See also:

Using the Digit Store Command
The digit store command allows a phone number to be stored by entering the digits individually. 1. Press . ► For vehicles without a navigation system, the system responds “Ready,” followe ...

OIL PRESSURE LOW — STOP ENGINE
This message displays if low oil pressure levels occur. Stop the vehicle as soon as safely possible and do not operate it until the cause of the low oil pressure has been corrected. Check th ...

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 ...