07 trailblazer LS tpms
 

I had the tire light come on only when cold out. Drive a few miles and it would go off. It was time so I had 4 new tires installed. Still does the same thing. It is winter in Wi and cold. Only happens when not driven overnight. Once it goes off it won't come on the rest of the day. Just had the oil changed and they checked the tires so pressure should be fine.

tpms
 

I have some of the same issues. The most worthless feature they ever put on vehicles specially if you can never believe them anyway. People are too lazy to check their own pressures.

tpms
 

I put #33 in all 4 tire and haven't had the light come on since. I think the cold had a lot to do with it. The door says #30 for the front but in the cold the pressure drops.

tires
 

Yeah I know the it says 30 for the front and I think that's just for ride comfort but i run 35 lbs all the way around . Still every once in awhile if you get some radio interference the stupid thing will pop on. I can almost guarantee that it will come if my kids have their ipod wifi on , that seems to trigger it off and that's annoying having that stupid yellow light on the dash.