Thanks JTee!I bought one of the *cheap* ones off Amazon. They are a more stiff type of plastic material and likely will crack in time.
GM upgraded the new part sometime about 2014 with a softer rubber-like material that seems to now hold up better.
But the cheapy will probably last +2 years. Heck, you can buy 4 to 6 of the cheap ones vs 1 GM part. So. . . depends on what ya want to do.