PAC Audio GM3A-RSTX Instructions

Radio Replacement and Steering Wheel Control Interface

SWC Connection

See above chart for different radio type connections

XM R

XM L

GM3A-RSTX

with OnStar Retention for General Motors Vehicles

Introduction and Features

The GM3A-RSTX 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 amplier when the original radio is removed. Use of this

interface also allows you to program two radio functions to each SWC button by using short press long press dual command functionality. The GM3A-RSTX also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed signal (VSS), illumination, reverse trigger and parking brake.

Important Notes

1. These instructions only apply to R.2.6.6.19 or later revisions. The revision info can be found on a small white sticker on the interface and packaging.

2. 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).

3. 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 or utilize short press long press dual command functionality. The SWC can always be restored to default settings by following the procedure outlined on page 2.

4. RSC buttons that are identical to the SWC will mimic the SWC one for one.

5. The LED will ash whenever a SWC button is pressed.

Wiring Connection Chart

Aftermarket Radio Connections

Yellow * +12v from RP Advanced

Yellow * +12v from vehicle

Black ** Ground from RP Advanced

Black ** Ground from vehicle

Red Acc. Output

White Front Left + input

White / Black Front Left - input

Grey Front Right + input

Grey / Black Front Right - input

Green Rear Left + input

Green / Black Rear Left - input

Purple Rear Right + input

Purple / Black Rear Right - input

Illustration / Schematic

Wiring SWC Connection

Power and speaker

connections

SWC Connector

Light Green Parking Brake Output (-)

Pink Vehicle Speed Output

Blue Not Used

Blue / White Amp Turn On Input

Orange / White Illumination Output (+)

Purple / White Reverse Output (+)

Brown Loop

IMPORTANT NOTES REGARDING YELLOW AND BLACK WIRE CONNECTIONS

* Connect both Yellow wires from the RP Advanced harnesses to the radio’s 12v constant input ** Connect both Black wires from the RP Advanced harnesses to the radio’s ground input.

Aftermarket

Radio

Connections

Mute Loop - See

installation note 8.

Blue / Yellow Kenwood, Newer JVC

Alpine, JVC, Clarion,

Pioneer, Sony, Fusion,

3.5mm Jack

Boyo, Dual, Lightning

Audio, Visteon or

Advent

Vehicle

Connections

Factory reverse camera and

auxiliary input retention harness

PAC-audio.com

Rev: 1

Date: 100318

Page 1

Radio Replacement and Steering Wheel Control Interface

Alpine JVC Kenwood Clarion Pioneer Sony Fusion

Volume +

Volume + Volume + Volume + Volume + Volume + Volume + Volum e +

Volume -

Volume - Volume - Volume - Volume - Volume - Volume - Volum e -

Source

Source Source Source Source Source Source Source

Track +

Track + Track + Track + Search + Track + Track + Track +

Track -

Track - Track - Track - Search - Track - Track - Track -

Voice

Voice Voice Voice Voice Voice Voice Mute

Play/Pause

Preset + Preset/Disc - Disc/FM+ Band Preset + Preset + Audio

GM3A-RSTX

with OnStar Retention for General Motors Vehicles

Installation Steps

SET RADIO SELECT SWITCH

Alpine JVC

Kenwood /

Lightning Audio

Clarion /

Nakamichi

Pioneer /

Other*

Sony Fusion

1 2 3 4 7 8 9

*Other - Dual / Axxera, Jensen, Rockford Fosgate

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. Be sure to connect both Yellow wires (one from vehicle harness and one from RP Advanced harness) and both Black wires (one from vehicle harness and one from RP Advanced harness) while making these connections.

3. Factory installed ampliers will determine the audio output connection. If the vehicle has a factory installed amplier, use the factory

amplier audio location. If a factory installed amplier is not present, use the non-amplied 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 radio. 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 Brown connector to the aftermarket radio’s reverse camera input.

6. If the aftermarket radio is equipped with an auxiliary input and you wish to retain the factory XM tuner, plug the RCA connectors from the interface into the radio’s auxiliary input.

7. 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 oor of the vehicle.

8. 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 inner Brown wire (next to the Blue / White wire) to the mute input.

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

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

Default Steering Wheel Control Programming

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.

Default SWC Button Assignments

Optional Steering Wheel Control Programming

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 specic order shown in the chart on page 4. 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 ash off and on conrming that you have successfully skipped that

function and are ready to proceed to the next one.

PAC-audio.com

Rev: 1

Date: 100318

Page 2

+ 4 hidden pages

PAC Audio GM3A-RSTX Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual