Programming The Ax-Gmlan29-Swc; Adjusting The Ax-Gmlan29-Swc - Axxess AX-GMLAN29-SWC Installation Manual

PROGRAMMING THE AX-GMLAN29-SWC

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.
• Start the vehicle.
• Connect the AX-GMLAN29-SWC harness to the wiring harness in the vehicle.
• The L.E.D. will initially turn on solid Green, then turn off for a few seconds while it auto
detects the radio installed.
• The L.E.D. will then flash Red up to (18) times indicating which radio is connected to the interface,
and then turn off for a couple of seconds. Pay close attention to how many Red flashes there
are. This will help in troubleshooting, if need be. Refer to the L.E.D. feedback section for more
information.
• After a couple seconds the L.E.D. will turn on solid Red while the interface auto detects
the vehicle. The radio will shut off at this point. This process should take 5 to 30 seconds.
• Once the vehicle has been auto detected by the interface, the L.E.D. will turn on solid
Green, and the radio will come back on, indicating programming was successful.
• Test all functions of the installation for proper operation, before reassembling the dash. If
the interface fails to function, refer to Resetting the AX-GMLAN29-SWC.
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.

ADJUSTING THE AX-GMLAN29-SWC

Audio level adjustment (digital amplified models only):
• With the vehicle and radio turned on, turn the volume up 3/4 of the way.
• With a small flat-blade screwdriver, adjust the potentiometer clockwise to raise the audio
level; counterclockwise to lower the audio level.
• Once at a desired level, audio level adjustment is complete.
Chime level adjustment (digital amplified models only):
• With the vehicle on, turn it off and leave the keys in ignition. Open the driver's door; chimes
will be heard.
• Wait 10 seconds, and then with a small screwdriver, turn the potentiometer clockwise to
raise the chime level; counterclockwise to lower the chime level.
• When the chime is at a desired level, remove the keys from the ignition. This will lock the
chime volume at its current level.
OnStar Level Adjustment
• Press the OnStar button to activate it.
• While OnStar is speaking, press the VOLUME UP or VOLUME DOWN button on the steering
wheel to raise or lower the OnStar level.
• If the vehicle does not come equipped with steering wheel controls, locate the Black/Yellow
wire on the AX-GMLAN29-SWC harness.
• While OnStar is speaking, tap the Black/Yellow wire to ground. Once the OnStar level is set,
it will stay at that level until the Black/Yellow wire is tapped to ground again.
REV. 1/5/2018 INSTAX-GMLAN29-SWC
7