1999 Pontiac Grand Am • 250,000 miles

If I take my car to a pontiac dealership to have the intake manifold gaskset replaced, what should I expect to pay? I have read former questions on this site, and see my problem. I have a p0507 code and trac light goes off and on form time to time. I replaced the idle sensor, code comes back.
May 24, 2013.

There are no Pontiac delaers anymore but nay gm dealer should be able to fix it. But check for a vacuum leak and clean throttle plate an diac hole with choke cleaner first.

May 25, 2013.