Engine Coolant
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-24.
A 50/50 mixture of clean, drinkable water and proper
coolant will:
•Give freezing protection down to−34°F (−37°C).
•Give boiling protection up to 265°F (129°C).
•Protect against rust and corrosion.
•Help keep the proper engine temperature.
•Let the warning lights and gages work as they
should.
What to Use
Use a 50/50 mixture of clean, drinkable water and coolant
that meets GM Specification 1825M, which will not
damage aluminum parts. You can also use a recycled
coolant conforming to GM Specification 1825M with a
complete coolant flush and refill. If you use this coolant
mixture, you do not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and the proper coolant.
Notice:If you use an improper coolant mixture, your
engine could overheat and be badly damaged. The
repair cost would not be covered by your warranty.
Too much water in the mixture can freeze and crack
the engine, radiator, heater core, and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
5-22
V
Vehicle
Control........................................................ 4-6
Damage Warnings........................................... iv
Loading......................................................4-27
Parking Your...............................................2-29
Symbols......................................................... iv
Vehicle Data Collection and Event Data
Recorders..................................................7-10
Vehicle Identification
Number (VIN).............................................5-74
Service Parts Identification Label...................5-74
Ventilation Adjustment......................................3-21
Visors...........................................................2-13
W
Warning Lights, Gages and Indicators................3-23
Warnings
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. ivWheels
Alignment and Tire Balance..........................5-56
Different Size..............................................5-54
Replacement...............................................5-56
Where to Put the Restraint...............................1-40
Windows.......................................................2-12
Manual......................................................2-12
Power ........................................................2-13
Windshield
Washer........................................................ 3-9
Washer Fluid..............................................5-31
Wiper Blade Replacement.............................5-44
Wiper Blades, Cleaning................................5-70
Wiper Fuses...............................................5-75
Wipers......................................................... 3-8
Windshield, Rear Washer/Wiper........................3-10
Winter Driving................................................4-22Y
Your Vehicle and the Environment....................... 6-2
12
