Chevrolet Kodiak 2006 Owner's Manual page 106

Locking Hubs
Hublock Dial Location
Turn the dial of the hublock (A) from the "Free" position
to the "Lock" position to lock the front axle.
Turn the dial of the hublock (A) from the "Lock" position
to the "Free" position to unlock the axle.
You do not have to back the vehicle up to disengage
the hublocks.
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Hublock Dial
An indicator light will show you which position the
transfer case is in. The indicator lights will come on
briefly when you turn on the ignition and one will stay on.
If the lights do not come on, you should take your
vehicle to your dealer for service. An indicator light will
flash while shifting the transfer case. It will remain
illuminated when the shift is complete. If for some
reason the transfer case cannot make a requested shift,
it will return to the last chosen setting.
If your vehicle is equipped
with four-wheel drive, the
transfer case knob is
located to the right of the
steering wheel on the
instrument panel. Use this
knob to shift into and
out of four-wheel drive.