Okay so several months back everyone was talking about the Pontiac HVAC control that fit in our H3's and was like half the price. Well when I bought mine it was still on the cool side down here in TX. Well when it started to heat up I noticed on my wife's H3 that I was smelling a lot from outside the cabin as we drove around even though the Recirculate LED was on. When we stopped I pushed it and found out interesting enough the button/LED for Recirculate was reversed on the Pontiac HVAC control which was no big deal. Well as the TX heat got worse I also noticed that both my H3's evaporator cores would eventually freeze over on long drives. Had both H3's HVAC sytems checked and they were good. Then last weekend it hit me that I had swapped out the Original H3 HVAC controls for the Pontiac HVAC control..... So as an experiment I put the originals back in and I have now confirmed that both my H3's no longer freeze up!!!
The boards look identical, the Part # & revision were the same, but from my testing/results they're programmed to operate differently vs our H3's.
Just wanted to post my findings.
The boards look identical, the Part # & revision were the same, but from my testing/results they're programmed to operate differently vs our H3's.
Just wanted to post my findings.
