7
REV. 8/6/2020 INSTAXDIS-GMLN29
PROGRAMMING
ADJUSTMENTS
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 AXDIS-GMLN29 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 AXDIS-GMLN29.
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.
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:
• 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 AXDIS-GMLN29 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.
