07 G6 convertible top problem

[pngoat]

When retracting the top it stops half way through the process. It closes OK. At the start of the process the windows go down and the deck lid opens. Then the top stops half way through the retraction process. The pump motor also stops. Some times the "top not secured" message is displayed. The message goes away when the top is closed. Anyone have any ideas why the top would stop during the retraction process? Any help appreciated. Thank you.