A drain trough encircles the sunroof glass 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 glass panel and directs water into the trough.

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

If a waterleak has occurred, inspect for a plugged drain hose at each corner of drainage system.

1. Open the sunroof window.
2. To test for blockage, pour a small container of water into the module housing drain trough. Inspect each corner to confirm that the drain hose is draining water.
3. Use compressed air, not more than 241 kPa (35 psi), to blow out any drain hose that is plugged.
4. Test the system again.
5. If the hose remains plugged, verify that the hose is properly routed and does not have a kink. See Drain Hose Routing above.
6. Remove any hoses that remains plugged. Refer to Sunroof Housing Front Drain Hose Replacement and to Sunroof Housing Rear Drain Hose Replacement .
7. Remove the blockage using the following steps.

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

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

7.3.	Reinstall the hose. Refer to Drain Hose Routing above.

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

1. Open the sunroof glass panel.
2. Withdraw the headliner from around the sunroof module.
3. Remove the power sunroof switch. Refer to Sunroof Switch Replacement .
4. Lower the headliner as needed. Refer to Headlining Trim Panel Replacement in Interior Trim.
5. Connect any disconnected hoses.
6. Verify that the rear drain hoses are properly routed in the metal roof slot and taped in place.