OnStar Services
See also:
How to Check Automatic Transmission Fluid
Notice: Too much or too little fluid can damage the transmission. Too much can
mean that some of the fluid could come out and fall on hot engine parts or exhaust
system parts, starting a fire. Too ...
Vehicle Positioning
At times, the position of the vehicle on the map may be inaccurate due to one
or more of the following reasons:
Road system has changed.
Vehicle is driving on slippery road surfaces such as in ...
Manual Operation of Power Liftgate
To change the liftgate to manual
operation, turn the mode selector
switch to OFF.
With the power liftgate disabled
and all of the doors unlocked,
the liftgate can be manually opened
and clo ...






