Here's from the shop manual for the rear bumper cover:
Rear Bumper Fascia Replacement
Remove the backup lamp socket assemblies from the backup lamp housings, if applicable.
Remove the lower fascia push-pins.
Remove the screws from the rear wheelhouse flanges.
Remove the upper retaining bolts from the back of the fascia.
Remove the fascia from the vehicle.
Position the fascia to the vehicle impact bar.
Notice: Refer to Fastener Notice in Cautions and Notices.
Install the upper retaining bolts to the fascia.
Tighten the bolts to 2.5 N·m (22 lb in).
Install the screws that retain the fascia to the wheelhouse flanges.
Tighten the screws to 4.5 N·m (40 lb in).
Install and fully seat the lower push-pins.
Install the backup lamp socket assemblies, if applicable.
Here's the rear impact bar:
Rear Bumper Impact Bar Replacement
Remove the spare tire carrier.
Remove the rear fascia.
Disconnect the trailer/towing receptacle electrical connector.
Rotate the trailer/towing receptacle assembly counterclockwise and remove from the vehicle.
Remove the 4 rearward bolts that retain the impact bar assembly to the frame rails.
While an assistant holds the impact bar assembly in place, remove the remaining 2 retaining bolts.
Remove the impact bar assembly from the vehicle with an assistant.
Position the impact bar assembly to the vehicle with an assistant.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the bolts that retain the rear impact bar to the frame.
Tighten the rear impact bar bolts to 364 N·m (268 lb ft).
Install the trailer/towing receptacle assembly to the bracket and rotate clockwise until fully seated.
Connect the trailer/towing receptacle electrical connector.
Install the rear fascia. Refer to Rear Bumper Fascia Replacement .
Install the spare tire carrier. Refer to Tire Hoist and Shaft Replacement .