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IMPORTANT: Before starting the programming process you must
first cut pin 5 in the 20 pin harness, unless your vehicle is a Buick
Rendezvous or Terraza. Pin 5 is located on the bottom row of the
20 pin connector. Start at the yellow wire on the bottom row and
count five wires while moving left.
1.
Open the driver's door, and keep
open during the programming
process. Turn the ignition on.
2.
Connect the LD-GM11 harness to the interface, and then to the wiring harness in
the vehicle.
3.
Locate the Volume Up button on the steering wheel. Program the interface by pressing
Volume Up
and holding the Volume Up button until the LED stops flashing.
VOL
+
4.
The LED will flash Green & Red while the interface programs the radio to the steering
wheel controls. Once programmed, the LED will go out, then produce a pattern which will
identify the radio type installed.
Green & Red LED
Green or Red LED
PROGRAMMING (HOLD)
20
11
10
1
X X
Cut Pin #5
Yellow
Black
Yellow
5
The LED will go out, then once again quickly flash Green & Red while the interface
programs itself to the vehicle. Once programmed, the LED will go out again, then turn
solid Green.
Green & Red LED
Green LED
6.
Press the following buttons on the steering wheel in the exact sequence shown. For each
Press:
Vol Up, Seek Up,
button pressed, the LED will turn off momentarily then back on. If a button is not
Vol Up, PTT/Mute,
present, press Volume Up to skip that button. The LED will turn solid Green after the last
Vol Up
button has been pressed.
• Volume Up • Seek Up • Volume Up • PTT (OnStar) or MUTE • Volume Up
7.
Turn the ignition off, then back on.
8.
Test all functions of the installation for proper operation.
If the interface fails to function, press and release the reset button. The reset
button can be found to the right of the 20 pin connector inside the green plastic
housing. Using a small pointed tool press the blue button for 2 seconds and
release. The LED will start flashing green and red, immediately proceed to step 3.
Reset Button
Reset
LED
Button
3
REV. 8/17/21 GM11-SWC/GM1
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