ODI's investigation of the Cadillac Srx glass roof did not identify any defective manufacturing process, design, or quality control issue with the Srx glass roof system.GM believes that the most likely cause of breakage is stone or sharp object impact against the glass.the investigation included a peer multi-vehicle analysis.that analysis found that other vehicles with large glass roof systems experience random stone/object impacts and broken glass panels.the incident rate for the subject vehicles did not stand out in this analysis.the Srx ultraview power glass roof consists of up to three tempered glass panels surrounded by metal trim around the perimeter of the roof structure.the main front panel is a large movable glass panel residing over the first and second row occupants.the middle non-movable panel is not accessible from the inside.the rear non-movable panel is an optional panel (ultraview plus option) and is viewable from the inside.a safety-related defect has not been identified at this time and further use of Agency resources does not appear to be warranted.accordingly, this investigation is closed.the closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist.the Agency will monitor this issue and reserves the right to take further action if warranted by the circumstances.see summary report for additional information.
