Engine Overheating; If Steam Is Coming From Your Engine - GMC T-Series 1999 Owner's Manual

Engine Overheating

You will find a coolant temperature warning gage and a
CHECK GAGES warning light on your vehicle's
instrument panel. If you have a diesel engine, there will
also be a LOW COOLANT warning light.

If Steam Is Coming From Your Engine

5-14
CAUTION:
Steam from an overheated engine can burn you
badly, even if you just tilt the cab. Stay away
from the engine if you see or hear steam coming
from it. Just turn it off and get everyone away
from the vehicle until it cools down. Wait until
there is no sign of steam or coolant before you tilt
the cab.
If you keep driving when your engine is
overheated, the liquids in it can catch fire. You or
others could be badly burned. Stop your engine if
it overheats, and get out of the vehicle until the
engine is cool.
NOTICE:
If your engine catches fire because you keep
driving with no coolant, your vehicle can be
badly damaged. The costly repairs would not be
covered by your warranty.
yellowblue