Reply to thread

Message: <blockquote data-quote="idatahoe" data-source="post: 27948" data-attributes="member: 15122">I disconnected the battery, waited, and tried to shift the transfer case. No luck, still no lights for the transfer case shifting buttons. I checked the 4WD fuse and it was fine.Drained the transfer case fluid. It definitely needed replacing, but no signs of catastrophic failure. Same with the transmission.Pulled the front driveshaft and encoder motor. Was able to shift it, but it didn't always want to go into neutral. And sometimes in neutral, it would make a weird noise when spinning the input shaft, but not every time.Tested drive with the encoder motor out and shifting the transfer case. Very happy that the transmission seems to be fine.So the transfer case module, and/or motor is out and suspect. But the transfer case itself acted funny and I don't know if it shifted itself, or if the electronics did. Either way, I have little confidence given that it was able to pop into neutral on its own.I think I'm going to pursue a NP241C swap. This could have failed anywhere, all so we could have a button instead of a lever! (And maybe a couple more cupholders?) Thankfully, it failed at the top of the driveway. NP241C shouldn't wear a hole in itself, either.I appreciate everyone's help so far!Does anyone have more detailed swap instructions than this post? <a href="https://www.gmfullsize.com/posts/3226090/" target="_blank">https://www.gmfullsize.com/posts/3226090/</a>It seems fairly straightforward at first glance.</blockquote>