Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Cellular and GPS Antennas
Avoid placing items over or near the
antenna to prevent blocking cellular
and GPS signal reception. Cellular
reception is required for OnStar to
send remote signals to the vehicle. ...
Finding a Program Type (PTY) Station(RDS and XM™)
To select and find a desired PTY perform the
following:
1. Turn the P-TYPE knob to select a PTY.
2. Once the desired PTY displays, press the
SEEK TYPE button to select and go to the
PTY’s fir ...
Anti-Lock Brake SystemWarning Light
With the Anti-Lock
Brake System (ABS),
this light will come
on when you start your
engine and may
stay on for several
seconds, that is normal.
A chime may also sound when the light comes on ...