Chevrolet 2001 Monte Carlo Owner's Manual page 272

3400 V6 Bleed Valve
#1
3400 V6 Bleed Valve
#2
3800 V6 Bleed Valve
3400 V6 engine: There are two bleed valves. One is
located on the thermostat housing. The other is
located on the thermostat bypass tube.
3800 V6 engine: There is one bleed valve.
It is located on the thermostat housing.
4. After the engine
cools, open
the coolant
air bleed valve
or valves.
5-19