Outlaw372

Ok guys, I have a 2016 GMC Sierra as well. I bought it used with about 40k miles on and it had the same hesitation during acceleration that everyone is talking about. I went to a dealership in Chandler, OK and I told him about the problem. The service guy said immediately stated "transmission fluid". I looked at him like he was crazy. He proceeded to tell me that whatever kind of tranny fluid they put in it come from the factory breaks down really quickly and that they are replacing it with a high grade Mobile One fluid. I told him that didn't sound right that tranny fluid would cause this and he said they have done probably 200 of them with the same issue. So, I took it in, still very skeptical and turned over my keys. About an hour late, I paid the $275 and he gave me my keys back and he told me that "it might take about 500 miles for the problem to fix", at which point I thought that was his out. Well, I got on the interstate and low and behold, NO HESITATION. I haven't felt the hesitation at all, at anytime I've accelerated.