Oldsmobile 2001 Aurora - Manual (Page 284)

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If the LOW ENGINE COOLANT DIC message comes
on and stays on, it means you’re low on engine coolant.
Adding Coolant
If you need more coolant, add the proper DEX - COOL
R
coolant mixture at the surge tank, but only when the
engine is cool.
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don’t spill coolant on a hot engine.
When replacing the pressure cap, make sure it
is hand
- tight.