4x4 problems

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ajm108

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Oct 7, 2008
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HELP!!!
I'm having problems with my 99 yukon when I start my truck all the lights on the switches light up then go out the service 4wd light is lit up so I figured that it was the tccm got one from the local wrecker and replaced it with no results now I was going to try and replace the the encoder but the transfer case is in 2wd.
1. How do I manually put the transfer case into neutral if the dash switches do not work?
2. Is it really the encoder?

Thanks for any help
 
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