14682 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REROUTE AND SECURE THE ONSTAR CABLE AWAY FROM THE HVAC MODE DOOR, AND IF NECESSARY, REPLACE THE HVAC MODE ACTUATOR ON CERTAIN VEHICLES EQUIPPED WITH FRONT ELECTRONIC CONTROL HVAC SYSTEM (C67/C68). THE ROUTING OF THE ONSTAR CABLE HAS THE POTENTIAL TO INTERFERE WITH THE TRAVEL ACTUATION OF THE MODE DOOR CAM. THIS MAY CAUSE A CLICKING NOISE UNDER THE INSTRUMENT PANEL WHEN SWITCHING HVAC MODES OR THE SYSTEM MAY NOT OPERATE AS EXPECTED.
