only have high-speed for hvac blower switch--replaced sdeed switch-replaced ac push control--still no speed selection. Is there a reostat switch or control somewhere? There's only two wires at the blower motor.

It's the blower resistor module that goes bad, not the actual switch.
It's mounted inside the ductwork, under the dash, passenger side. look for 3-4 wires going to a connector in the duct. Un-plug, then undo the 2 screws that hold it on. Looks like 3-4 coils of wire on the inside of the module.

boy, that was fast. thank you i removed the modul and sure enough, all three coils are burnt into. thanks again