Chevrolet 2001 Cavalier Owner's Manual page 265

Adding Coolant
If you need more coolant, add the proper DEX
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
Surge Tank Pressure Cap
R
-
COOL
NOTICE:
Your surge tank cap is a 15 psi (105 kPa)
pressure
prevent coolant loss and possible engine damage
from overheating.
-
tight.
-
type cap and must be tightly installed to
6-27