This Preliminary Information communication provides information to the technician that some customer may...

Bulletin number

PIC5905

Component

Electrical system

Summary

This Preliminary Information communication provides information to the technician that some customer may report that when they call the OnStar call center or use OnStar hands free calling that the person on the other side of the call has a hard time understanding them. Technician should not replace the microphone for this concern. Technician will need to use Global Diagnostic System 2 and check the OnStar® Customer Identifier if it is less than 86000000 then the module should be replaced for this concern.

Owners of these vehicles have filed 221 complaints in the electrical category.