Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
HI Kim, I am Cam.your issue sounds like the drains are plugged. On the sunroof, the track around the bottom of the opening is a trough. There is a drain from each corner to drain water to the outside of the car. What happens is over time the drains plug up and the water runs into the vehicle. to clean the drains, first open the sunroof and clean any debris out that you see. Then using low pressure compressed air, try to blow the drains out. Finally, use something like weed eater string to fish down each drain hose and see if you can free any debris.If this does not work then we need to remove trim and visually inspect and repair the drains. Most times though these steps clear the drains and take care of the issue.
So have you checked visually the lines where they attach and exit the vehicle? IS the seal of the glass torn or worn to allow more water than the system can handle?