In my 05 Yukon XL, when I hit the recirculate button on the hvac, there isn’t a noticeable increase in sound and airflow like there was in my 03 Tahoe. 05 has electric fans and 03 did not. Was asking my neighbor to bring home tech2 one weekend to check out the door position and make sure...
I've searched, but can't find any posts on the rear HVAC control (in the overhead console) LED conversion. There are 4 bulbs in that unit. I'm trying to find out the polarity of the 4 solder spots on the board. Any help is appreciated.
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