NNBS transfer case issues please help

[fortplainman]

found a service bulliten on gmt900 trucks made before april of 2008. snap ring on the rear output shaft was a different hardness rating that they changed and could break. causes grinding/howling/transfer case disengaging under load which my truck would do.

Hopefully that's all that's wrong with it!

Yeah that supposedly was all that was wrong with it last time but coat 2 grand or so to fix lol.

FFB device

 

[PenguinLTZ]

I would walk in there with that bulletin, and have a talk with the service manager. If it is that same issue, and they stuck you with it again, there should be some Customer Policy they can help you out with.