GMC 2003 Savana - Manual (Page 274)

If thBie seems to be no leak. slaH ihe engine again.
See II tbe engine cooling fan speed increases when hdle
speed is doubled by pushing the a-cceleralor pedal
down, li il doesn'i. your vebicle needs service Turn off
The engine.
Nolice: Engine damage from running your engine
without coolant isn't covered by your warranty.
See “Overheated Engine Pratecllon Operating
Mode" in the IndoK for information on driving to a
safe place In an emergency,
Notice: When adding coolant, it is Important that
you use only □ EX-COOL* (silicate-free} eoofant,
(t coolant other than 0EX-COOL* is added to
the system^ premature engine, heater core or
radiator corrosion may result. In addiliorr, the engine
coolant will require change sooner— at 30,000 miles
{50 OOQ km) or 24 months, whichever occurs first.
Damage caused by the use of coolant otber
than DEX-COOL” as not covered by you г new
vehicle warranty.
II there seems to bo no leak, start the engFne again.
See if the engine cooling Ian speed mcreases when idla
epead is doubled by pushing the accelerator pedal
down. If it doesn't, your vehicle needs service. Turn oif
ihe engine.
How to Add Coolant to the Coolant
Recovery Tank
If you haven't tound a problem yet, but the coolant level
isn't at the COLD FILL mark, add a 50/50 miKtunj of
dean, dfinhabie wafer and DEX-COOL* engine coolant
g1 the coolant recovery tank. See Engine Coolant on
page 5-24 for more information.
Adding only plain water Lo your cooling
system can be dangerous. Plain water^ or
sorne other liquid such as alcohoF, can boil
before the proper coolant mlnture will. Your
vehicle's coolant warning sysfam 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 501/50 mixture of clean,
drinkable water and DEX COOL* coolant.
Wof/№: In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
cootsnt mixture.
5^31