Pontiac 2005 Bonneville - Manual (Page 158)

Engine Coolant Temperature Gage
(V8 Engine)
This gage shows the engine coolant temperature.
To prevent engine overheating, the air conditioning
compressor will turn off automatically just prior to
the gage pointer entering the shaded area. As the
engine cools down, the air conditioning compressor will
automatically turn back on. On vehicles equipped
with the Driver Information Center (DIC), the message
ENGINE HOT... A/C DISABLED will appear on the
DIC display and a warning chime will sound.
If the gage pointer moves into the shaded area, your
engine is too hot. On vehicles equipped with the
systems monitor, the CHECK GAGES light will come on
and a warning chime will sound. On vehicles with a
DIC, a CHECK GAGES TEMPERATURE message will
be displayed and a warning chime will sound. See
DIC Warnings and Messages on page 3-62 for more
information.
On vehicles with a V8 engine, if the coolant temperature
is above normal operating range, the message
ENGINE HOT...IDLE ENGINE will appear. This means
that you should reduce the engine load and speed
to prevent the engine from overheating.
If an engine overheat condition exists, the message
ENGINE HOT...STOP ENGINE will appear. This means
that you should pull off the road, stop your vehicle,
and turn off the engine as soon as possible.
See Engine Overheating (3.8L V6 Engine) on page 5-36
or Engine Overheating (4.6L V8 Engine) on page 5-38,
for information on what to do if your engine overheats.
Your vehicle is equipped with an Overheated Engine
Protection Operating Mode, which alternates firing
groups of cylinders to help prevent engine damage. See
“Overheated Engine Protection Operating Mode”
under Engine Overheating (3.8L V6 Engine) on
page 5-36 or Engine Overheating (4.6L V8 Engine) on
page 5-38 for more information.
United States Canada
3-46