I have a brand new set of front and rear Ecoological bumpershellz in Gloss white close to Summit white match. They are for 1500 sierra 14-15 and have parking sensor holes.
THey are 505.00 for the pair from their website. Mine are brand new with instructions and still have the protective film over the paint. I am planning to trade my truck in and won't be installing these.
My loss is your gain, 395.00 bucks for both!
Website of product here. Front is 305.00 and rear is 201.00
https://www.ecoological.com/gmc-bumper-covers.html