Windows

WARNING
Leaving children, helpless adults, or pets in a vehicle with the windows closed is dangerous. They can be overcome by the extreme heat and suffer permanent injuries or even death from heat stroke.
Never leave a child, a helpless adult, or a pet alone in a vehicle, especially with the windows closed in warm or hot weather.

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The vehicle aerodynamics are designed to improve fuel economy performance. This may result in a pulsing sound when a window is partially open. To reduce the sound, open another window or the sunroof (if equipped).

See also:

Removing the Flat Tire and Installing the Spare Tire
1. Do a safety check before proceeding. See If a Tire Goes Flat 2. Use the wrench to loosen all of the wheel nuts. Do not remove them yet. 3. Find the jacking location using the diagra ...

Clock
The analog clock is not connected with any other vehicle system and runs by itself. To adjust the clock, do the following: 1. Locate the adjustment button, near the lower left corner of the clock. ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...