Keeping the wheel pressure mon. sys. w/new wheels

**Sudden** · 05-29-2009

Has anyone put on new wheels and kept the wheel pressure monitoring system?

**carl06GT** · 05-29-2009

you have to either take them out of your stock wheels or buy a new set which is exspensive. mine comes on when i first put my 20's on and i just go to the TPMS and reset it and it never pops up again

**Sudden** · 05-29-2009

Thanks, I was hoping it would be like that. I want to keep my old set of wheels and tires for Winter. I'll have to decide be them if I want to spend the money for another set of sensors.

**carl06GT** · 05-29-2009

i found a set on ebay one time for like 100 bucks but that was the only time i seen them

**carl06GT** · 05-29-2009

there is four used set on ebay right now. just got to ebaymotors.com and type in grand prix TPMS in the search key and they will come up

**Sudden** · 05-29-2009

They look like they bolt to the wheel through the air valve hole. My wheels look like regular valve stems.

I wonder if mine are the ones that the computer compares the rotation of the tires to set the low tire pressure warning? Mine isn't like my daughter's Cobalt that tells her the pressure of each tire.

**carl06GT** · 05-30-2009

well the ones on our car just tell us which one is low after it passes a certain point i believe

**Sudden** · 05-30-2009

Originally Posted by carl06GT

well the ones on our car just tell us which one is low after it passes a certain point i believe

Yes, that's what mine does. The manual says when 1 tire is 12 lbs different from the others. It is close to that. I've used it more than a couple of times.

**carl06GT** · 05-30-2009

knock on wood i havent had mine pop up

**Iroccamarofan** · 05-30-2009

What year is your car.... Gm used several types of tpms in their cars. Some of the early systems were indirect systems that rely on the wheel sensors. Through the abs system it can tell if a tire is low based on the rolling diameter of the tire. Then some of the systems use a bolt in system which is a part of the valve stem. The valve stem is alum. Don't use metal caps on these because they currode on and when you remove them you snap the stem . Most recently gm used a rubber style snap in valve stem, but it looks bigger than the regular standard rubber stem. The tpms sensor then bolts to the base of the stem inside the wheel.