2011 GMC Yukon Review

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Reading Lamps
Press the button near each lamp to turn them on or off. For more information, see: • Dome Lamps on page 6‑5. • Instrument Panel Illumination Control on page 6‑5. ...

Battery
The battery supplies power to start the engine and operate any additional electrical accessories. • To avoid break-down or failure to start the vehicle, maintain a battery with full cranking power. ...

Malfunction Indicator Lamp
A computer system called OBD II (On-Board Diagnostics-Second Generation) monitors the operation of the vehicle to ensure emissions are at acceptable levels, to produce a cleaner environment. This ligh ...