GMC 2010 GMC Sierra, Owner'S Manual

Page: 390 / 660

Before You Go Off-Roading
. Have all necessary maintenance and service
work done.
. Make sure there is enough fuel, that fluid levels are
where they should be, and that the spare tire is
fully inflated.
. Be sure to read all the information about
four-wheel-drive vehicles in this manual.
. Make sure all underbody shields, if the vehicle has
them, are properly attached.
. Know the local laws that apply to off-roading where
you will be driving or check with law enforcement
people in the area.
. Be sure to get the necessary permission if you will
be on private land.
If you think you will need some more ground clearance
at the front of your vehicle, you can remove the front
fascia lower air dam. The air dam is held in place by
two bolts and 10 snaps accessible from underneath the
front fascia.
To remove the air dam:
1. Remove the two outboard air dam bolts.
2. With a flat ‐ blade tool, disengage the snaps.
3. After the bolts are removed and the snaps are
disengaged, push forward on the air dam until it
is free.
Notice: Operating your vehicle for extended periods
without the front fascia lower air dam installed can
cause improper air flow to the engine. Always be
sure to replace the front fascia air dam when you
are finished off-road driving.
After off-roading, be sure to reinstall the air dam:
1. Line up the snaps and push the air dam rearward
to engage the snaps.
2. Install the two outboard bolts.
5-14