This recall is for the front valve cover gasket on the L67 (3.8L S/C). You have a LHO (3.1L). Sorry to hear about your intake gasket, but just like us with the 3800s your intake gaskets is plastic, and it cracks (terrible design the geniuses at GM thought of). As referred to before make sure to pay careful attention to the torque specs on your bolts. Get a intake gasket set, that is the easiest way to get every gasket you need to do this job.
Good luck!!!