PAC RP4-GM11 Quick Start Manual Download Page 2

RP4-GM11

Radio Replacement & Steering Wheel Control Interface 

for General Motors Vehicles

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 page 1. 

If there is a Bose® Audio system present:

 Connect the RCA inputs to the

aftermarket radios pre-amp output. The audio level will vary depending on the new radios pre-amp output voltage (2-4 volts is recommended). 

If there is not a Bose® Audio system present: 

Cut the RCA inputs off and connect the aftermarket radios speaker outputs to the remaining 

wire according to the chart on page 1.

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

.

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

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 to different buttons. 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. 

PLEASE NOTE: Due to the many different possible OEM SWC configurations, 

some applications may need to be reprogrammed for the SWC assignments to make sense.

Alpine

JVC

Kenwood

Clarion

Pioneer

Sony

Fusion

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Volume -

Source Up

Source

Source

Disc/FM+

Source

Source

Source

Source

Source Down

Band

Disc/AM

N/P

Band

Band

Off

Seek Up

Track +

Track +

Track +

Track +

Track +

Track +

Seek Down

Track -

Track -

Track -

Search -

Track -

Track -

Track -

Voice

Mute

Mute

Mute

Mute

Mute

Mute

Mute

Prog

Preset Up

Preset -

Source

Band

Audio

Optional Steering Wheel Control Programming

Default SWC Button Assignments (Trucks & SUVs)

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 -

Voice

Mute

Mute

Mute

Mute

Mute

Mute

Mute

End

Source

Source

Source

Source

Source

Source

Source

Default SWC Button Assignments (Corvette)

Default Steering Wheel Control Programming

If you wish to re-assign the SWC functions or utilize short press long press dual command functionality, the interface must be 

programmed in the specific order shown on the chart below. 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 programming 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.

Short Press Long Press Dual Command Functionality

This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons. It can be used with as 

many of the buttons as the user likes or none at all. When this functionality is implemented, quickly pressing and releasing a SWC 

button will initiate the short press command while pressing and holding a SWC button for longer than two seconds will initiate the 

long press command. Please note that no long press commands are programmed by default. If you wish to assign dual command 

functionality to the SWC please follow the programming steps on the next page.

1

2 3 4 5

 6

78

Alpine

JVC

Kenwood

Clarion

Pioneer/Other

Sony

Fusion

1

2

3

4

7

8

9

Other = 

Advent, BOYO, Dual, Lightning Audio, Rockford Fosgate, Visteon 

SET RADIO SELECT SWITCH

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