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RP5-GM32

Radio Replacement & Steering Wheel Control Interface 

with OnStar Retention for General Motors Vehicles

Pacific Accessory Corporation

®

 | Ph. 866-931-8021 | [email protected] 

©2016 Pacific Accessory Corporation

www.pac-audio.com

Pacific Accessory Corporation

Rev. 022516

Installation Steps

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.

2. 

Make all connections as described in the chart on page1. 

3. 

Factory  installed  amplifiers  will  determine  the  audio  output  connection.    If  the  vehicle  has  a  factory  installed  amplifier  use  the  factory 

amplifier audio location.  If a factory installed amplifier is not present use the non-amplified factory audio location. 

4. 

If the vehicle is equipped with a Premium BOSE system, connect the subwoofer and center channel RCA inputs to the aftermarket radios. 

If the aftermarket radio to be installed does not have a dedicated center channel or sub output do not use this cable. To ensure best sound 

performance channel summing is not recommended. Use this cable according to the outputs that are available.

5. 

If the vehicle is equipped with a reverse camera and the aftermarket radio has a reverse camera input, connect the yellow RCA plug on the 

gray connector to the aftermarket radios reverse camera input.

6. 

Plug the CMX chime module in if necessary (If the vehicle chimes when the radio is removed the CMX is not necessary). 

PLEASE NOTE: 

In order to get the best possible sound out of the CMX please mount it in a place free and clear of any obstructions, preferably as close as 

possible to the bottom of the dash pointing down toward the floor of the vehicle.

7. 

The Mute loop (if not cut) will turn the accessory output off when an OnStar or Bluetooth call is made or received.  If the aftermarket radio 

has a mute input cut this loop and connect the outer brown wire to the mute input.

8.  Connect the SWC wire according to the chart on page 1 (aftermarket radio MUST support a wired remote input).
9. 

If you wish to reassign functions to the SWC follow the programming instructions in the next section.

Optional Steering Wheel Control Programming

Page 2

2 3 4 5

 6 7 

8 9

 0

 

Other = 

Advent, BOYO, Dual, Lightning Audio, Visteon, 

SET RADIO SELECT SWITCH

2 3 4 5

 6 7 

8 9

 0

 

Other = 

Advent, BOYO, Dual, Lightning Audio, Visteon, 

SET RADIO SELECT SWITCH

IMPORTANT! 

The interface comes pre-programmed for the functions listed in the chart below and does not require programming 

unless 

you wish to re-assign the SWC functions or utilize short press long press dual command functionality. The SWC can always 

be restored to default settings by pressing  the program button on the side of the interface once and waiting for the timeout.

Alpine

JVC

Kenwood

Clarion

Pioneer

Sony

Fusion

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Source

Source

Source

Source

Source

Source

Source

Source

Track +

Track +

Track +

Track +

Track +

Track +

Track +

Track -

Track -

Track -

Track -

Search -

Track -

Track -

Track -

Voice

Mute

Mute

Mute

Mute

Mute

Mute

Mute

Play/Pause

Preset/Disc -

Disc/FM+

Band

Audio

Default Steering Wheel Control Programming

Default SWC Button Assignments

If you wish to re-assign the SWC functions, utilize short press long press dual command functionality or select between Factory/

Aftermarket mode, the interface must be programmed in the specific order shown in the chart on page 3. If you come across a 

function in the chart that your steering wheel does not have, or you do not want to program, press and release the program button 

on the side of the interface to skip that function. The LED will flash off and on confirming that you have successfully skipped that 

function and are ready to proceed to the next one.

Alpine

JVC

Kenwood

Clarion

Pioneer/Other

Sony

Fusion

1

2

3

4

7

8

9

Alpine

JVC

Kenwood

Clarion

Pioneer/Other

Sony

Fusion

1

2

3

4

7

8

9

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