If you are referring to the horizontal vinyl like trim, just grab it near and end and pull it off. There is a lip on top and bottom holding it onto a metal strip that Is screwed to the wall.
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2019 Ram 3500 Limited w/ Max Tow pkg
2005 Cardinal 33LX
2014-3950, Full Paint, 17.5" tires, 370W solar, 3100W Magnum inverter w/ AGS, 7500w diesel generator, Micro-Air Easy Start 364 (x3) SOLD!
I am talking about the horizontal trim but it appears to be metal not vinyl. It looks like it is pinched behind the door trim, water heater case and baggage compartment trim. I can see a caulk line along the top.
I am hoping that I don't have to pull the doors and water heater to remove this.
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2014 Voltage 3200
2013 Silverado 3500 DRW 4th
2005 Yamaha Royal Star