Sunroof Water Leak – 2007-2008 Buick GMC Saturn

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08207

2008 model year Buick Enclave; 2007-2008 model year GMC Acadia and Saturn OUTLOOK vehicles equipped with a sunroof may have a condition in which water is not properly drained away from the sunroof.

If this condition were to occur, water may enter the interior of the vehicle and dampen the carpet, upholstery, and other interior components.

Install drain tube extension assemblies, and ensure that the water drains properly.

Involved are certain 2008 model year Buick Enclave; 2007-2008 model year GMC Acadia and Saturn OUTLOOK vehicles equipped with a sunroof and built within these VIN breakpoints:

Parts Information

Service Procedure

Important: Before lowering the headliner, please perform the following steps to avoid damage to the interior trim.

1. On the assist handle, use a small screwdriver to open both screw covers by prying carefully from the inboard edge. Remove the screws.

2. On the “A” pillar and “D” pillar, use a small screw driver to open the screw cover by prying carefully from the bottom edge. Remove the screws.

3. On the “B” pillar and “C” pillar, use a small screw driver to open the screw cover by prying carefully from the top edge. Remove the screws.

4. Remove the partition hooks by twisting counter clockwise and remove the screws, also remove the bolt under the armrest.

5. Before lowering the headliner, remove the screws inside the roof air deflectors.

Add Sunroof Drain Hose Extensions

Extend both middle drain tubes by adding sunroof drain tube extensions.

1. Lower the headliner following Service Information procedures.

2. Add a tube assembly (drain extension) to each middle sunroof drain and install the clamps to the module drain spout.

3. Add a tie strap to both middle-connector to module drain spout in the location shown and clip off excess lead with wire snips.

Important: Make sure there are no dips in the hose after the extension has been added. Refer to the illustration. In some cases, it may be necessary to trim off some of the drain tube to eliminate the dip in the drain tubing.

4. The drain hose should be straight with a slight downward angle to the rear of the vehicle.

Check Drain Hose Routing Between the “B” and “C” Pillar for Proper Routing

Figure 1 — Incorrect Routing

Figure 2— Correct Routing

1. After installing the extensions, make sure that the hose is routed in back of the air bag bracket. Figure 1 is the incorrect routing; Figure 2 shows the correct routing.
2. Make sure that there are no bends pointing upward in the drain tubes.

Check All Drain Hose Connections and Add Tie Straps

1. Check the front and rear sunroof drain hose connections to make sure they are fully seated and add a tie strap to each front and rear connection. Clip off excess lead with wire snips.
2. Reinstall the headliner following Service Information procedures.

Modify Front Drain Hoses

1. Remove the “A” pillar trim and defroster outlet grille to gain access to the end of the drain tubes.

2. Remove the rubber grommet at the end of the drain tube.

3. Using a light-duty X-Acto knife, carefully remove the cross hatch inside the grommet and reinstall. Another solution is to utilize a 3/8 in spot weld drill bit to remove the cross hatch.

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