Д caution, A caution – GMC 2003 Sierra User Manual
Page 410
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Д CAUTION:
Turning the sunge isnh pressure cap when the
engine and radiator are hot can allow steam
end scalding liquid? to blow oui and burn you
badly. Never turn the surge tank pressure
tap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark.
If
the LOW COOLANT LEVEL message comes on and
stays on, it means yOuVe low on engine codanl.
See "Low Coolant Level" ur^der DiC Warnings and
Massages on page 3-60.
Adding Coolant
li you need more cootanl, add thg proper DEX-COOL''*
coolBot mixture ai ihe surge but only when the
engine is cool.
A CAUTION;
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn M the engine parts are hat
enough- Don4 spilt coolant on a hot engine.
When replacing tha pressure cap, make sure it is
hand-tight.
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