My security light keeps flashing. Never stops. Any idea what is wrong and Any idea how to make it stop?

Recently had rear transfer case & rear differential replaced or repaired on 2012 chevy equinox my awd, after the repair whenever I made a turn to start driving the rear wheels seemed to grind, or… 

Recently my backup camera system does not always work. I get a message that the system is not available and get a jumpy, staticy picture. When I googled the problem, it told me to tap the internal fon… 

Dash gauges traction control RPM gone crazy gas gauge to

Side view mirrors will not adjust in cold weather...once interior warms up, they will adjust...now with warmer weather, they will not adjust at all...any suggestions...?