Power Sunroof When Operated from Vent to Close One Side Will Drop Before the Other
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Parallel positioning of the window track guides or lift mechanism and cable is crucial to the proper function of the system. If the guides are misaligned, refer to Sunroof Track Timing/Synchronization (PES) .