GM Service Manual Online
For 1990-2009 cars only

Sunroof Water Flow Direction (Sedan)


Object Number: 1344636  Size: MF

The sunroof drain channels are located on the right and left sides, and the front and rear of the sunroof module. The front half of the side channels and the front channel direct the water to the front sunroof drain hoses, routed down the windshield pillars to the A-pillar, and out the underside of the vehicle.

The rear half of the side channels and the rear drain channel direct the water to the rear sunroof drain hoses, routed down the D-pillar and out the rear lower quarter panel behind the rear bumper fascia.

To ensure that the water management system performs properly, ensure that the drain channels and the rear drains are clean and free from debris.

Sunroof Water Flow Direction (Extended Sedan)


Object Number: 1344638  Size: MF

The sunroof drain channels are located on the right and left sides, and the front and rear of the sunroof module. The front half of the side channels and the front channel direct the water to the front sunroof drain hoses, routed down the windshield pillars to the A-pillar, and out the underside of the vehicle.

The rear half of the side channels and the rear drain channel direct the water to the rear sunroof drain hoses, routed down the D-pillar and out the body rear end panel behind the tail lamps.

To ensure that the water management system performs properly, ensure that the drain channels and the rear drains are clean and free from debris.