I could send you a couple of pictures I just took of where I drilled the hole in my intercooler. Do you have a smart phone I could text them too? Basically, if you look at the bottom bracket on the drivers side it curves upward toward the mounting bolt. Just before it curves up the edge is cut forward making it narrower. It makes sort of an opening. Right next to this edge is the air deflector. If you pull the deflector forward you have an opening (almost as if by design1!) where you can see the bottom rear of the CAC. It is only a small opening so you can't get at it with a drill. I used a pin vise to reach up through the opening to "drill the hole". I guess you could also loosen the bottom bracket, but I had a pin vise so it was easier to use it and not do any disassembly.
Try this -- block the very bottom of the intercooler with a piece of cardboard 3-4 inches high and 16-17 inches wide. This allows warm air to enter the intercooler at the bottom and reduces the chance of condensation build up. I drove my truck this way for a good while with no incident. [ months ] before installing this the symptom occurred every week. After removing the cardboard the symptom occurred within a few days. If you need to drive it get it back and put on the cardboard until they can get the part.
Hope this helps.