Not sure how useful people found my last DIY guide on how to remove the front grill/replace front badge. That DIY can be found here: http://www.kia-forums.com/2014-sorento-forum/137905-diy-front-grill-removal.html
Anyhoo...here is my short guide on the removal of the rear tailgate trim and replacing the rear badge. This DIY is also useful if you want to install your own rear backup camera in the OEM location.
As always, PLEASE PROCEED AT YOUR OWN RISK. If you do not feel comfortable, do not attempt. Nobody here on the forums will be responsible if you mess up and damage your vehicle due to your lack of experience/skills.
WHAT YOU NEED
1. Mini wrench (as described in my previous DIY) that attaches to a 10mm hex socket
2. 10mm hex socket and wrench
3. Flat head screwdriver and a normal Phillips screwdriver
4. Box or bag to keep all the screws when you detach the grill
5. Bath towel
6. OPTIONAL - mechanic's or knit gloves
7. OPTIONAL - Aftermarket "K" Badge (150mm is correct size and currently only available from Loden)--if you want to remove the OEM badge and replace.
8. OPTIONAL - 11 pieces of trim moulding clip KIA Part #87756-2E000 . You can buy on Ebay for $6-10. These are to replace the mounting clips you will likely break when you remove the rear tailgate back panel. You can still install back the tailgate back panel with broken clips as the panel is held on by seven bolts as well. But having these clips would mean you can be sure they are held securely and tightly to the tailgate.
ESTIMATED TIME NEEDED
For your first time, budget about 45 minutes to an hour to complete.
Flatten you rear seats down so your cargo area is flat and you can load the trim into the back of your car as you pull them off. Place a bath towel across the rear deck to cover the rear "latch" and to protect the rear bumper from scratches.
Use a thin flat headed screwdriver to pry off the upper trim. This trim piece is held on by white clips and will come off easily.
This is what the trim piece looks like once it is removed.