pacific Accessory Corporation

www.pac-audio.com

Rev. 012813

Pacific Accessory Corporation

Introduction & Features

Important Notes

Wiring Connection Chart

Illustration / Schematic

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.

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.

Red / White

Parking Brake 

Output (-)

Purple / White

Vehicle Speed 

Output 

Blue

Not Used

Blue / White

Amp Turn On Input

Orange / White

Illumination Output 

(+)

Green

Reverse Output (+)

Brown Loop

Mute Loop - See 

installation note 8.

 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

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

SWC Connection

See above chart for 

different radio type 

connections

x3

Wiring

SWC Connection

Page 1

XM R

XM L

Aftermarket 

Radio 

Connections

Vehicle 

Connections