If your bumper has a built-in trailer light remove the fasteners that secure it to the bumper. Then disconnect and remove the trailer light connector and harness Finally remove the license plate bulb socket(To make removal easier,pretreat all fasteners with a spray rust penetrant)
2.Remove the bumper bolts and brackets
First remove the license plate and the at the back. Then remove the bolts connecting the to the truck chassis. Finally, remove the bolts that connect the left and right bumper brackets to the frame brackets.
3.Install the new bumper
Install the new license plate light assembly first, then the new bumper.Finally the trailer light connector and harness