I've heard of cases where people have talked to the Service Manager about a large failure, out of warranty, and the Service Manager has gone to bat for them with Chy. and asked the factory to help with some of the repair costs. I don't know if they help with parts or labor, but if your a good customer they might try to help you out. I wouldn't hide the fact that you have changed gears and I wouldn't lie about it but I wouldn't go in the door shouting about it either. It's worth a try---don't hurt to ask.
Jay
'Goodwill' repairs... Rare, but they do happen.
Not sure if this applies, but my 09 had a lifetime powertrain warranty to the original owner,,,
Wouldn't cover aftermarket parts, but perhaps it was something in the t-Case that caused it, and had nothing to do with your parts,,,
Just be honest,
don't be a ****, and
expect nothing. Like PullYa said,,, Worth a try.