PAC NU-GM4 Manual

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Pacic Accessory Corporation - Santa Ana, CA 92705

techsupport@pac-audio.com • Voice: 866-931-8021 • Fax: 714-835-3233 • www.pac-audio.com

11-15-11

NU-GM4

GM LAN 29-bit Navigation Unlock

InterfaceFor Select 2012 + Vehicles

The NU-GM4 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.

Page 1

Installation:

Disconnect the black 44-pin main harness from the back of the radio (see g. A) Plug the male connector on the NU-GM4

harness into the 44-pin port on the back of the radio. Connect the factory 44-pin harness into the female connector on the NU-GM4 harness.Plug

the Black micro-t 24-pin connector on the NU-GM4 harness into the NU-GM4.

Locate the vehicles VSS wire in pin 20 of the gray 20-pin plug on the back of the radio (see g. A & B). This wire will need to be cut then

connected as follows: The green/black wire from the NU-GM4 should be connected to the radio/plug side of the VSS wire and the green/white

wire from the NU-GM4 should be connected to the vehicle side of the VSS wire.

Main 44-pin Plug

Gray 20-pin Plug

Installation

Pin 20

1. You will need to locate the junction block underneath the driver dash to the

right of the kickpanel on the rewall (Fig A).

2. Remove the cover and locate the 8 pin gray plug in the top left corner of the

junction block (Fig B).

3. The reverse camera wire is the blue wire in pin 2 (Fig C)

4. Connect the red camera turn on wire from the NU-GM4 to this blue wire.

5. Verify that the reverse lights do not come on when the reverse camera

unlock feature is being used.

Fig A

Fig B Fig C

Reverse Camera Wire Location Avalanche/Suburban/Tahoe/Yukon

Pacic Accessory Corporation - Santa Ana, CA 92705

techsupport@pac-audio.com • Voice: 866-931-8021 • Fax: 714-835-3233 • www.pac-audio.com

11-15-11

Page 2

Reverse Camera Wire Location Silverado/Sierra

1. You will need to locate the BCM underneath the driver 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. Once you have located this wire, use a multimeter to verify that it measures 12v whenever the vehicle is put into reverse.

4. Once you have veried that this is the proper wire, connect the red camera turn on wire from the NU-GM4 to this green wire.

5. Verify that the reverse lights do not come on when the reverse camera unlock feature is being used.

**If you are having trouble locating the reverse wire or it is not in any of the locations specied, please call our technical support

department at 866-931-8021 for further assistance.

Press & hold to

enable/disable

Navigation Unlock

NU-GM4 Controls

1. Press & Hold the

Source Button

2. Information Center

Displays: Confirm

Safe Use

3. Press the Source

Button Again to

Confirm

4. Repeat Step 1

to De-Activate

Press Once to

Activate Reverse

Camera

Make Sure the Control

Lights Are O.

Activating the Reverse Camera

1. Turn o all

mirror controls

2. Enable Navigation

Unlock Through

the SWC

3. Press Down Once

to Enable Reverse

Camera

4. Repeat Step 3 to

De-Activate

Activating the Navigation Unlock

Press and hold the “Source” button on the steering wheel controls (SWC) for two seconds to activate the NU-GM4. You will hear one

chime and the driver information center on the instrument cluster will display “Conrm Safe Use”. Press the “Source” button on the SWC

again to acknowledge “safe use”, agreeing that use will be performed only by the passenger whenever the vehicle

is in motion, and activate the NU-GM4. To de-activate the NU-GM4 simply press and hold the “Source” button on the SWC until two

chimes are heard.

Activating the Reverse Camera Unlock

Activate the navigation unlock using the SWC. Make sure that both control lights on the rearview mirror controls on the driver 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.

WARNING: In order to avoid distraction, which could lead to an accident, the driver should never utilize systems unlocked

by the NU-GM4 when the vehicle is in motion. Even when operated by the passenger, the vehicle driver should maintain their

attention on the road at all times.

Operation

DISCLAIMER: Under no circumstances shall the manufacture or the distributors of the NU-GM4 be held liable for claims of any loss or damage,

consequential, direct or indirect, arising from the sale, installation, or use of the NU-GM4. The manufacture and its distributors will not, nor will they

authorize any representative or any other individual, to assume obligation or liability in relation to the NU-GM4 other than its replacement.

AGREEMENT: End user agrees to use this product in compliance with the instructions and terms of use above and with all State and Federal

laws. PAC provides instructions and safety warnings with respect to this product and disclaims all liability for any use not in conformity with those

instructions or other misuse of its product. If you do not agree, please discontinue use immediately and return product to place of purchase. This

product is intended for off-road use and passenger use only.