Entry Lighting
For vehicles with courtesy lamps, they come on and stay on for a set time whenever 
is pressed on the Remote Keyless Entry (RKE) transmitter.
If a door is opened, the lamps stay on while it is open and then turn off automatically about 20 seconds after the door is closed. If is pressed and no door is opened, the lamps turn off after about 20 seconds.
Entry lighting includes a feature called theater dimming. With theater dimming, the lamps do not turn off at the end of the delay time.
Instead, they slowly dim and then go out. The delay time is canceled if the ignition key is turned to ON/RUN or the power door lock switch is pressed. The lamps will dim right away.
When the ignition is on, illuminated entry is inactive, which means the courtesy lamps will not come on unless a door is opened.
See also:
Turn Signal Indicator
The vehicle may also have a turn signal indicator on the mirror. An arrow on the mirror flashes in the direction of the turn or lane change. ...
Four Way Power Driver Seat
A. Seat Position Handle
B. Height Adjustment Control
To adjust a power seat, if equipped:
○ Move the seat forward or rearward using the handle under the front of the seat
cushion (A). See ...
Reporting Safety Defects to the Canadian Government
If you live in Canada, and you believe that the vehicle has a safety defect, notify Transport Canada immediately, and notify General Motors of Canada Limited. Call Transport Canada at 1-800-333-0510 o ...