Service
Your dealer knows your vehicle best and wants you to be happy with it. We hope you will go to your dealer for all your service needs. You will get genuine GM parts and GM-trained and supported service people.
We hope you will want to keep your GM vehicle all GM. Genuine GM parts have one of these marks:

See also:
Power Door Locks
On vehicles with power door locks, the switches are
located on the front doors.
(Unlock): Press to unlock the
doors.
(Lock): Remove the key from the
ignition and press
to lock the doors. ...
Windows
The power window switches are located on the driver door. Each passenger door has a switch that controls only that window.
Press the switch to lower the window. Pull the front of the switch up to r ...
Selecting the XM Band
Press the RADIO/BAND or SRCE button to choose between AM, FM, and XM. The last
channel played in that band begins to play when that band is selected. ...
