Place a Call Using a Stored Number
1. Push 
. System responds:
“OnStar ready.” 2. Say “Call <name tag>.” System responds: “OK, calling <name tag>.”
See also:
Engine Oil Pressure Light
WARNING
Do not keep driving if the oil pressure is low. The engine can become so hot that it catches fire.
Someone could be burned. Check the oil as soon as possible and have the vehicle serviced.
...
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position.
• The ignition should turn to LOCK/OFF only when the shift lever is in P (Park).
...
When to Check Power Steering Fluid
The power steering fluid does not need to be checked unless there is a leak in
the system or you hear an unusual noise. Have the system inspected and repaired
if there is a fluid loss. ...