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Buick TSB #PIC5910C
2015 Buick LaCrosse
Affected Component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B124B sym 04 in the HMI module. Technician should check the USB port operations if no issue found it should be considered a false code and no components should be replaced. If the USB port is inoperative technician should follow published Service Information diagnosis for Auxiliary Audio Input Malfunction.
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