BCI-GM31

Introduction & Features

The BCI-GM31 is a Navigation Unlock integration interface that allows the factory navigation features of your 29-bit GM LAN radio or the reverse camera to be used by the passenger at anytime.

Installation

Disconnect the black 14-pin and brown 16-pin harness from the back of the radio. Connect the male 14 & 16 Pin connectors of the BCI-GM31 harness into the 14-pin and 16-pin ports on the back of the radio. Connect the factory 14-pin and 16-pin harness into the female connectors on the BCI-GM31 harness. Connect the black 24-pin micro-fit connector of the BCI-GM31 harness into the BCI-GM31.

Adding a Reverse Camera

The radio's camera reverse input will need to be enabled via the dealership using the GM MDI tool. Once enabled, disconnect the yellow RCA's in the BCI-GM31 harness and connect the radio side RCA to the aftermarket camera's video output RCA. To view the reverse camera at anytime, power the aftermarket reverse camera via accessory +12V, not a reverse +12V signal.

Vehicles Equipped with a Factory Reverse Camera

To enable viewing the factory reverse camera at anytime, the factory reverse camera must be powered when this feature is active. Connect the BCI-GM31's red camera turn-on wire to the factory power wire for the reverse camera. The location of this wire varies by vehicle. Please see below for different locations.

? Note: If the Reverse Camera unlock feature is not desired, this wire does not need to be located and connected.

Connection Diagram Description

The diagram shows connections from the Factory Radio to the BCI-GM31, and from the BCI-GM31 to the Vehicle.

• BCI-GM31 Wire Colors & Functions:
• Red: Factory Reverse Camera Power Wire Location
• Black: Ground Output
• Brown: Reverse Camera Trigger Input (-)

The BCI-GM31 unit is labeled as a "GM LAN 29bit Universal Navigation Unlock Interface". The harness is labeled "BCI-GM31-HAR".

Factory Reverse Camera Power Wire Location (2007-2008 Vehicles)

1. Locate the reverse camera module underneath the passenger seat (Refer to Fig A).
2. The reverse camera wire is the blue wire in pin 1 of the 12-pin plug (Refer to Fig B).
3. Connect the BCI-GM31's red camera turn-on wire to this blue wire using a diode (Refer to Fig C). A diode is required to prevent the reverse lights from activating when the reverse camera is engaged.
4. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

? Note: For 2007-2008 vehicles without the reverse camera module under the passenger seat, refer to subsequent pages for alternate wire locations.

Fig A Description: Shows the location of the reverse camera module under the passenger seat.

Fig B Description: Highlights the 12-pin plug and the blue wire (pin 1) identified as the reverse camera wire.

Fig C Description: Illustrates connecting the red camera activation wire from the BCI-GM31 to the blue camera wire using a diode.

Reverse Camera Wire Location (2009 Avalanche/Escalade/Suburban/Tahoe/Yukon)

1. Locate the junction block underneath the driver's dash, to the right of the kickpanel on the firewall (Refer to Fig A).
2. Remove the cover and locate the 8-pin gray plug in the top-left corner of the junction block (Refer to Fig B).
3. The reverse camera wire is the blue wire in pin 2 (Refer to Fig C).
4. Connect the BCI-GM31's red camera turn-on wire to this blue wire.
5. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

Fig A Description: Shows the location of the junction block under the driver's dash.

Fig B Description: Highlights the 8-pin gray plug within the junction block.

Fig C Description: Identifies the blue wire in pin 2 as the reverse camera wire.

Reverse Camera Wire Location (2009 H2)

1. Locate the BCM underneath the driver's dash, to the left of the Steering Column (Refer to Fig A).
2. Pull the release tab at the bottom and slide the BCM down. Locate the brown plug that is the third one up (Refer to Fig B).
3. The reverse camera wire is the blue wire in pin 4 (Refer to Fig C).
4. Connect the BCI-GM31's red camera turn-on wire to this blue wire.
5. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

Fig A Description: Shows the location of the BCM under the driver's dash.

Fig B Description: Highlights the brown plug on the BCM.

Fig C Description: Identifies the blue wire in pin 4 as the reverse camera wire.

Reverse Camera Wire Location (2009 Acadia/Enclave/Outlook/Traverse

1. Locate the BCM underneath the driver's dash, to the left of the Steering Column.
2. Locate the gray plug that is all the way in the back (Refer to Fig A).
3. The reverse camera wire is the blue wire in pin 3 (Refer to Fig B).
4. Connect the BCI-GM31's red camera turn-on wire to this blue wire.
5. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

Fig A Description: Shows the location of the BCM and the rear gray plug.

Fig B Description: Identifies the blue wire in pin 3 as the reverse camera wire.

Reverse Camera Wire Location (2009 All Other Vehicles)

2009 Silverado/Sierra:

1. Locate the BCM underneath the driver's dash, to the left of the Steering Column.
2. The reverse camera wire is a light green wire located in pin 2 of connector 7.
3. Use a multimeter to verify that this wire measures 12V when the vehicle is put into reverse.
4. Connect the BCI-GM31's red camera turn-on wire to this green wire.
5. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

2009 Vue:

1. Locate the BCM underneath the radio in the center console.
2. The reverse camera wire is a light green wire located in pin 2 of connector 6.
3. Use a multimeter to verify that this wire measures 12V when the vehicle is put into reverse.
4. Connect the BCI-GM31's red camera turn-on wire to this green wire.
5. Verify that the reverse lights do not activate when the reverse camera unlock feature is used.

? Note: If you encounter difficulty locating the reverse wire or it is not in the specified locations, please contact PAC technical support at 866-931-8021 for assistance.

Operation

BCI-GM31 Controls

The BCI-GM31 is operated using the vehicle's steering wheel controls (SWC).

Activating the Navigation Unlock

Press and hold the "Source" button on the SWC for two seconds. The vehicle's information center will display "Confirm Safe Use" with one chime. Press the "Source" button again to acknowledge "safe use," confirming that usage will be by the passenger only while the vehicle is in motion. This activates the BCI-GM31. To de-activate, press and hold the "Source" button until two chimes are heard.

? Note: When connected with a BLU-GM29, an additional chime may occur after 1 second. Continue holding the Source button for 5 seconds to activate/de-activate.

Activating the Reverse Camera

First, activate the navigation unlock using the SWC. Ensure both control lights on the rearview mirror controls (on the driver's door) are off and not controlling either mirror. Press down on the control pad. The rearview camera image will now display on the navigation screen.

? Note: For vehicles without power mirrors, a toggle switch must be installed between the brown and black wires on the BCI-GM31 harness to activate the reverse camera. Refer to the connector schematic on page 1.

Warning

⚠️ WARNING: To prevent distraction and potential accidents, the driver must never use systems unlocked by the BCI-GM31 while the vehicle is in motion. The driver must always maintain attention on the road, even when the passenger is operating these features.

Installation and Compatibility Notes

• The BCI-GM31 text will not be displayed when OnStar Turn-by-Turn Navigation is active.
• If installing with a BLU-GM29: The BCI-GM31 must be connected directly to the radio for both modules to function correctly. The connection order should be: BCI-GM31 to radio, BLU-GM29 to BCI-GM31 harness, then BLU-GM29 harness to vehicle. BLU-GM29 Controls must be de-activated, and no phone call should be active for proper BCI-GM31 control.
• If reverse lights activate with the reverse camera unlock feature, and a diode was installed on the camera turn-on wire, the connection may need to be made at the actual reverse camera.

Disclaimer and Agreement

Disclaimer: Pacific Accessory Corporation (PAC) and its distributors are not liable for any loss or damage, direct or indirect, arising from the sale, installation, or use of the BCI-GM31. Liability is limited to product replacement.

Agreement: The end user agrees to use this product in compliance with instructions, terms of use, and all State and Federal laws. PAC provides instructions and safety warnings but disclaims liability for any misuse. If you do not agree, return the product immediately. This product is intended for off-road and passenger use only.