Heater problems

[Ryan625]

In my 99 GA when the heater or A/C is on there is a high pitched noise, but when i turn it off the noise continues for about 2-3 seconds...what could it be?

[xeroinfinity]

sounds like your blower motor is going out.
Probly due to water in the blower housing.

You'll need to inspect the motor and the hvac drain for a clog, it's on the pass side.
see this link...
Blower Motor & Resistor Removal - 99+ Grand Am