Safety Belt Reminder Light
When the engine is started, a chime sounds for several seconds to remind a driver to fasten the safety belt, unless the driver safety belt is already buckled.

The safety belt light comes on and stays on for several seconds, then flashes for several more.
This chime and light are repeated if the driver remains unbuckled and the vehicle is in motion. If the driver safety belt is already buckled, neither the chime nor the light comes on.
See also:
How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions.
Push this red emergency button to get priority help from specially ...
OnStar Overview
If equipped, this vehicle has a
comprehensive, in-vehicle system
that can connect to a live Advisor
for Emergency, Security, Navigation,
Connection, and Diagnostic
Services.
The OnStar sy ...
COOLANT LEVEL LOW ADD
COOLANT
This message will display if the
coolant is low. See Engine Coolant. ...
