In the older models the rear defrost cables would become disconnected/break off all the time(poor design). Since 2015 or so I have not seen that issue and assume GM fixed the problem, but hard to break myself of the habit of mentioning the ones thay are good.
Never seen rear defrost cables before so does that mean mean if the rear defrost cables are disconnected the rear window will not defrost?
In the older models the rear defrost cables would become disconnected/break off all the time(poor design). Since 2015 or so I have not seen that issue and assume GM fixed the problem, but hard to break myself of the habit of mentioning the ones thay are good.