A drain trough encircles the sunroof window panel and water is drained off by the drain hoses located at each corner of the housing. A drain channel spans across the sunroof module at the rear of the window panel and directs water into the trough.

1. Ensure the front drain hoses are routed down the windshield pillars and out the center of the pillar between the door hinges. Ensure the hoses are not kinked. Replace any torn or cracked hose. Refer to Sunroof Housing Front Drain Hose Replacement.
2. Ensure the rear drain hoses are routed through the rear pillars and out of the rocker panel. Ensure the rear hoses are properly routed in the metal roof slot and taped in place. Replace any torn or cracked hoses. Refer to Sunroof Housing Rear Drain Hose Replacement.

If a waterleak has occurred inspect for a plugged drain hose at each corner of trough.

1. Open the sunroof window.
2. To test for blockage, pour a small container of water into the module housing trough. Inspect each corner to confirm the drain hose is draining water.

Caution: Wear safety glasses in order to avoid eye damage.

3. Use compressed air, 35 psi or less to blow out any drain hose that is plugged.
4. Test the system again.
5. If the hose remains plugged, inspect to see it is properly routed and does not have a kink.
6. Remove any hoses that remain plugged. Refer to Sunroof Housing Front Drain Hose Replacement or to Sunroof Housing Rear Drain Hose Replacement.
7. Remove the blockage.

7.1.	Push mechanics wire through the hose to remove the obstruction.

7.2.	Use compressed air in order to blow out any remaining debris.

8. Install the hose. Refer to Sunroof Housing Front Drain Hose Replacement or to Sunroof Housing Rear Drain Hose Replacement.

Inspect the drainage system for disconnected drain hoses. Complete the following steps in order to obtain partial access to the drain hoses and to inspect for disconnected hoses.

1. Open the sunroof window panel.
2. Lower the headliner as needed. Refer to Headlining Trim Panel Replacement.
3. Connect any disconnected hoses.
4. Ensure that the drain hoses are properly routed in the metal roof slot and secured into place.