Vancouver twice trailed by a goal, but the Canucks put together three straight scores to take command.
Jason Garrison and Sedin scored 1:46 apart in the third period with Sedin's goal coming 4:18 into the stanza.
Brenden Morrow brought the Stars within one with 13:53 still to play, but the Stars could not get another shot past Cory Schneider.
Schneider made 22 saves while backup goaltender Cristopher Nilstorp surrendered all four goals on 22 shots.
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