From experience, this is what you should do:
Using the diagram you can see above, you will not the the panel UNDER #9 (not the screw that IS #9) is where your seat heater switches and the nearly useless chapstick holding compartment. This piece is held in place by 6 spring tabs. I bought some plastic trim removal tools (any auto store has them and WORTH the money). One that has a 90 degree angle is ideal
Follow the panel down below the chapstick holder and all the way until it meets the panel that has the USB and 12VDC power outlets. You should feel that this is where the two panels are separate. Put the 90 degree trim removal tool in between these two pieces at the VERY CENTER of the panel. This will split the two spring tabs in the back. Either pry or pull the panel with the seat heaters/chapstick holder STRAIGHT BACK (toward the shifter, tailgate, back seat, you..... however you want to look at it). If you do this, those two spring tabs will pop free and then you can use your fingers and effort to keep pulling straight back and free the remaining 4 spring tabs, one at a time.
Bit of a pain but it works.
"Nothing is foolproof when you have a sufficiently talented fool"
'16 Colorado, Summit White, Z71 mud mats, LED everything in cab, LED cargo and B/U lights, LED bed lights, 12VDC outlets bed, Undercover Flex, Pop n Lock for Tailgate, LED front Turn signals, LED Tail lights, LED Rock Lights, 32" LED Light Bar in bumper, Weathertech mud flaps, Rocky Road Outfitters rock sliders, Patriotic Z71 decals, Elite Catch Can, Dash Cam