Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I am Mike, welcome. I'm reviewing your question.
I had to sit in the drivers seat of my Ford f350 holding the garden hose out the window and directing water all over the roof and sunroof area until I found the leak. I had to drop down the headliner just a bit to see exactly where the water was coming in at.
I suggest you just do the same.