Before Driving Off-Road
○ Have all necessary maintenance and service work completed.
○ Fuel the vehicle, fill fluid levels, and check inflation pressure in all tires,
including the spare, if equipped.
○ Read all the information about all-wheel-drive vehicles in this manual.
○ Make sure all underbody shields, if equipped, are properly attached.
○ Know the local laws that apply to off-road driving.
To gain more ground clearance if needed, it may be necessary to remove the front fascia lower air dam.
Notice: Operating the vehicle for extended periods without the front fascia lower air dam installed can cause improper air flow to the engine. Re&-attach the front fascia air dam after off-road driving.
See also:
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehic ...
Lane Departure Warning (LDW)
For vehicles with this feature, read the entire section before using it.
WARNING
The LDW system does not steer the vehicle and is an aid to help the vehicle stay
in the driving lane. The LDW syste ...
Portable Audio Devices
Some vehicles have a 3.5 mm (1/8 in) auxiliary input and a USB port located in
the center console. External devices such as iPods®, laptop computers, MP3 players,
CD changers, and USB storage dev ...





