Chevrolet 1995 Monte Carlo Owner's Manual page 181

3. After the engine cools, open the coolant air bleed
valve.
3.1 L L82
(Code
M)
Engine
3.1L
V6 (VIN Code M): There are two bleed valves.
One is located on the thermostat housing. The other is
located on the thermostat bypass tube.
3 1
3.4L LQl
(Code X) Engine
3.4L
V6 (VIN Code X): There are two bleed valves.
They are located on the thermostat housing and heater
inlet pipe.
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