Manuals+

AXXESS AXDIS-GMLN29

GM Data Interface with SWC 2006-Up

Installation Instructions

Interface Components

Interface Features

Tools Required

Applications

This interface is compatible with the following vehicles:

BUICK

CADILLAC

CHEVROLET

CHEVROLET (CONT)

GMC

HUMMER

PONTIAC

SATURN

SUZUKI

Notes on Amplifiers:

Connections

⚠️ Attention! This interface will work with models that are either non-amplified, analog amplified, or digital amplified. Please follow the instructions carefully for your model vehicle. Failure to do so will result in either no sound, or low sound. If you are unsure if your vehicle is factory amplified or not, please contact your local dealership.

For models without an amplifier:

From the 16-pin harness with stripped leads to the aftermarket radio:

The following (3) wires are only for multimedia/navigation radios that require these wires:

Tape off and disregard the following (4) wires; they will not be used in this application: Green, Green/Black, Purple, and Purple/Black.

From the AXDIS-GMLN29 harness to the aftermarket radio:

Note: The 4-pin to 4-pin resistor pad harness will not be used in this application.

Note: The relay attached to the AXDIS-GMLN29 harness is only for audible turn signal clicks. No extra steps are required to retain this feature, so leave the relay as-is.

For models with an analog amplifier:

From the 16-pin harness with stripped leads to the aftermarket radio:

The following (3) wires are only for multimedia/navigation radios that require these wires:

Tape off and disregard the following (4) wires; they will not be used in this application: Green, Green/Black, Purple, Purple/Black.

From the AXDIS-GMLN29 harness to the aftermarket radio:

The Black/Yellow wire is used for OnStar level adjustment for models that do not come equipped with steering wheel controls. Refer to the OnStar level Adjustment section for further instructions.

Note: The relay attached to the AXDIS-GMLN29 harness is only for audible turn signal clicks. No extra steps are required to retain this feature, so leave the relay as-is.

For models with a digital amplifier:

From the 16-pin harness with stripped leads to the aftermarket radio:

The following (3) wires are only for multimedia/navigation radios that require these wires:

From the AXDIS-GMLN29 harness to the aftermarket radio:

Note: The 4-pin to 4-pin resistor pad harness will not be used in this application.

Note: The relay attached to the AXDIS-GMLN29 harness is only for audible turn signal clicks. No extra steps are required to retain this feature, so leave the relay as-is.

3.5mm Jack Steering Wheel Control Retention

Backup Camera and RSE Harness (if applicable)

Installation

With the key in the off position:

⚠️ Attention! Do not connect the AXDIS-GMLN29 harness to the wiring harness in the vehicle just yet.

⚠️ Attention! If retaining steering wheel controls, ensure that the jack/wire is connected to the radio before proceeding. If this step is skipped, the interface will need to be reset for the steering wheel controls to function.

Programming

For the steps below, the L.E.D. located inside the interface can only be seen while active. The interface does not need to be opened to see the L.E.D.

Note: The L.E.D. will turn on solid Green for a moment, and then turn off under normal operation after the key has been cycled.

Adjustments

Audio level adjustment (digital amplified models only):

Chime level adjustment:

OnStar level adjustment:

Extra Features

AUX-IN, RSE and SAT:

Notes when retaining AUX-IN:

Functions of steering wheel control buttons while accessing advanced features:

Advanced menu options:

Steering Wheel Control Settings

L.E.D. feedback

The (18) Red L.E.D. flashes represent what brand radio the AXDIS-GMLN29 believes it is connected to. Each flash represents a different radio manufacturer. For example, if you are installing a JVC radio, the AXDIS-GMLN29 will flash (5) times. Following is a legend that dictates which manufacturer corresponds to which flash.

L.E.D. feedback legend

Note: If the AXDIS-GMLN29 flashes Red (7) times, and you do not have an Alpine radio connected to it, that means the AXDIS-GMLN29 does not detect a radio connected it. Verify that the 3.5mm jack is connected to the correct steering wheel jack/wire in the radio.

Note: Part number AXSWCH-PAR is required (sold separately). Also, the Parrot radio must be updated to rev. 2.1.4 or higher through www.parrot.com.

Note: If you have a Clarion radio and the steering wheel controls do not work, change the radio type to the other Clarion radio type; same for Eclipse. The following section explains how to do this.

Note: If you have a Kenwood radio and the L.E.D. feedback comes back as showing as a JVC radio, change the radio type to a Kenwood. The following section explains how to do this.

Attention:

The Axxess Updater App can also be used to program the following (3) sub-sections as well, pending that the interface has been initialized and programmed.

Changing radio type

If the LED flashes do not match the radio you have connected, you must manually program the AXDIS-GMLN29 to tell it what radio it is connected to.

  1. After (3) seconds of turning the key on, press and hold the Volume-Down button on the steering wheel until the L.E.D. in the AXDIS-GMLN29 goes solid.
  2. Release the Volume-Down button; the L.E.D. will go out indicating we are now in Changing Radio Type mode.
  3. Refer to the Radio Legend to know which radio number you would like to have programmed.
  4. Press and hold the Volume-Up button until the L.E.D. goes solid, and then release. Repeat this step for the desired radio number you have selected.
  5. Once the desired radio number has been selected, press and hold the Volume-Down button on the steering wheel until the L.E.D. goes solid. The L.E.D. will remain on for about (3) seconds while it stores the new radio information.
  6. Once the L.E.D. goes off, the Changing Radio Type mode will then end. You can now test the steering control wheel controls.

Note: If at any time the user fails to press any button for a period longer than (10) seconds, this process will abort.

Remapping the steering wheel control buttons

Let's say you have AXDIS-GMLN29 initialized and you want to change the button assignment for the steering wheel control buttons. For example, you would like Seek-Up to become Mute. Follow the steps below to remap the steering wheel control buttons:

  1. Ensure the AXDIS-GMLN29 is visible so you can see the L.E.D. flashes to confirm button recognition.
  2. Within the first twenty seconds of turning the ignition on, press and hold the Volume-Up button on the steering wheel until the L.E.D. goes solid.
  3. Release the Volume-Up button, the L.E.D. will then go out; The Volume-Up button has now been programmed.
  4. Follow the list in the Button Assignment Legend to reference the order in which the steering wheel control buttons need to be programmed.
  5. To complete the remapping process, press and hold the Volume-Up button on the steering wheel until the L.E.D. in the AXDIS-GMLN29 goes out.

Tip: Turning the radio off is recommended.

Note: If the next function on the list is not on the steering wheel, press the Volume-Up button for (1) second until the L.E.D. comes on, and then release the Volume-Up button. This will tell the AXDIS-GMLN29 that this function is not available and it will move on to the next function.

Button assignment legend

* Not applicable in this application

Note: Not all radios will have all of these commands. Please refer to the manual provided with the radio, or contact the radio manufacturer for specific commands recognized by that particular radio.

Dual assignment instructions (long button press)

The AXDIS-GMLN29 has the capability to assign (2) functions to a single button, except Volume-Up and Volume-Down. Follow the steps below to program the button(s) to your liking.

Note: Seek-Up and Seek-Down come pre-programmed as Preset-Up and Preset-Down for a long button press.

  1. Turn on the ignition but do not start the vehicle.
  2. Press and hold down the steering wheel control button that you want to assign a long press function to for about (10) seconds, or until the L.E.D. flashes rapidly. At this point release the button; the L.E.D. will then go solid.
  3. Press and release the Volume-Up button the number of times corresponding to the new button number selected. Refer to the Dual Assignment Legend. The L.E.D. will flash rapidly while the Volume-Up button is being pressed, and then go back to a solid L.E.D. once released. Go to the next step once the Volume-Up button has been pressed the desired number of times.
  4. To store the long press button in memory, press the button that you assigned a long press button to (the button held down in Step 2). The L.E.D. will now go off indicating the new information has been stored.

Caution: If more than (10) seconds elapses between pressing the Volume-Up button, this procedure will abort, and the L.E.D. will go out.

Note: These steps must be repeated for each button you would like to assign a dual purpose feature to. To reset a button back to its default state, repeat Step 1, and then press the Volume-Down button. The L.E.D. will go out, and the long press mapping for that button will be erased.

Dual assignment legend

* Not applicable in this application

Troubleshooting

Resetting the AXDIS-GMLN29

Product Information & Support

Having difficulties? We're here to help.

? Contact our Tech Support line at: 386-257-1187

✉️ Or via email at: techsupport@metra-autosound.com

Tech Support Hours (Eastern Standard Time)

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KNOWLEDGE IS POWER

Enhance your installation and fabrication skills by enrolling in the most recognized and respected mobile electronics school in our industry. Log onto www.installerinstitute.com or call 800-354-6782 for more information and take steps toward a better tomorrow.

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