Yes the whole enclosure, my thought was to try and swap essentially the entire system, climate control and all over since I’m already running a 5.3L and have everything in place to run it with minimal wiring modifications
Just poor output, last winter I had to pull over and scrape ice off the windshield a handful of times in roughly 25 miles. Replaced motor, resistor, and speed switch. Pulled the heater core and hosed it out as well.
Has anybody done or attempted to swap the heat box out of a 99-07 Silverado? Just not happy with the factory system and I’ve got a couple parts trucks (99-07) laying around, so it’s something I was pondering.