See also:

Manual Operation
(Fan Control): Press these buttons to increase or decrease the fan speed. Pressing either fan button while in automatic control places the fan under manual control. The fan setting remains displayed ...

Reading Lamps
These lamps are located on the overhead console. These lamps come on automatically when any door is opened. For manual operation, press the button next to each lamp to turn it on or off. ...

Under the Hood
The Yukon Hybrid uses a two-mode hybrid system. The system augments the SUV's V-8 engine with two electric motors, both powered by a 300-volt battery pack. A cylinder-deactivation system cuts powe ...