you don't have to take it in. You can bleed it yourself.
There is a plastic air vent plug on top of the heater hose. It's on the left side of the plenum towards the firewall. Just about underneath an accordian like conduit comming from beside the battery compartment. Take the radiator cap off, unscrew the plug (phillips head) and fill the radiator slowly to get the air out. You can see in the plug hole if it's out. If it's not, squeeze the upper radiator hose untill the fluid barely overflows. Then holding the upper hose with pressure, screw the plug back in. Refill the radiator if needed and you are good to go.

Larry

 

it is actually alot more time consumming than that. you will need to repeat that process many times while starting the car inbetween to get it all out. once the sloshing noise stops and your heater blows hot air when left to idle for awhile, you got it all out. but even then, check your radiator to make sure it stays full and the overflow too.