Still waiting on part to repair A/C. I have a 2015 Sierra & Yukon and both A/C's have failed. Upon a quick internet search it's apparent this is a epidemic problem that GMC is failing to address. I guess we'll just wait for the class action lawsuit to join in since GMC is not willing to stand behind their products. Over $100,000 in 2 vehicles and having to deal with both vehicles A/C failing and automatic door locks failing.