PAC GM6A-RST Manual

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Side 1/6

Radio Replacement Interface for General Motors Vehicles

with 29-bit V2 and with or W/O BOSE and OnStar

Rev. 12/2/24

GM6A-RST

Page 1

Introduction and Features

Important Notes

The GM6A-RST interface allows the replacement of a factory radio in select General Motors vehicles with 29-bit LAN v2, 20-pin and

16-pin connector radios. Using this interface will retain factory features such as BOSE, OnStar, vehicle settings, steering wheel

controls (SWC), front and rear park assist and warning chimes when the original radio is removed. The GM6A-RST also provides data

bus driven outputs such as retained accessory power (RAP), vehicle speed (VSS), illumination, reverse trigger and parking brake.

1. Please make your vehicle settings selections before removing the factory radio for optimal installation time. Once the radio has been removed,

the vehicle settings which are normally selected through the factory radio can be accessed and changed by downloading and installing the

PAC RadioPRO PC Application from http://www.pac-audio.com/rmware.

2. Before removing your factory radio, please review the following settings as these will not be retained once the factory radio is removed:

USB PortRadio Select

DIP switches

Interface Connector 4

Adjustment Dial Programming Button

Module Layout

Interface Connector 1 Interface Connector 2 Interface Connector 3

LED 2

Expansion Port

Non-Amplied

Audio Output

LED 1

Amplied

Audio Output

• Ambient Lighting Control

• Teen Driver Feature

• Valet Mode

• Rear Park Assist Symbols displayed on Reverse Camera Image

• OnStar Text

• Performance Data Recorder

• Custom Launch Control (Line Lock, Launch Control)

3. When you plug in the module for the rst time, it must go through an initialization process that takes up to 12 seconds. Make sure you have

the vehicle running diring this process.

4. The radio select dip-switchs on the side of the interface must be adjusted to the proper radio setting before plugging the interface into the

vehicle (see page 2 for setting chart).

5. The Voice button can be set to activate the factory OnStar function by using the RadioPRO PC Application. By default, this button is

re-programed to control the aftermarket radios voice function.

6. 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, utilize the buttons that have no initial programming or utilize short press long press dual command functionality.

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 ash 4 times.

• Chevrolet Malibu and Camaro will require SWC re-mapping. Failure to do this will result in irregular steering wheel control functionality.

• Chevrolet Camaro: You will not be able to control the volume of OnStar or launch OnStar with the SWC.

7. The VS41 can be added to control Rear, Frotn ,Left, Right cameras through the interface. See Page 5 for details.

8. Language: In some vehicles the Lauguage setting is controled over MOST. Please make sure that you adjust this accordlingly before removing

the radio as this will not show up in most cases after your install.

9. For Referencing (IO) Codes. Please refer the vehicles RPO CODE sticker normally located in the vehicles glove box or the underside of the

spare tire cover.

Radio Replacement Interface for General Motors Vehicles

with 29-bit V2 and with or W/O BOSE and OnStar

Rev. 12/2/24

GM6A-RST

Page 2

Installation Steps

Set DIP switches that correspond with your radio to the ON position.

Set all other DIP switches to the OFF position.

If your brand is not listed above, please use “ALL OTHER BRANDS.”

Alpine JVC

Kenwood /

Lightning

Audio

Stinger

Clarion /

Nakamichi

All Other

Brands

Pioneer Sony Fusion

1 2 1 & 2 3 3 1, 2, & 3 1, 2, & 3 4 1 & 4

1. Set the Radio Select DIP switches according to the radio you are installing.

2. Wire your aftermarket radio to the GM6A-RST’s harness according to the wiring connections chart on Page.3.

3. Cut the Brown mute loop in If not cut will turn the GM6A’s accessory output off, when any OnStar Interface Connector 4.

function is active.

4. Plug into the appropriate ports on the GM6A-RST interface (using the diagram on page 1 or Interface Connectors 1 & 2

the label on the bottom of the interface).

5. The Interface Connector 3 connection port will be dependent upon whether or not the vehicle has a factory amplied

system. Plug this connector into the appropriate port on the GM6A-RST (using the diagram on page 1 or the label on the

bottom of the interface).

6. Remove the factory radio and plug in the GM6A-RST’s Vehicle Connector 1, 2, & 3 into the factory vehicle harness. Vehicle

Connector 3 might . In vehicles with IOA / IOB use not be present in all vehicles Vehicle Connector 7 to adapt your main

harness to your vehicle. (NOT FOR USE IN IMPALA, IMPROPER USE OF THIS HARNESS WILL RESULT IN EQUIPMENT

DAMAGE.)

7. Vehicle Connectors 4 & 5 are used when removing the factory CD player in the dash and are mandatory that they are

plugged in to keep the MOST loop Intact. Failing to plug these in will result in no sound. Not all connectors may be present.

8. Vehicle Connector 6 (GM5CAM-DIS-HAR) will only be used in vehicle with an IOB Build Code and will be connected to

the harness that was plugged in to the factory display once removed. This is used to maintain the camera signal in IOB build

code vehicles.

Interface Connector 1

(3-pin)

Interface Connector 2

(20-pin)

Interface Connector 4

(24-pin)

Interface Connector 3

(12-pin)

Vehicle Connector 1

(20-pin)

Vehicle Connector 2

(16-pin)

Vehicle Connector 3

(8-pin)

Vehicle Connector 7

(Adapter)

NOT FOR IMPALA

Vehicle Connector 4

(10-pin)

Vehicle Connector 5

(12-pin)

Vehicle Connector 6

(20-pin)

Produkt Specifikationer

Mærke:	PAC
Kategori:	Ikke kategoriseret
Model:	GM6A-RST

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