OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationSafety Locks
The vehicle has rear door safety locks on each rear door that prevent passengers
from opening the rear doors from the inside.
Using the Rear Door Safety Lock
Move the lever up to lock.
Close the door.
Repeat Steps 1 and 2 for the other rear door lock.
Caution
Pulling the inside do ...
Brake Assist
The Brake Assist feature is designed to assist the driver in stopping or decreasing
vehicle speed in emergency driving conditions. This feature uses the stability system
hydraulic brake control module to supplement the power brake system under conditions
where the driver has quickly and forcef ...
Driving on Wet Roads
Rain and wet roads can reduce vehicle traction and affect your ability to stop
and accelerate.
Always drive slower in these types of driving conditions and avoid driving through
large puddles and deep-standing or flowing water.
Warning
Wet brakes can cause crashes.
They might not work as wel ...