Retained Accessory Power (RAP)
These vehicle accessories can be used for up to 10 minutes after the engine is turned off:
○ Audio System
○ Power Windows
○ Sunroof (if equipped)
Power to the audio system will continue to operate for up to 10 minutes or until the driver door is opened.
Power to the power windows and sunroof will continue to operate for up to 10 minutes or until any door is opened.
All these features will work when the key is in ON/RUN or ACC/ ACCESSORY.
See also:
Hill and Mountain Roads
Driving on steep hills or through mountains is different than driving on flat
or rolling terrain. Tips for driving in these conditions include:
○ Keep the vehicle serviced and in good shape.
...
Engine Hour Meter Display
The Driver Information Center (DIC) can also display the number of hours the engine has run. To display the engine hours, turn the ignition off, then press and hold the reset button for at least four ...
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 ...





