GMC AUX-GM3X Instruction Manual

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AUX-GM3X
QUICK START INSTALLATION GUIDE FOR GM CLASS II RADIOS WITH XM TUNER

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:
XM Tuner module (*(U2K RPO)
Introduction
Thousands of GM cars, trucks and SUVs include an XM module (U2K option) but
lack aux input jacks for Smartphone, iPod, MP3 player etc. See; GM installed an
XM module (Not built into AM/FM radio) in many vehicles and even though the
one-year free introductory offer may have expired, the XM module remains and
this is great news for anyone looking to add an AUX. The AUX-GM3x cable uses
the XM port to provide an input for all kinds of audio devices including
Smartphones, MP3 players, iPods etc. and is also able to retain XM playback (if
subscribed). Be mindful that your vehicle MUST have an XM module (with or
without subscription). XM module is a small electronic box (See Fig. 2)
installed in a remote area of vehicle and not built-into AM/FM radio.
Warning: XM tuner module is not part of, or built-into the AM/FM radio. It is a
separate “metal box” in remote areas (e.g., under glovebox, rear side panels, trunk
etc.) See table at the end of this guide for possible XM module location in your
vehicle.
See Frequently Asked question at the end of this guide for additional details.
Installation—to XM module.
Warning: The AUX-GM3x connects at the XM module in remote location. It does
not fit or connect to the AM/FM radio in the dash. See our AUX-GM3
1. Locate XM module (See chart at the end of this guide for possible
location)
2. Disconnect 16-pin plug from XM module (See Fig. 2). Pull on blue
locking tab (See Fig. 3), press and hold black release tab, slide plug
from tuner socket. Warning: Image in Fig. 1 is NOT the 16-pin XM
plug.
Fig. 1
Fig. 2

1. Connect factory XM 16-pin plug (See Fig. 3) to harness 16-pin socket
(See Fig. 4)
Fig. 3
16-pin plug
Fig. 4
16-pin connector
2. Connect harness 16-pin plug (See Fig. 3) to XM module 16-pin socket
vacated in step 1
3. Carefully route audio jack (See Fig. 5) to location on dash or nearby
panel where it will be mounted (within 4, 6 or 10 ft.) final location will
vary based on vehicle and customer’s preference.
Active subscription
Expired subscription
Fig. 5
4. Optional: Drill a 9/64”or 5/32”hole in dash or panel, push audio jack
shaft through and secure with nut (See Fig. 6)
Fig. 6
Warning: Jack may be left freestanding, but to be mounted, ensure
panel is less than 4mm thick otherwise shaft may not protrude
enough to engage with nut. If necessary, use dremel, sander etc. to thin
panel or choose alternate mounting location.

Operation
1. Turn ignition and radio “ON”
2. Press “BAND” button until XM1 or XM2 is displayed
3. Connect audio device to 3.5mm jack using included 3 ft. audio cable or
similar (See Fig. 7)
4. Put audio device in play mode and ensure volume is at 80% or higher
Fig. 7
3.5mm Male audio cable
5. Use radio volume control button to set playback level. If distortion is
heard lower volume on audio device.
Warning: Playlist and Track selection is *NOT* possible from radio
buttons. Use audio devices built-in controls to access and control audio
files and selection
6. To listen to XM simply disconnect 3.5mm audio cable from audio jack
and operate XM as customary
7. If correct operation is confirmed go ahead and reinstall panels
surrounding the XM module.
Alert: Audio plug must be removed from audio jack. Audio jack (See
Fig. 6) must be empty otherwise XM playback is impaired.
Frequent ask questions & troubleshooting
1. Where is the XM module located?
See table on next page for possible XM module location.
2. Does the AUX-GM3x work in all GM Class-II vehicles?
YES; so long vehicle has an XM module with or without subscription.
3. Will I be able to use smartphone speakerphone feature?
Use smartphone speakerphone mode to hear callers voice on car speaker.
This option is limited by smartphone not this cable.
4. My vehicle does not have an XM module, how can I connect/play my
portable device?
At present we have no offering for vehicles without XM module
5. Which cable length should I select from options?
Measure distance between XM module and location where you intend to
place 1/8” audio jack, then select from available options in drop-down menu.
6. What’s the difference between Expired and Active? Which do I select?
If subscription has expired with NO plans to renew, purchase “Expired”
If subscription has expired with plans to renew at future date, select
“Active”
Important: Expired version will not allow XM playback at any time,
therefore to retain XM playback (now or in the future), purchase “Active”
version.
7. I don’t know if vehicle has XM module. How can I find out without
ripping car apart?
Turn radio “ON”, press “BAND” button repeatedly to cycle through
AM/FM/XM1/XM2. If only AM, FM is displayed, vehicle does not have
required XM module and therefore not compatible with this part.
8. My factory radio has a “BAND” button but no XM module. Will this work?
NO; For the AUX-GM3x to work, vehicle must have an XM module.
9. Do you offer a music streaming option for my GM with XM module?
YES, See our A2D-GM3x
10. After connecting everything, playback is noisy/humming. Any ideas?
Ensure audio device volume is set to 80% or more. When listening to XM (if
subscribed) ensure audio jack is empty.

Make
Model
XM Tuner Location
Buick
Allure
Left Rear Q-Panel
Enclave
Right Rear Q-Panel
LaCrosse
Behind Rear-Left Q-Panel (Trunk)
LeSabre
Left Rear Q-Panel
Lucerne
Left Rear Trunk
Rainier
Above Pass-side dash Panel
Rendezvous
Behind Glovebox
Terraza
Above steering column
Cadillac
CTS
Rear Shelf (Deck) Left Side
DTS
Left-Rear (Trunk)
Deville
Behind Rear Seat/Left Q-Panel
Escalade (EXT/ESV)
Behind Glovebox
SRX
Behind Rear Right Q-Panel
XLR
Between Seats
Chevrolet
Avalanche
Behind Glovebox
Cavalier
Rear Shelf (Deck) center
Colorado
Behind Glovebox
Corvette Coupe
Rear Left Q-Panel (above wheel well)
Corvette Convertible
Between Seats inside hatch cover
Equinox
Left Rear Q-Panel
HHR
Rear Right Q-Panel
Impala
Right Rear Q-Panel
Malibu
Under Shelf (deck) left Side
Monte Carlo
Behind Rear Left Q-Panel
Silverado
Behind Glovebox
Suburban
Behind Glovebox
Tahoe
Behind Glovebox
Trailblazer
Behind Glovebox
Uplander
Above Steering Column
Venture
Above Steering Column
GMC
Acadia
Rear Right Q-Panel
Canyon
Behind Glovebox
Denali/XL
Behind Glovebox
Envoy
Behind Glovebox
Sierra
Behind Glovebox
Yukon/Denali
Behind Glovebox
Hummer
H2
Behind Glovebox
H3
Behind Glovebox
Isuzu
Ascender
Behind Glovebox
Oldsmobile
Alero
Right Front Passenger compartment
Bravada
Behind Glovebox
Silhouette
Above Steering Column
Pontiac
Aztek
Behind Glovebox
Bonneville
Left Rear Q-Panel
Grand AM
Left Rear Q-Panel
Grand Prix
Right Front Passenger Compartment
G6
Rear (Trunk)
G8
Rear (Trunk)
Montana
Above Steering Column
Sunfire
Rear Deck (center)
Vibe
Right Rear Q-Panel
Saab
9-7x
Under Glovebox panel
Saturn
Relay
Above Steering Column
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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