Chevrolet 1996 Cavalier Owner's Manual page 224

I
4.
I
With the coolant surge tank pressure cap off, start
the engine
and
let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine fan.
By this time, the coolant level inside the coolant surge
tank may be lower. If the level is lower, add more of the
proper mix to the coolant surge tank until the level
reaches the FULL COLD mark.
5. Then replace the
pressure cap. Be sure the
pressure cap is tight.
5-20