Battery Power Protection

This feature helps prevent the battery from being drained, if the interior courtesy lamps or reading lamps are accidentally left on.

If any of these lamps are left on, they automatically turn off after 10 minutes, if the ignition is off.

The lamps will not come back on again until one of the following occurs:
• The ignition is turned on.
• The exterior lamps control is turned off, then on again.

The headlamps will time out after 10 minutes, if they are manually turned on while the ignition is on or off.

    See also:

    Leaving the Vehicle With the Engine Running
    WARNING It can be dangerous to leave the vehicle with the engine running. The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. If you have ...

    Interior
    The Sierra showcases two different interior designs. Work Truck and SLE models are more utility-minded, with large controls and door handles that can be operated while wearing gloves. The SLT offe ...

    Voice Recognition
    The voice recognition system uses commands to control the system and dial phone numbers. Noise: The system may not recognize voice commands if there is too much background noise. When to Speak: ...