This morning I opened my trunk to my 2055 Pontiac Sunfire and when I went to close it the black casing around the latch on the frame of the car came off so I put it back on and when I went to close the truck it will not latch. It is almost like I need to pull on something so that it will latch.

You may have inadvertently locked the latch when putting the plastic piece back on look at the latch mechanism and where the latch locks on the bar put a screw driver in the latch mechanism and then operate the lat to open it should open up then try shutting the trunk lid do it with the plastic piece off first to be sure thats the problem because if you have the plastic piece on you may make it nearly impossible to open it up. Then if it works put the plastic piece back on then make sure the latch is open and then close it does it work? if yes you did it if not write back to me for more help. Thanks for using fix-ya.

This happened all the time on my 03, take two plyers, one in each hand and put them both onto the u-bolt (the part that the latch latches to) and pull up then try and close the trunk, sometimes the latch pushes that ubolt platform down so it cant grab