I have a 2009 Yukon xl slt. It doesn't have the nav screen. Just the regular one. I bought the truck and since I owned the screen won't brighten. You can use the dim knob and everything brightens but the screen. Is this fixable or. Do I have to buy a new one? You can barely read the screen.
Thanks
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Thanks
Sent from my SM-G955W using Tapatalk