I have no heat, i took the dash off and i can see the heater core behind a black plastic wall. Im trying to get to the mixer flap to see if it is possibly stuck. Does anyone know where that mixer flap is, or have a diagram showing how to get to it. Anything will help thanks.

Or is there like a heater blower motor that could have gone out, and when i switch from cool to hot on the control, that the flap is working but the blower does not.