Buick RIVIERA 1993 Manual page 198

Engine Overheating
You willi find a coolant temperature gage and
the
warning light about a hot engine on your Buick
instrument panel.
If Steam Is Coming From Your Engine:
I
A
CAUTION:
Steam from an overheated engine can burn you
badly, even if you just open the hood. 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
opening the hood.
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.
If No Steam Is Coming From Your Engine:
If you get the overheat warning but see or hear no
steam, the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high speed driving.
Id.le for long periods in traffic.
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan
3. Try to keep your engine under load (in a drive gear
speed and open the window as necessary.
where the engine runs slower).