GMC 2003 Savana Van Owner's Manual page 275

When the coolant in the coolant recovery tank
is
at the
COLD FILL mark, start your vehicle.
F
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.
5-32