heating PONTIAC GRAND PRIX 2007 User Guide

Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is properly
and tightly secured.
SeeEngine Compartment Overview on page 346
for more information on location.
Engine Overheating
There is a coolant temperature gage and a
warning light on the instrument panel that indicate
an overheated engine condition. SeeEngine
Coolant Temperature Gage on page 180
andEngine Coolant Temperature Warning Light
on page 179.
If Steam Is Coming From Your Engine
{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. 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 open the hood.
If you keep driving when the vehicles
engine is overheated, the liquids in it can
catch re. You or others could be badly
burned. Stop your engine if it overheats,
and get out of the vehicle until the engine
is cool.
SeeOverheated Engine Protection
Operating Mode on page 366for
information on driving to a safe place in
an emergency.
364

When the engine is cold, the coolant level should
be at or above the cold ll line on the coolant
recovery tank. To check the coolant level, look for
the cold ll line on the side of the coolant
recovery tank that faces the engine. If the level is
not correct, there may be a leak at the pressure
cap or in the radiator hoses, heater hoses,
radiator, water pump, or somewhere else in the
cooling system.
{CAUTION:
Heater and radiator hoses, and other
engine parts, can be very hot. Do not
touch them. If you do, you can be burned.
Do not run the engine if there is a leak. If
you run the engine, it could lose all
coolant. That could cause an engine re,
and you could be burned. Get any leak
xed before you drive the vehicle.If there seems to be no leak, with the engine on,
check to see if the electric engine cooling
fan(s) are running. If the engine is overheating,
the fan(s) should be running. If the fan(s) are not
running, the vehicle needs service.
Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. SeeOverheated Engine Protection
Operating Mode on page 366for information on
driving to a safe place in an emergency.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant could require changing sooner, at
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
368

Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your GM Warranty booklet
for details. For additional information refer to
the tire manufacturer’s booklet included with your
vehicle.
{CAUTION:
Poorly maintained and improperly used
tires are dangerous.
Overloading your vehicle’s tires can
cause overheating as a result of too
much friction. You could have an
air-out and a serious accident. See
Loading Your Vehicle on page 317.
CAUTION: (Continued)
CAUTION: (Continued)

Underinated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked when
your vehicle’s tires are cold. See
Inflation - Tire Pressure on page 408.
Overinated tires are more likely to be
cut, punctured, or broken by a sudden
impact — such as when you hit a
pothole. Keep tires at the
recommended pressure.
Worn, old tires can cause accidents. If
the tire’s tread is badly worn, or if
your vehicle’s tires have been
damaged, replace them.
400

Driving
At Night................................................... 302
City.......................................................... 306
Defensive................................................. 284
Drunken................................................... 285
Freeway................................................... 307
Hill and Mountain Roads.......................... 309
In Rain and on Wet Roads...................... 303
Rocking Your Vehicle to Get it Out.......... 316
Winter...................................................... 311
Dual Automatic Climate Control System....... 162
E
Electric Power Management........................ 150
Electrical System
Add-On Equipment................................... 459
Fuses and Circuit Breakers...................... 460
Headlamp Wiring..................................... 459
Instrument Panel Fuse Block................... 460
Power Windows and Other Power
Options................................................. 459
Underhood Fuse Block............................. 462
Windshield Wiper Fuses........................... 459Engine
Air Cleaner/Filter...................................... 355
Battery..................................................... 381
Check and Service Engine Soon Light..... 180
Coolant.................................................... 360
Coolant Heater......................................... 108
Coolant Temperature Gage...................... 180
Coolant Temperature Warning Light.......... 179
Drive Belt Routing.................................... 485
Engine Compartment Overview ................ 346
Exhaust................................................... 119
Oil ........................................................... 350
Oil Life System........................................ 353
Overheated Protection Operating Mode.... 366
Overheating............................................. 364
Starting.................................................... 107
Supercharger Oil...................................... 355
Enhanced Traction System (ETS) ................ 293
Warning Light........................................... 179
Entry Lighting.............................................. 148
Event Data Recorders (EDR)...................... 504
Extender, Safety Belt..................................... 38
Exterior Lamps............................................ 144
Exterior Lighting Battery Saver.................... 146
517