Gauge Cluster no lights and small info screen no power 2017 Yukon XL

[tmurray4192]

Well I have an odd one here. I left wet pressure treated lumber in yukon for 3 days during hot humid weather. There was beads of water dripping down the windows. After starting the yukon the center entertainment screen was black and also the cluster gauges had no lights and the small info screen had no power (was black). After running the heater on high for 9 hours the entertainment screen came back. It has been 9 months and still no gauge cluster lights and small info screen. I have checked engine bay, driver, passenger and rear driver side fuse boxes. I checked passenger side front entertainment wire connections behind glove box as well. All the grounds look good. I did not check the one that is in the driver side front pillar. Is there a separate computer for this? Help!

 

[Big Mama]

Check the one you didn’t. I can see how water ran down the A pillar. I don’t think it has a separate computer but I may be wrong.

 

[tmurray4192]

Well I have an odd one here. I left wet pressure treated lumber in yukon for 3 days during hot humid weather. There was beads of water dripping down the windows. After starting the yukon the center entertainment screen was black and also the cluster gauges had no lights and the small info screen had no power (was black). After running the heater on high for 9 hours the entertainment screen came back. It has been 9 months and still no gauge cluster lights and small info screen. I have checked engine bay, driver, passenger and rear driver side fuse boxes. I checked passenger side front entertainment wire connections behind glove box as well. All the grounds look good. I did not check the one that is in the driver side front pillar. Is there a separate computer for this? Help!

I have a follow up. I hope this helps someone if they have this issue. After test every fuse with a meter, tearing apart my dash and checking every connection related to this issue and cleaning all the grounds. I found an article from GMC mentioning this issue i have is a known problem that can be related to an software issue or bad ICP (instrument cluster panel). I ordered an used one and bingo everything worked with the exception of my mileage is blank. I have to find out how I get the mileage stored in BCM or ECM into the used ICP. Not sure if the wet lumber mentioned had a hand in this issue.