Chevrolet 2003 Silverado 1500 Pickup Owner's Manual page 332

Rocking Your Vehicle To Get It Out
First, turn your steering wheel left and right. That will clear
the area around your front wheels. If you have a
four-wheel-drive vehicle, shift into 4HI. If your vehicle has
the Traction Assist System, you shouid turn it off by
pressing the TAS on/off button. Then shift back and forth
between REVERSE
(R)
and a forward gear (or with a
manual transmission, between FIRST (1) or SECOND (2)
and REVERSE (R)), spinning the wheels as little as
possible. Release the accelerator pedal while you shift,
and press lightly on the accelerator pedal when the
transmission is in gear. By slowly spinning your wheels in
the forward and reverse directions, you will cause a
rocking motion that may free your vehicle. If that doesn't
get you out after a few tries, you may need to be towed
out. Or, you can use your recovery hooks if your vehicle
has them. If you do need to be towed out, see Towing
Your Vehicle on page 4-53.
Using the Recovery Hooks
Your vehicle may be equipped with recovery hooks. The
hooks are provided at the front of your vehicle. You may
need to use them if you're stuck off-road and need to be
pulled to some place where you can continue driving.
4-51