As i've mentioned before in another AC thread, my 5'th gear doesnt work in my truck. 1-4 work great, but 5'th just shuts down completely. I replaced the resistor pack, but with no change. Is there any way that i can test the switch itself before i go spending more unnecessary money at this thing? It's a 2000 with normal HVAC controls. I searched all the way back to 06 and still didnt find the answer i'm looking for.