Interface Features
- Provides accessory power (12-volt 10-amp)
- Retains R.A.P. (retained accessory power)
- Provides NAV outputs (parking brake, reverse, and speed sense)
- Retains chimes through an onboard speaker
- Pre-wired ASWC-1 harness (ASWC-1 sold separately)
- Designed for non-amplified models, analog amplified models, or when bypassing a factory amp
- Retains balance and fade
- Micro-B USB updatable
Interface Components
- AX-GMLAN29 interface
- AX-GMLAN29 harness
Applications
The AX-GMLAN29 is compatible with a range of GM vehicles from 2006-2017. Specific notes apply to vehicles with digital amplifier options.
| Make | Model | Year(s) |
|---|---|---|
| BUICK | Enclave | 2008-2017 |
| BUICK | Lucerne | 2006-2011 |
| CADILLAC | DTS † | 2006-2011 |
| CADILLAC | Escalade † | 2007-2014 |
| CADILLAC | SRX † | 2007-2009 |
| CHEVROLET | Avalanche *△ | 2007-2013 |
| CHEVROLET | Captiva Sport | 2012-2015 |
| CHEVROLET | Equinox | 2007-2009 |
| CHEVROLET | Express ‡ | 2008-2015 |
| CHEVROLET | Impala | 2006-2013 |
| CHEVROLET | Impala Limited | 2014-2016 |
| CHEVROLET (CONT) | Monte Carlo | 2006-2007 |
| CHEVROLET (CONT) | Silverado *△ (new body) | 2007-2013 |
| CHEVROLET (CONT) | Silverado 2500/3500 *△ | 2014 |
| CHEVROLET (CONT) | Suburban *△ | 2007-2014 |
| CHEVROLET (CONT) | Tahoe ** | 2007-2014 |
| CHEVROLET (CONT) | Traverse | 2009-2017 |
| GMC | Acadia | 2007-2016 |
| GMC | Acadia Limited | 2017 |
| GMC | Savana ‡ | 2008-2015 |
| GMC | Sierra * | 2007-2013 |
| GMC | Sierra 2500/3500 *△ | 2014 |
| GMC (CONT) | Yukon / | 2007-2014 |
| GMC (CONT) | Yukon XL ** | 2007-2014 |
| HUMMER | H2 † | 2008-2009 |
| PONTIAC | Torrent | 2007-2009 |
| SATURN | Outlook | 2007-2010 |
| SATURN | VUE | 2008-2010 |
| SUZUKI | XL-7 | 2007-2009 |
* These vehicles have a digital amp option. Please reference the “Service Parts Identification” sticker located in the glove box for the RPO code Y91. If Y91 is present, then the vehicle is equipped with a digital amplifier.
** These vehicles have a digital amp option. Please reference the “Service Parts Identification” sticker located in the glove box for the RPO code STZ or Y91. If STZ or Y91 is present, then the vehicle is equipped with a digital amplifier.
† These vehicles are standard for a digital amplifier.
‡ For 2013-2015, if the vehicle is equipped with OE navigation, use the AXADBXH-GM4.
▲ In 2012-Up, if the vehicle is equipped with OE navigation, use the AXADBXH-GM4.
Tools Required
- Wire cutter
- Crimp tool
- Solder gun
- Tape
- Connectors (e.g., butt-connectors, bell caps)
Connections to be Made
From the AX-GMLAN29 harness to the aftermarket radio:
- Connect the Black wire to the ground wire.
- Connect the Yellow wire to the battery wire.
- Connect the Red wire to the accessory wire.
- Connect the Blue wire to the amp turn-on wire.
- If the aftermarket radio has an illumination wire, connect the Orange wire to it.
- Connect the Gray wire to the right front positive speaker output.
- Connect the Gray/Black wire to the right front negative speaker output.
- Connect the White wire to the left front positive speaker output.
- Connect the White/Black wire to the left front negative speaker output.
- Connect the Green wire to the left rear positive speaker output.
- Connect the Green/Black wire to the left rear negative speaker output.
- Connect the Purple wire to the right rear positive speaker output.
- Connect the Purple/Black wire to the right rear negative speaker output.
For multimedia/navigation radios (requires specific wires):
- Connect the Blue/Pink wire to the VSS/speed sense wire.
- Connect the Green/Purple wire to the reverse wire.
- Connect the Light Green wire to the parking brake wire.
12-pin pre-wired ASWC-1 harness:
This harness is used with the optional ASWC-1 (sold separately) to retain steering wheel audio controls. If the ASWC-1 is not being used, disregard this harness. If it will be used, refer to the ASWC-1 instructions for radio connections and programming. Note: Disregard the harness that comes with the ASWC-1.
Installing the AX-GMLAN29
With the key in the off position:
- Connect the AX-GMLAN29 harness into the interface, and then to the wiring harness in the vehicle.
Note: If using the ASWC-1, connect it after you initialize and test the AX-GMLAN29, with the key in the off position.
Initializing the AX-GMLAN29
Attention! If the interface loses power for any reason, the following steps will need to be performed again. Also, if installing an ASWC-1, connect it after you initialize and test the interface/radio, with the key in the off position.
- Turn the key (or push-to-start button) to the ignition position and wait until the radio comes on.
Note: If the radio does not come on within 60 seconds, turn the key to the off position, disconnect the interface, check all connections, reconnect the interface, and then try again.
- Turn the key to the off position, and then to the accessory position. Test all functions of the installation for proper operation, before reassembling the dash.
Important Information & Support
IMPORTANT: If you are having difficulties with the installation of this product, please call our Tech Support line at 1-800-253-TECH. Before doing so, look over the instructions a second time, and make sure the installation was performed exactly as the instructions are stated. Please have the vehicle apart and ready to perform troubleshooting steps before calling.
Installer Education
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.
Metra recommends MECP certified technicians.
