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 the
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and an
Advisor can run a check.
See also:
Playing a CD or MP3 CD (Radio with CD and Touchscreen)
Press the TUNE/MENU knob to display the CD Menu.
Shuffle: Select to play the tracks randomly rather than in sequence. Select again
to stop shuffle.
A checkmark indicates shuffle is on. Track List: ...
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter to release
loose dust and dirt. If the filter
remains covered with dirt, a new
filter is re ...
Heated Seats
Your vehicle may have
heated front seats.
The buttons used to
control this feature are
located on the front
door armrests.
The engine must be
running for the heated
seat feature to work. ...