Diagnostics
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, push
, and an Advisor can run a check.
See also:
Removing the Spare Tire and Tools
To access the spare tire and tools:
1. Open the trunk. See Trunk .
2. Lift the load floor.
A. Retainer Nut
B. Tool Bag Tether
C. Tool Bag
D. Spare Tire
3. Turn the retainer nut (A) counter ...
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and
displays the CHANGE ENGINE OIL SOON message when it is time to change the engine
oil and filter. The oil life system ...
Automatic Dimming Rearview Mirrorwith Compass
Your vehicle may have an automatic-dimming
rearview mirror with a compass.
(On/Off): This is the
on/off button for the
automatic dimming feature and compass. ...