HELLLPPP....tire pressure monitors

[3Hummer]

i dont have any TPM on my spare and its one of the first '07's. and is it really ment to rotated cuase at hummer when i asked that they so no the spare doesnt get rotated, its your spare and is always your spare.

[H3less]

"the spare doesnt get rotated, its your spare and is always your spare."

My dealer said the same to me, sorry but what if you want to change to a different brand and or size after the first set wears...another gov. mandated thing for a few people that are too lazy to check tire pressure for there own safety!

[Dave92270]

I have 2 sets of tires & wheels, and all tires including spares have the TPM sensor. When I purchased the 2nd set of tires few months ago, dealer insisted on 5 TPM sensors to be installed, basically the spare tire TPM being mandatory (for my '07).. I paid like $55 per sensor at the dealer (new ones, ordered from GM).

[wpage]

I got a set of tpm's for my extra tires off a chevy equinox. They did not sync with the h3 system even though both 06 gm vehicles.

[Mike E]

Yea, somewhere mid-year with the 07 models they dropped the sensor in the spare. If your spare has a rubber valve stem then you do not have a sensor.

Also, make sure you use a plastic valve cap and not a metal one. The metal ones bond with the stem and when you try to remove the metal cap it twists off the stem with it and your buying yourself a new sensor. It sucks when that happens!

[LesC.]

Originally Posted by Mike E

Yea, somewhere mid-year with the 07 models they dropped the sensor in the spare. If your spare has a rubber valve stem then you do not have a sensor.

Also, make sure you use a plastic valve cap and not a metal one. The metal ones bond with the stem and when you try to remove the metal cap it twists off the stem with it and your buying yourself a new sensor. It sucks when that happens!

why would a metal valve stem cap bond to the valve stem ? I ask this because I DO have metal caps on my valve stems and I have not had a problem so far. Is this something that happens over a long period of time ?

[Mike E]

not sure. if you keep the metal caps just snug enough to stay on you should be ok. it appears that maybe the aluminum of the stem coorodes inside the metal cap and they form a "bond" and when you go to twist of the cap, the stem goes with it.