I received this item and the part ordered was on the box 13534553. The part inside the box had a # of 13519422. So looking up the actual part inside the box on the Amazon search it returns that this part will not fit my vehicle. I almost left it there and just finished the return process,, then i decided to look up that part on the GM site. To my astonishment the part # 13519422 was replaced by part #13534553. I just don’t understand why the old part was in the new part # box. I installed them and day two is going great, would recommend these over the non-GM/ACdelco parts, they are very smooth and quiet.Would have been a 5 star review if this information was already in the description.