Chevrolet 1999 Silverado 1500 Pickup, Owner'S Manual, Page: 205 / 432

yellow blue
4-15
The following steps must be performed on each of the
push
-
pins to remove the air dam:
1. Insert the blade
portion of a
flat
-
blade
screwdriver
into the push
-
pin
slot and pull
downward until
the push
-
pin
snaps loose.
2. While continuing
to pull downward
on the push
-
pin,
squeeze and rotate
the expandable end
of the push
-
pin
with your fingers
or a pair of pliers
until it releases
from the retainer.
3. Pull the push
-
pins
and lower air dam
assembly away
from the retainers
until the lower air
dam is free.
When you’re back on roads, though, be sure to replace
the air dam.
NOTICE:
Operating your vehicle for extended periods
without the front bumper lower air dam installed
can cause improper air flow to the engine and
may allow things like fog lamps or tow hooks on
the front of your vehicle to be damaged. Always
be sure to replace the front bumper air dam
when you’re finished off
-
road driving.