A few minutes after leaving the parking lot of my office, the pressure sensor alarm went off on my 07 Colorado. I continued to drive trying to find somewhere safe to pull over and check the pressure. But before I could stop, the alarm turned off after about 2 minutes. When I finally stopped to inspect the tires, all of them looked fine. After reaching home, I decided to top off the air just in case but the pressure for a 4 were OK. It's been almost 4 days now and the alarm has not gone off. Could this be a bug or something ?