OnStar Services

See also:

Adding Coolant
If you need more coolant, add the proper DEX-COOL® coolant mixture at the coolant recovery tank. CAUTION: Turning the radiator pressure cap when the engine and radiator are hot can allow stea ...

Playing an MP3 CD-R or CD-RW Disc
The radio may have MP3 CD-R or CD-RW disc capability. For more information, see Using an MP3 later in this section. ...

Checking the Fluid Level
Prepare your vehicle as follows: 1. Park your vehicle on a level place. Keep the engine running. 2. With the parking brake applied, place the shift lever in PARK (P). 3. With your foot on the b ...