Pontiac Repair: I have a 98 Pontiac Grand..., pontiac grand prix, heater core

Question
I have a '98 Pontiac Grand Prix and the blower motor does not work on settings 1&2 but works fine on 3,4& 5. also when I run the heater I get a puddle of water on the front passenger side floorboard could this by a sign of the heater core going out?

Answer
the blower speed switch could be to blame.i would check the contacts on the back of the switch and make sure they are tight.it could also be a bad switch.there is also a relay that controls the speed of the blower and it should be located near the blower moter somewhere on the fire wall.as for the water on the floor board.it could be the heater core or it could be the drain underneath your evaporator core that allows the moisture to leak outside to the ground.this may just have a partial clog but when alot of moisture is created {when using defrost maybe}it might leak.if the heater core is leaking there should be a strong smell of antifreeze.