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.
The vehicle aerodynamics are designed to improve fuel economy performance. This may result in a pulsing sound when either rear window is down and the front windows are up. To reduce the sound, open either a front window or the sunroof (if equipped).
See also:
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
Interior Care
To prevent dirt particle abrasions, regularly clean the vehicle's interior. Immediately
remove any soils. Note that newspapers or dark garments that can transfer color
to home furnishings can ...
Rear Seat Audio (RSA) System
For vehicles with Rear Seat Audio (RSA), rear seat passengers can listen to and control any of the music sources: radio, CDs, DVDs, or other auxiliary sources. The rear seat passengers can only contro ...