GMC 2003 Envoy - Manual (Page 319)

Engine Coolant
The cooling system in your vehicle is til led wiih
□ЕХ“СОо1*® engine coolan!. This coolant Is designed
lo remain in your vehicle tpr 5 years or 150,000 miles
{240 000 kmj, whichever occurs first, if you add
only DEX-COOL'*^ EKlonded liie coolant
The foitowing explains your cooling system and how lo
add coclan! ivhen it is low. ti you have a prqtjlem
with engine overeating, see Oveffteatrrjg on
page 5-2?.
A SQ.-5Q mixture ol dean, drinkable water artd
DEX-COOL* coolar^t will:
• Give freezing protEction down tn -34'^F (-37'C),
• Give boiitng protection up (o
• Protoct ageinsi rusi and coiffosion
• Help keep the proper engine temperature.
• Lei The warning lights and gages work as
they should.
Notice: When adding coolari:t. it I? important that
you uee only DEX^OOL® (ail I cate-free) caolant.
If coolant other than DEX-COOU® is added to
the system, premature engine, heater core or
radiator coircaion may result. In addition, the engine
coolant will require change sooner - at 30,000 miles
(50,000 km) or 24 months, whichever occurs first.
Damage caused by the use of coolant other
than DEX-COOL* ia not covared by your new
vehicle warranty.
What to Use
Use a mixture of one-half cleen, drinkabfo water and
one^ha!! DEX^COOL® coolant which won't damage
aluminum parts, II you use this coolant mixture,
you don'l need 1o add anything else.
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