Hummer 2006 H2 - Manual (Page 150)

To activate Automatic mode for de-icing, press the
heated washer switch. The indicator light starts to flash
at a one second rate. Once the washer fluid is
heated, approximately 25 seconds, it is sprayed on the
windshield. This cycle will repeat four times
(approximately every six seconds) and then the unit will
return to Standby mode. Pressing the heated washer
fluid button at any time during this cycle will stop
the Automatic mode and return it to Standby. Automatic
mode is recommended while the vehicle is parked.
In the case of a rapidly flashing light indicator on the
heated washer switch, it may be necessary to wait for up
to one minute for the light to stop flashing, then cycle
the ignition.
Rear Window Wiper/Washer (SUV)
If your vehicle has a rear
window washer/wiper, the
control knob is located
on the instrument panel
to the left of the
steering wheel.
{ CAUTION:
In freezing weather, do not use your washer
until the windshield is warmed. Otherwise the
washer fluid can form ice on the windshield,
blocking your vision.
To turn the rear wiper on, turn the knob to either 1 or 2.
For long delayed wiping, turn the knob to 1. For short
delayed wiping, turn the knob to 2.
9 (Off): To turn the wiper off, turn the knob to
this symbol.
= (Washer Fluid): To wash the window, press the
knob with this symbol.
The rear window washer uses the same fluid reservoir
as the windshield washer. However, the rear window
washer will run out of fluid before the windshield washer.
If you can wash your windshield but not your rear
windows, check the fluid level.
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