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 5-25.
A 50/50 mixture of clean, drinkable water and proper
coolant will:
•Give freezing protection down to−22°F (−30°C).
•Give boiling protection up to 268°F (131°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 ofclean, drinkable waterand 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.
For protection in extremely cold weather conditions,
use a 40/60 mixture of clean, drinkable water and proper
coolant.
{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.
Notice:If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
5-23
W
Warning Lights, Gages and Indicators................3-17
Warnings
Hazard Warning Flashers............................... 3-3
Other Warning Devices.................................. 3-4
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle......................................5-79
Weatherstrip Lubrication...................................6-20
What Kind of Engine Oil to Use........................5-16
What to Do with Used Oil................................5-19
What to Use..................................5-23, 5-34, 5-35
Wheels
Alignment and Tire Balance..........................5-64
Replacement...............................................5-64
When to Add Engine Oil..................................5-16
When to Change Engine Oil.............................5-18
When to Check..............................................5-59
When to Check and What to Use.....................5-22
When to Check Power Steering Fluid................5-34
When to Inspect the Engine Air Cleaner/Filter........5-20Where to Put the Restraint...............................1-37
Why Safety Belts Work....................................1-11
Window Lockout.............................................2-14
Windows.......................................................2-13
Manual......................................................2-14
Power........................................................2-14
Windshield Washer........................................... 3-7
Fluid..........................................................5-35
Windshield Washer Fluid Level Check................6-19
Windshield Wiper
Blade Replacement......................................5-50
Fuses........................................................5-84
Windshield Wiper Lever..................................... 3-6
Windshield Wipers............................................ 3-6
Winter Driving................................................4-24
Wiper Blade Check.........................................6-20
Y
Your Vehicle and the Environment....................... 6-2
14
