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GMC 2003 Envoy XL - Checking Coolant

GMC 2003 Envoy XL
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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 wouldn’t get the overheat warning.
Your engine could catch fire and you or others
could be burned. Use a
50/50
mixture of clean,
drinkable water and
DEX-COOL@
coolant.
Notice:
If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost wouldn’t 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 don’t
have
to
add extra inhibitors or additives which claim
to improve the system. These can be harmful.
Checking Coolant
The engine coolant
recovery tank is in the
engine compartment
on the passenger’s side
of the vehicle. See Engine
Compartment Overview
on page
5-12
for more
information
on
location.
The vehicle must be on
a
level surface. When your
engine is cold, the coolant level should be at
FULL
COLD, or a little higher. When your engine is warm,
the level should be at the base of the filler neck or a
little higher.
5-25

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