Anyone know where to get an exploded parts diagram of the factory sunroof? I have seen reference to sunroofdoctor.com...but what brand, model, etc did Chevy use in the Blazers....especially the 2002 models?

Got some broken pieces in mine and beginning the research on it.

Thanks

UPDATE: Well sunroofdoctor.com does sell a few parts, price not bad, and states that full instructions are included.....
Anyone buy these parts from here? And could tell me how the instructions are? States that the entire assembly must be removed....has anyone done this and could tell me their experience?

My sunroof works fine...but there is a metal piece that goes across the back that stops the interior cover from going to far into the roof...and it keeps coming loose and then it rattles. The plastic blocks that has the screws for this piece is what appears to be broken and these are included in the kit from sunroofdoctor.com.