How accurate are the tire pressure readings provided on the Chevrolet instrument panel?

Question

How accurate are the tire pressure readings provided on the Chevrolet instrument panel?

Answer 1

They are decently accurate, remember tire pressure differs throughout the day since temperatures are different and it affects the amount of psi in the tires. Also when you change to a new set of tires the accuracy does tend to go down since it is not the stock tire. After 2-3 years the sensors start to act up and most of them fail.

Answer 2

I actually don't know about the Chevy, but my Volkswagen and Mercedes both have tire pressure monitors and they are with 1/2 pound of my very accurate hand held gauge. I don't see why the Chevy would be much different.  

Answer 3

very accurate if you are running the exact tires specified on the vehicle.

Answer 4

Probably more accurate than the gauge you check the tires with, but they can take a while to update if you add or remove air.

Answer 5

Pressure monitors are very accurate, generally within a quarter of a pound.  But you won't see it on your display since they round up or down to the nearest whole digit.  But they are very accurate.