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4wd selector back light flickering.

Gearhead54

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I starter my truck yesterday morning and the back light for 4 auto - 2 high -N - 4low - 4 high and yellow indicating light were flickering. Irregular, pulse to flicker. PRND was normal. It was in 4wd high. I got off my snowy township road and wanted 2wd. It did not work. It wouldn't respond. That was 2 miles from my house. 1 more mile, back light went to normal, steady light and then I pushed 2 high and it worked. Any one else have this issue? I have had numerous issues with my truck. Am/FM quits. Whole screen quits. 2 button reset doesn't work on mine. Back glass started leaking 2 weeks ago. Any modules at rear of cab that might be corroded?
 
I starter my truck yesterday morning and the back light for 4 auto - 2 high -N - 4low - 4 high and yellow indicating light were flickering. Irregular, pulse to flicker. PRND was normal. It was in 4wd high. I got off my snowy township road and wanted 2wd. It did not work. It wouldn't respond. That was 2 miles from my house. 1 more mile, back light went to normal, steady light and then I pushed 2 high and it worked. Any one else have this issue? I have had numerous issues with my truck. Am/FM quits. Whole screen quits. 2 button reset doesn't work on mine. Back glass started leaking 2 weeks ago. Any modules at rear of cab that might be corroded?
Could be an issue from your rear window leak, but who knows. Could be a frozen actuator on the transfer case and after it warmed up, it was fine. Just some thoughts.
 
Nevermind. My 7 second video is too large of a file. Trimmed to 3 seconds and says not allowed on this extension.
 
Mine started doing that this winter. Seems when it is extremely cold it flickers until it warms up and then works like it should. When mine does this the radio screen stays blank and I can’t control the heat at all. Once it warms up everything starts working all at once. I’m out of warranty so I’ve just been living with it, but if someone has a true fix I’ll definitely do it
 
mine was doing this this weekend also.. lots of snow of course..
 
I am worried about ice, water or corrosion on electrical equipment located behind the back seat. I saw one video on YouTube, where the key fob detection module thingy was corroded located back there. Acted like the fob was dead. Left the truck stranded.
 
I am worried about ice, water or corrosion on electrical equipment located behind the back seat. I saw one video on YouTube, where the key fob detection module thingy was corroded located back there. Acted like the fob was dead. Left the truck stranded.
That would be the RF hub.
Way too common of a failure point when there is water intrusion in the back.
The hub itself is not overly expensive, problem is that only a dealer can do the programming, so a hassle in my book.
 

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