The rear plastic bumper cover is buldging on each side of the quarters on my 99 obw. It looks like there is a clip inside but i just cant figure this out!! Car looks great except for this, anyone removed or fixed this before? The manual just says "remove clips". Yeah, thanks. Thats helpful. Like saying "Remove engine". Not even a decent pic.

Most likely the car was hit at some point.

 

Jack the car, remove the rear tires.

Remove the mud flap bolts

Remove the 10mm bolt inside the rear fender well towards the front corner of the cover

Now you can pull the sides out and see what is up with the clips. They snap on a pin. If the pin is missing or the clip damaged they will stick out.

 

If there is damage, you can see it inside the rear hatch, pull the L&R side carpet and pull the round covers for the bolts. Pull the bumper by removing the 2 bolts on each side and slide the complete bumper off.

 

You may have to pull a few bolts, plastic pins on the bottom of the bumper to frame as well.