If its still moving and not making noise, you might be alright. I'd put the diff back in and go, but I'm a cheap b@stard. Might not hurt to have a t-case located, as a plan B.
Escaldes and denalis are all 3.73. you can grab a 4.10 out of a Silverado/avalanche/Tahoe/suburban 4x4 and switch the pass. Side axle tube, with your awd style axle tube. That's the only difference.
On the t-case, as long as it was an NP3 optioned (not NR3) it's a direct replacement as well.