Hummer 2008 H2 - Manual (Page 166)

The exterior lamps control has four positions:
O (Off): Turn the control to this position to turn off the
automatic headlamps and daytime running lamps (DRL).
Turning the headlamp control to the off position again will
turn the automatic headlamps or DRL back on.
For vehicles first sold in Canada, the off position will
only work for vehicles that are shifted into the PARK (P)
position.
AUTO (Automatic): Turn the control to this position
to automatically turn on the headlamps at normal
brightness, together with the following:
• Parking Lamps
• Instrument Panel Lights
• Taillamps
• License Plate Lamps
; (Parking Lamps): Turn the control to this position to
turn on the parking lamps together with the following:
• Instrument Panel Lights
• Taillamps
• License Plate Lamps
2 (Headlamps): Turn the control to this position to
turn on the headlamps together with the following lamps
listed below.
• Parking Lamps
• Instrument Panel Lights
• Taillamps
• License Plate Lamps
When the headlamps are turned on while the ignition is
on, the headlamps turn off automatically 10 minutes
after the ignition is turned off. When the headlamps are
turned on while the ignition is off, the headlamps will
stay on for 10 minutes before automatically turning off
to prevent the battery from being drained. Turn the
headlamp control to off and then back to the headlamp
on position to make the headlamps stay on for an
additional 10 minutes.
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