Error on LCD: Service TPM

[Klint]

About a month ago I started getting "Service TPM" on my LCD I know that menas somethings up with the Tire Pressor monitor but has anyone had this issue? What is it normally? My hummer dealer is 3 hours away so I don't want to take it up there and get it serviced if it's something stupid

[Hummer Guy]

The sensors just need to be reset -- check your tire pressures, and if everything is fine, there shouldn't be too much to be worried about...but the next chance I got i'd get someone to reset the TPMs

[f5fstop]

Have you had a drop in temps? If so, remember ten degree drop equals one pound drop in pressure inside the tire. A 40 degree drop means a 4 pound drop in pressure, and if the tires are not inflated to proper PSI, the system will start signalling you.
Make sure the COLD tire pressure is set at 30 or 35 (depending on the tire), and see if that fixes the problem (I SAY COLD, don't drive on them and then check). If that does not solve the problem, you can try the reprogram, as Hummer Guy suggests, as explained in the owner's manual.

[Klint]

Well I have got a "low pressor warning before" but never a Service TPM the book just says hold the button in and it will go off until I restart my car and it returns. I guess I will add some air today to the tires...

[f5fstop]

Sometimes, and it is not that often, the system will react to multiple low sensor readings as being a problem. If all pressures are ok, do what Hummer Guy suggested. If that does not work, it is time to visit the dealer.

[Hummer Guy]

Originally Posted by f5fstop

Sometimes, and it is not that often, the system will react to multiple low sensor readings as being a problem. If all pressures are ok, do what Hummer Guy suggested. If that does not work, it is time to visit the dealer.

Interesting -- I figured it wasn't low tires because of the "Low Tire" reading -- I didn't know multiple low sensors could cause the "Service TPM"...good to know.