Unable to Connect to OnStar Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push 
to try the
call again or try again after driving a
few miles into another cellular area.
See also:
Transmission
Automatic Transmission
P: Park
R: Reverse
N: Neutral
D: Drive
Manual Mode
Move the selector lever from D (Drive) to the left. Press the shift lever forward (+) to upshift or rearward (&# ...
Reporting Safety Defects to General Motors
In addition to notifying NHTSA
(or Transport Canada) in a situation
like this, please notify General
Motors.
Call 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
...
Automatic Transmission Operation
There are several different positions for your gear
shift lever.
PARK (P): This position locks the rear wheels.
It is the best position to use when you start the
engine because your vehicle ...