While coasting(foot off the gas) on the highway with the traction control on, my vacuum was 13psi, when I did nothing else but turn the traction control off, the vacuum went up to 19psi. Da ****? Is there something that's vacuum activated in the TCS? It just seems really weird to me, and honestly I don't even know where to start looking for a problem besides obviously the lines but I don't know where the TCS stuff is.