GM RECALL

The site I have been refering to lists service bulletins and recalls, the latche's are a service bulletin and the top seperation is a recall, both of the problems will have similiar noise coming from the tops, the site also lists complaints from owners.

I am also getting the snapping/popping noise comming from my "glass top", when I called the local dealer about the "recall" they were clue less.  Looks like I will have to bring the service bullitine with me to the dealer after I get the car out of winter storage.