Not having done it on a Lumina I will give you an answer that applies to most cars. Under the car at the bottom of the Raditor you will normally see a valve on either the far left or right side. Losen this valve with plires but be careful because many of the valves are made out of plastic. If you cannot find a valve just losen the lower raditor hose clamp and carefully pry the hose from the raditor.
answer if vehicle has valve, it is usually left hand thread so be careful it is also awfully slow using this valve however most cars no longer have this valve so just remove bottom radiator hoes from radiator if engine is hot be careful as coolant will be hot
* - 8/1/09 Open petcock on the passenger side of the radiator. This is not easy to do, but it is the enviromently cleanest way to do it. You will need to disconnect everything holding it into place, including the transmission cooler lines. you will need to slightly lift the radiator to reach the petcock. Good luck. - *
Drain plug usually at bottom or rear of the radiator
Plug at bottom or rear of radiator
It may or may not have a drain plug for the radiator. Look at the bottom of the radiator usually on the passenger side of the car. It doesn't really look like an actual plug. It is more like a plastick wing nut, just unscrew it and it should drain. Some radiators don't have drain plugs at all. If it doesn't just take off the lower radiator hose from either the radiator or the engine block and do it that way i think the sunfire drain is on the driverside of radiator facing forward. it should be a 1/4 inch hole in center. you have to turn and pull to drain. be careful not to damage plug or radiator.
The pitcock drain value is located on the lower left side of the radiator,you might need a pair of pliers to turn the drain.The coolant will drain out of the hole in the radiator's lower left ruubber mount. The pitcock drain value is located on the lower left side of the radiator,you might need a pair of pliers to turn the drain.The coolant will drain out of the hole in the radiator's lower left ruubber mount.
The radiator has a hard to see drain plug on the left drivers' side. There are 5 10MM screws holding the air deflector on. The block has removable plugs, one 14MM hex next to the oil filter and one in about the same location on the other side of the block toward the firewall under the exhaust manifold.
you have to take it to a shop that can professionally drain the refrigerant from the compressor. It is very hazardous stuff and CAN NOT be drained into the air, it has to be captured. Then you just have to unbolt the compressor. You may have to remove the radiator first.
Lower radiator hose. It may be easier to use the drain plug located on the left hand side of the radiator. Its on the back of the radiator. Do not mistake the heater core for the radiator. The radiator is the one with the thick rubber hoses. To take off the lower radiator hose you have to remove the air filter box.
The 1991 Pontiac Grand Am radiator drain plug can be found on the bottom of the radiator. The radiator drain plug will be in the center of the radiator bottom.
if there is no drain petcock on lower radiator tank, removing bottom radiator hose at radiator is the only way to drain radiator
on the radiator
I have a 2000 Pontiac Grand AM and radiator drain cock is located at the lower/front (not bottom) at the curbside of the radiator, you will need a hex key to back out petcock.
its at the bottom of the radiator
bottom of radiator
If it has one it will be located on the bottom of the radiator. If not, then just remove the lower hose to drain the radiator.
It is on the bottom of the radiator on the drivers side.
there may not be one if there is it is on the bottom if not you just remove the bottom radiator hose to drain
If it does not have a drain plug, just simply remove the lower radiator hose.
there may not be one if there is is it on the bottom side and if it is not you candrain it by removing the bottom rad hose The 1999 Pontiac Grand Am does not have a radiator drain valve. To drain the radiator, remove the lower radiator hose. The engine should be cold and the water fill cap removed for venting. I have a 2000 Pontiac Grand AM and radiator drain cock is located at the lower/front (not bottom) at the curbside of the radiator, you will need a hex key to back out petcock. .
Should be a plug either at the bottom or rear of radiator