Dont believe there is one.
in front of the air filter.
Under the air filter compartment.
1996 Chevy Lumina 3.4
The 1993 Chevrolet Lumina air-conditioning diagram can be obtained from most Chevrolet dealerships. The air-conditioning diagram can also be found at most auto-parts stores.
on the firewall between the engine and dash board
Behind the air filter box,you may have to remove the box.
schematic of 1998 chevy lumina ltz 3.8l air conditioner
the low pressure{or suction}line is located under the air filter housing
Change your thermostat. Mine had the same problem and it was stuck open.
where are the ports to recharge the air conditioning on a 1998 chevy lumina car with a v6?
My 1998 Chevy Lumina has air conditioning. I assume that was the question if Luminas come with a/c.