Two Safety Cautions About Engine Fan Breakage - GMC T-Series 1999 Owner's Manual

CAUTION:
You can be injured and your vehicle could be
damaged if you try to do service work on a
vehicle without knowing enough about it.
D
Be sure you have sufficient knowledge,
experience, the proper replacement parts
and tools before you attempt any vehicle
maintenance task.
D
Be sure to use the proper nuts, bolts and
other fasteners. "English" and "metric"
fasteners can be easily confused. If you use
the wrong fasteners, parts can later break
or fall off. You could be hurt.
Two Safety Cautions about Engine
Fan Breakage
CAUTION:
Changing the Fan Drive Ratio or Engine
Governed Speed
If you change the fan drive ratio or increase the
governed speed of the engine, you may increase
stress on the engine fan and the fan could
eventually fail. If the fan breaks apart while it is
rotating, the flying pieces can cause severe injury
--
to anyone such as a service technician
nearby. And, of course, the pieces can severely
damage the vehicle. Don't change the fan drive
ratio or increase the governed speed of the
vehicle without getting the necessary information
from your dealer.
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CAUTION: (Continued)
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