HomeAll RepliesReply To: 2005 yukon Reply To: 2005 yukon Sponsored February 18, 2019 at 12:29 am #527372 Cjr2007Participant I had the same issue. I had to change the plastic connection in the hoses and the cap because they all had pin holes in them and once I did that I have had no more over heating Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored