Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
What to Use
WARNING!
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warn ...
Manual Liftgate
For vehicles without keyless access, unlock the vehicle before opening the
liftgate.
Press the touch pad located in the handle of the liftgate, above the license
plate, and lift up to open.
Do ...
Destination
Press DEST to access the Destination Entry screen. From this screen, you can
select from several options to plan a route by entering destination points.
To enter a destination, choose from one of ...






