Diesel leak in '03 Duramax

[jccDuramax]

My '03 Duramax ran without any problems until I noticed white smoke out of the exhaust at about 60K miles. As we all know, GM had an issue with injectors, so the dealer replaced all my injectors ($5,500 @ no cost to me). Within a couple of days, I had diedel leaking out of the engine compartment and it got worse every day. The dealer ordered all new fuel lines and once replaced the leak appeared to stop. Now that my camping season is here (desert trips) I've been towing my 10,000lb 5th wheel and the diesel leak has resumed. It mainly leaks when i'm towing and almost nothing when i'm not towing. I've taken into the dealer and they're going to look at it again, but I'm starting to get concerned about this. Has anyone seen this in their truck?

 

B.T.W. I have used a Hypertech Power Programmer almost from day 1 and had set it to the #1 power setting and adjusted for larger tires. In the last 2 weeks I set it to the number 2 power setting and maybe it's a coinsidence but it started leaking sometime after that.

[GM-Tech]

External leaks are pretty rare on these things. Injectors leaking into the engine are another story.

 

You just need to find the source of the leak. There's nothing common.