Reactivation for Subsequent Owners
Push 
and follow the prompts to speak to an Advisor as soon as possible after acquiring the vehicle.
The Advisor will update vehicle records and will explain the OnStar service offers and options available.
See also:
End a Call
Push . System responds: “Call ended.” ...
Windshield Wiper/Washer
The windshield wiper/washer lever is located on the left side of the steering column.
Turn the band with the wiper symbol to control the windshield wipers.
(Mist): Use for a single wiping cycle.
...
Playing a CD (In Either the DVD or CD Slot)
Insert a CD partway into the slot, label side up. The player pulls it in and the CD should begin playing.
(Loading a disc into the system, depending on media type and format, ranges from five to 20 s ...