Inducer fan motor turns on, then you can hear the gas valve trying to kick on, but the igniter never comes on.

The gas valve should even be trying to click on until the igniter is activated,, is it giving a code, (on the circuit board?)

Not to sound stupid, but I didn't see anything that would give a code on the circuit board(a red light and that is it).

Sounds like a new ignitor is in order. It should be glowing during the ignition trials.

I second that,replace the ignitor.

That's what I was thinking it was but it's my mother-in-laws heater and I didn't want to start replacing a bunch of parts that I didn't need to replace, so thanks.

not to sound stupid, but i didn't see anything that would give a code on the circuit board(a red light and that is it).

Most will give a blinking code if the igniter is bad,, but yes some don`t

Thank you all, it looks like I will be buying a ignitor tomorrow. Once again, thank you all