The adhesive bonding the roof panel to its frame may separate. Partial separation could result in one or more of the following: snapping noise over bumps, wind noise, poor roof panel fit, roof panel movement when a door is closed, or a water leak. Total separation while the vehicle is in motion could result in personal injury or property damage. Dealers will install a new roof panel to correct this concern. This recall is expected to begin during April 2010. The General Motors recall number is 90230.