Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to all brands and models, model years 2005 - 2019.

  the passage

  All All 2005 - 2019

• Customers may report intermittent sunroof operation, binding, noise, auto-reverse and/or water leaks.

  the passage

  Some customers may comment on intermittent sunroof operation, bind, noise, auto-reverse, and/or water leaks.

Possible causes

• Dirt and debris may collect on the sunroof seal or in the tracks, affecting operation, causing noise or plugging the water drainage system.

  the passage

  Dirt and debris may collect on the sunroof seal or in the tracks that could cause an issue with sunroof operation, noise or plug the water drainage system.

Repair

1. Open the sunroof, remove any obstacles or loose debris, and verify that the module drain holes are not plugged.

   the passage

   Open the sunroof and remove any obstacles or loose debris. Verify that the module drain holes are not plugged.

2. Wipe the sunroof seal and the roof sealing area with a clean cloth, mild soap and water; do not remove the grease from the sunroof.

   the passage

   Wipe the sunroof seal and roof sealing area using a clean cloth, mild soap, and water. Please do not remove grease from sunroof.

Caution

• Some replaced sunroof module assemblies were tested and found that simple cleaning of these areas would have repaired the condition without replacing the module.

  the passage

  Some sunroof module assemblies that have been replaced, and sent back to the warranty parts center, have been tested and found that simple cleaning of these areas would have repaired the condition and prevented the replacement of the sunroof module assembly.