Zero Heat

[special-K]

I finally got my '95 Suburban's heater control replaced but the fan barely worked then stopped. I have a new blower motor and fan resistor still to install. But I am getting no temp what so ever drifting out of any vents. The temp gauge shows proper warm up temp, but I will check the thermostat for sticking open. I really think it's something else. By the engine temp I should at least feel slight warmth at the vents. Nothing.

I'm not familiar with how the heat system in these trucks works. Is there any sort of control that could affect this? What does the temperature door motor do? Could it allow no temp passage at all if not operating? Could a bad air inlet door block temp 100%?

I know it would help to have the blower working. I'd just like to get my ducks in a row for this other problem before getting into it so I can get it all at once.