GMC AUX-GM3 GM CLASS II Instruction Manual

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AUX-GM3
QUICK START INSTALLATION GUIDE FOR GM CLASS II RADIOS WITH EXTERNAL CD CHANGER, XM TUNER OR RSE

PRODUCT SAFETY & DISCLAIMER
READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING, FAILURE TO DO SO MAY CAUSE
PERSONAL INJURY OR DAMAGE TO PRODUCT AND/OR PROPERTY
•This installation guide is provided as a GENERAL installation guide, some vehicles vary and
may require additional steps. We do not accept responsibility for third party labor charges
or modifications. Exercise due-diligence when installing this product.
•We do not accept any responsibility for vehicle damage or personal injury resulting from
the installation of this product.
•Careless installation and operation can result in equipment damage.
Requirements:
External cd changer, XM Tuner module or rSE
Introduction
Thousands of GM Cars, Trucks and SUV’s have either a remote/external CD
changer, XM tuner module (U2K option) OR RSE but lack aux input jacks for
Smartphone, iPod, MP3 player etc. Many of the available adapters require
disconnecting XM, remote CD changer*, DVD or all three; however, the AUX-GM3
auxiliary input jack, requires and retains these factory options to provides a
3.5mm input jack which can be used to connect and play all kinds of audio
devices including Smartphones, MP3 Players, iPods etc. Keep in mind for the
AUX-GM3 to work, the vehicle MUST have an XM Tuner module (U2K option)
or Remote/External CD changer or DVD player. (at least one of these
options must be present for the AUX-GM3 to work)
Warning: The 6-Disc changer built-into the AM/FM radio, is internal and not
considered separate or remote. Also, XM tuner module (U2K option) is a metal
box that is also not built-into the AM/FM radio.
See Frequently Asked question at the end of this guide for additional details.
Installation
Radio removal required. Vehicle specific radio removal instructions are not part
of this guide, but are available upon request
1. Locate and disconnect 12-pin plug from radio by pressing lock tab (See
Fig. 1)
Alert: If AM/FM radio 12-pin port is empty; vehicle does not have required
factory option for the AUX-GM3 to work. No need to proceed with install.
Fig. 1
2. Connect vehicle 12-pin plug (from step 1) to 12-pin connector on
harness (See Fig. 2)
Fig. 2
harness 12-pin connector

3. Connect harness 12-pin plug (See Fig. 3) into radio 12-pin connector
vacated in step 1
Fig. 3
12-pin plug
4. Carefully route audio jack (See Fig. 4) to a location on dash or nearby
where it will be mounted (within 4 ft.).
Fig. 4
5. Optional: Drill a ¼” hole in dash or panel. Push jack threated shaft
through hole and secure with nut (See Fig. 5)
Fig. 5
Warning: Jack may be left freestanding, but to mount, ensure panel is
no thicker than 1/8” otherwise shaft may not protrude enough to
engage with nut. If necessary, use dremel, sander etc. to thin panel,
Operation
1. Turn radio “ON”
2. Press “BAND” or “CD/AUX “button (depends on vehicle option)
If subscribed, most recent XM channel or if equipped with remote CD
changer, select track will play
3. Connect audio device to 3.5mm jack using included 3 ft. audio cable
(See Fig. 6) or similar
4. Press play on audio device. XM or CD Changer playback is interrupted.
Fig. 6
3.5mm Male-Male audio cable
5. Use radio volume button to set playback level.
Warning: Playlist and Track selection is *NOT* possible from the Radio.
You must use the audio devices built-in controls to access audio files .
6. To listen to XM, Remote (external) CD changer or DVD Player, simply
disconnect 3.5mm audio cable from jack and operate XM/ CD
changer/DVD as customary. (Jack must be empty)
7. If correct operation is confirmed go ahead and reinstall the GM radio

Frequent ask questions & troubleshooting
1. Does the AUX-GM3 work in vehicles with a 6-CD changer radio (the
changer is built-into radio)
YES; BUT vehicle MUST also have an External (remote) device (e.g., CD
changer or XM tuner) otherwise the AUX-GM3 will not work.
2. My GM radio has the option for a remote changer (CD/AUX button).
Does it have to be installed in vehicle before buying this cable?
YES; a working external CD changer or XM tuner must be installed in order
to use this product
3. My GM radio is XM ready (Band button); will the AUX-GM3 work?
NO;XM ready means the XM tuner module is not yet installed. Vehicle MUST
have an XM Tuner module, remote CD changer or RSE for the AUX-GM3 to
work.
4. What is an XM Tuner module? Is that built-into the AM/FM radio?
NO; XM module is not built-into the AM/FM radio, but a metal box installed in
a remote area of the vehicle and required for the AUX-GM3 to work.
5. Will I be able to use Speakerphone option on my smartphone?
Yes! When in a call enter speakerphone mode on smartphone at which point
you will hear the caller’s voice on car speakers.
6. My XM subscription has expired, will the AUX-GM3 still work?
YES; The AUX-GM3 will work because vehicle has required XM tuner module.
7. My XM subscription has expired but plan to review at a later date.
What playback option should I select?
Select “Subscribed” from option so to allow XM playback upon renewal.
Note: If expired version is selected, XM will not play upon reneval.
8. I’m not the original owner and don’t know if vehicle has XM Tuner. How
can I find out without ripping the car apart?
Turn radio “ON”, press the “BAND” button repeatedly as the radio cycle
through AM/FM/XM1/XM2. If only AM/FM is displayed, your vehicle does not
have an XM tuner module.
9. I have all three options (remote changer, XM and DVD); do I need to
disconnect anything for the AUX-GM3 to work
NO; the AUX-GM3 requires at least one factory option and all options remain
connected and functional, however, if XM is the only option in your vehicle
with expired subscription, but plans to subscribe at a later date, purchase
“Subscribed” version.
10. What is the difference between the AUX-GM3 and AUX-GM3X?
The only difference is where they connect to vehicle. The AUX-GM3 connects
to the radio in the dash, and the AUX-GM3X connects to the XM Tuner
module in remote area of the vehicle. (See plugs below)
** Any reference to External or remote CD changer are to those installed in lower dash, center
armrest, hatch, trunk etc. and not the 6-CD changer built-into AM/FM radio.
GM remote/external CD changer
Fig. 7
Disclaimer
• This product has no affiliation with GM
• We’re not liable for misuse of this product.
•Whenever possible professional installation is recommended.
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