Randall, remove all screw,clips,fasteners securing bumper and then any wiring harness plugs etc. attached to bumper. This is some times a 2 person job, to prevent damage to the bumper, especially when installing. A V-pry tool may be required to remove plastic fasteners easily. Check the attached links,instruction and guides, Good luck
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2012 Dodge Journey Crew V6 3 6 Bumper Components DiagramRemoving Plastic Auto Body FastenersHow to Paint and Install Plastic Bumper Cover Spray Paint
The fuel line will connect the fuel tank and the engine. Fuel pumps are commonly located inside the gas tank. They can be a pain. Check fuel pressure before you start replacing the fuel pump.
Seen this problem Yesterday, we think it is a door blend actuator, but if it is only 5 months old take it back to the dealer and have them complete the warrenty.