Valve stems / TPMS parts ?

[flyboyron]

I am confused.

My 09 Silverado has the TPMS on the wheels.

 

I am taking my truck in for new tires.

My rule is every time I put on new tires, I replace the valve stems.

 

The repair shop is giving me the option of changing the TPMS stem.

 

I have no idea if the valve stems are part of the TPMS or are they separate parts?

 

If I change the valve stems can I reuse the current TPMS parts there or do they have to be replaced?

 

Maybe a good explanation on the TPMS system would be in order.

 

Any help would be appreciated.

 

[Ianf]

The TPMS sensor mounts on the Valve stem via a screw. On both types on valve stems (metal and rubber) you can replace the stems and keep the TPMS sensor. If these are your original sensors on an '09 I would consider replacing them as well at this point as the batteries should be close to the end of their life. The tire shop can test the battery strength but it is not a very accurate process. The batteries are NOT serviceable. Lookup up sensors on amazon and you will see what them stems and TPMS sensors look like and how they mount.

[flyboyron]

Great, Thanks.

 

I just went on Amazon and checked out the sensors/stems there.

 

I will have both the stem and sensor replaced. I did not know there was a battery in there and they say they last about 10 years.

Mine should be reaching that lifespan within another year or so.

 

It is amazing that the dealer keeps customers in the dark about these things and will just say you need it and charge you for it.

 

I think there should be a class for drivers, (not mechanics) explaining what a lot of these type of parts are and when and why they should be replaced.

 

 

Thanks for the help.