My DEF fluid is leaking down or running down the side of my truck by the full cap. Has anybody else had this problem? The cap is put on tight.
So how was it corrected..by the dealer or could you do it?I have noticed mine leaking, just under the fuel door. Just notice a bunch of dried def under there. But I did just get it back from the dealership where they did an oil change and filled my def tank so some spillage may have occurred.
I had this same issue right after I bought my Colorado a few months ago, initially thought salesman spilled some when he filled it up. It kept appearing and spilling so I went back to the dealer and showed them. They looked at me and said “that’s weird” Dropped it off for them to look at it, turns out there’s a technical service bulletin out on it, GM knows about it, it’s an easy fix. It’s been a while but I think there was a problem with the way some were mounted/sealed.My DEF fluid is leaking down or running down the side of my truck by the full cap. Has anybody else had this problem? The cap is put on tight.