low coolant light on but resevoir is full

hey all

i just changed the top rad hose on my kids car i topped up the resevoir with coolant to replace what i lost and now his low coolant light is on. the resevoir is full im guessing i must have a air bubble. i tried cracking loose what i thought to believe was a bleeder but the light is still on. the car isnt over heating or anything. but i want that light off.

any help would greatly be appreciated

thanks

oh ya i should mention the car is a 96 corsica withe a 3.1 engine

The indicater is in the radiator, and is towards the top. I would say you are low in the radiator itself. Not sure if your's has this but our 91 had a bleeder screw on it in the front of the engine you loosened while running the engine to take air out of the motor. Then squeeze the upper hose several times to expel air our of top of radiator. Refill as needed.