Phone
See also:
OnStar Mobile App
With an iPhone® or
Android™-based mobile device,
an OnStar mobile app can be
downloaded. The vehicle can be
remote started, if equipped, or the
doors can be unlocked from
anywhere there is ...
Engine Cooling System Messages
Notice: If you drive the vehicle while the engine is overheating, severe engine
damage may occur. If an overheat warning appears on the instrument panel cluster
and/or DIC, stop the vehicle as soo ...
Add-on Electrical Equipment
The OnStar system is integrated
into the electrical architecture of the
vehicle. Do not add any electrical
equipment. See Add-On Electrical
Equipment. Added
electrical equipment may interfer ...






