GM YUKON XL Automobile User Manual


 
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See Recommended Fluids and
Lubricants on page 711.
Headlamp Aiming
The vehicle has a visual optical headlamp aiming
system. The aim of the headlamps have been preset at
the factory and should need no further adjustment.
However, if the vehicle is damaged in a crash, the aim
of the headlamps may be affected and adjustment may
be necessary.
If oncoming vehicles flash their high beams at you, this
may mean the vertical aim of your headlamps needs to
be adjusted.
It is recommended that the vehicle is taken to your
dealer for service if the headlamps need to be adjusted.
It is possible however, to re-aim the headlamps as
described.
The vehicle should:
.
Be placed so the headlamps are 25 ft. (7.6 m) from
a light colored wall.
.
Have all four tires on a level surface which is level
all the way to the wall.
.
Be placed so it is perpendicular to the wall.
.
Not have any snow, ice, or mud on it.
.
Be fully assembled and all other work stopped
while headlamp aiming is being performed.
.
Normally loaded with a full tank of fuel and one
person or 160 lbs (75 kg) sitting on the driver seat.
.
Have the tires properly inflated.
.
Have the spare tire is in its proper location in the
vehicle.
Headlamp aiming is done with the vehicle's low-beam
headlamps. The high-beam headlamps will be correctly
aimed if the low-beam headlamps are aimed properly.
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