For those that may be curious: The tire pressure recommended on the door panel sticker is developed from what Pontiac determined was the best balance of ride quality, fuel economy, performance, handling and a few other factors. This number was arrived at based on the OEM tire construction, so if you have a different manufacturer, size or model of tire other than OEM, some of the above characteristics may be different (from OEM) even at the same pressure anyway. It is not necessarily critical to have your tires at the 29psi that RedDevil pointed out. You will want to stay away from over and under inflation, though.
Increasing or decreasing the pressure a couple pounds generally shouldn't be harmful if you desire to tweak the above performance characteristics to your driving habits. My personal opinion is that 90% of drivers wouldn't notice a difference anyway.
Keeping on the subject of this thread though, the TPMS operates the same regardless if you're riding on 5-year-old, stock Goodyear Eagles, or 5-month-old Hankooks. Tire selection shouldn't have any bearing on TPMS operation.