Oldsmobile 1995 Cutlass Supreme Owner's Manual page 192

3.4L LQ1 (Code X) Engine
They are located on the thermostat housing and heater
inlet pipe.
3.4L V6 (VIN Code X): There are two bleed valves.
4. Fill the radiator
with the proper
mix, up. to the base
of the 'filler neck.
If you see a stream.of coolant coming from an air
bleed valve, close the valve. Otherwise, close the-
valves after the radiator i.s filled.
5. Rinse or wipe any spilled coolant from the engine
and compartment.