The other day we took in the Traverse to get some work done oil change, etc. It also needed a new rear wiper blade but they didnt have it so we had to order it. When it finally did come in, my dad sent my mom and I to go pick up the wiper. When we went in to pick it up we just got it and walked right out. My question is are wipers covered under warranty or did we have to pay for it? I want to know because we are afraid to go back and them call the cops because we didnt pay for the wiper! ???