See also:

Heated and Ventilated Seats
Heated and Ventilated Seat Buttons Shown, Heated Seat Buttons Similar If available, the buttons are on the climate control panel. To operate, the ignition must be on. Press to heat the seat c ...

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 ...

Place a Call Using a Stored Number
1. Push . System responds: “OnStar ready.”. 2. Say “Call <name tag>.” System responds: “OK, calling <name tag>.” ...