[67mater]

FYI, pass hood hinge must come off in order to pull the fan and it's still a tricky twist to get the compartment ahead of the core, which is where nesting usually occurs.

Is there air on cold? if not then definitely check that the fan is turning. Might also confir that cables are moving diverters, as you may have a nest AND abroken diverter so the air is always going into the heater core. Basically , take it apart

i would say you can take the front to sections of the inside boxx off relatively easily, and likely tell where your problem is (in fact pulling the rubber cover for the heater cable will let you see if the fan works.