Hi Folks. I'm hoping that someone can help me out. The dash on my '98 vert keeps saying that the pressure on my left front tire is low. Due to the colder weather I've been trying to keep the psi slightly over 30psi. When I check the pressure it says that it's 31.5psi. I'm at a loss. Plus, although it's only been happening for about a week, it's seems to be intermittent. Does anyone have any idea what's wrong???