Hummer H3T Owner's Manual page 337

04AKENG59_H3T.fm Page 337 Thursday, July 31, 2008 12:07 PM
The engine coolant temperature
gage shows the engine coolant
temperature. If the pointer reaches
the shaded warning area of the
gage, the engine is too hot!
An overheat warning message
may appear in the driver
information center display.
See "Driver Information Center
Messages" in Section 1 for more
information.
To avoid added strain on a hot
engine, the air conditioning
compressor is automatically
turned off.
If you see or hear steam coming
from the engine, stop and turn the
engine off. Do not open the hood
until the engine has cooled down.
CAUTION
Continued operation of an
overheated engine may result
in a fire and the possibility of
personal injury and/or severe
vehicle damage.
Any resulting damage would
not be covered by your
warranty.
If you get the overheat warning
with no sign of steam:
1. Turn off your air conditioner
and turn on the heater at high
speed.
2. In heavy traffic, shift to
N (Neutral) while stopped.
Pull over and stop the vehicle
as soon as it is safe to do so.
Allow the engine to idle for a
few minutes.
Section 5
If you no longer have the overheat
warning, you may continue to
drive the vehicle, but at a slower
speed for 10 minutes.
If the warning does not come back
on, you can drive normally.
If the light stays on or the coolant
temperature gage still shows an
overheat condition, pull over, stop
and park your vehicle right away.
The vehicle should be parked on a
level surface.
If there is still no sign of steam, run
the engine at idle speed for about
3 minutes.
If the overheat warning continues,
turn off the engine and get every-
one out of the vehicle right away.
You may decide not to lift the
hood, but instead get service help
right away.
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