PTO should works in reverse. The problem is with any transfer case/ PTO option is you'll be driving it from the coast side, so longevity may be a concern.
For the Tahoe, GM like to keep the same bellhousing. The SBC kept it for 50 years, and they only changed it slightly for the LS series. You'll want to confirm everything, since I've not messed with those much lately. This is the factory solution for your problem though.
