Re: Cleaning under rear seat, seat removal
You can find diagrams here: WK2Jeeps.com - 2011-2018 Jeep Grand Cherokee menu page
Go to interior trim removal and search with term "rear seat". It took me about 30 seconds to find. Which pdf you search will depend on model year of your JGC.
Mine: 2014 Overland 4x4 V6, ORA II, billet silver/black, Michelin LTX M/S 2's, MaxCare Lifetime, delivered 4-13-'13
Wife's Jeep: 2017 Compass Latitude 4x4, redline pearl coat/black, delivered 4-25-'17