3rd party GM accessory website

Do any GM Dealers use Insignia or another 3rd party accessory website? Or is everyone just letting GM put whatever they want out there on the Cobalt-run Dealer page?
My problem is that Insignia has become a real P.I.T.A. to monitor and correct all of their errors, but I'd have to start all over with the Cobalt site and it's full of errors too...
My problem is that Insignia has become a real P.I.T.A. to monitor and correct all of their errors, but I'd have to start all over with the Cobalt site and it's full of errors too...