See also:

Fast Idle System
If the vehicle has this feature it is available only with cruise control. The manual fast idle switch is operated using the cruise control buttons located on the left hand side of the steering wheel. ...

Turning the System On and Off
The system can be disabled through the Driver Information Center (DIC). See “Park Assist” under Vehicle Personalization (With DIC Buttons) on page 5‑46 for more information. URPA defaults ...

Filling the Tank
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. WARNING Fuel vapor burns violently and a fuel fire can cause bad injuries. To help avoid injuries to you ...