OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If a diagnostics check is needed between e-mails, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationWater Hose Test
Note: Use a water hose without the nozzle attached.
Have an assistant inside of the vehicle i 1. n order to locate the leak.
Begin testing at the base of the window or the windshield.
Slowly move the hose upward and across the top of the vehicle.
...
Replacing Airbag System Parts after a Crash
WARNING
A crash can damage the airbag systems in the vehicle.
A damaged airbag system may not work properly and may not protect you and your
passenger(s) in a crash, resulting in serious injury or even death. To help make
sure the airbag systems are working properly after a crash, have them in ...
Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise, commonly referred
to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible.
If hea ...