Should I buy new TPMS sensors?

[06_GMC]

I'm getting new tires and I constantly get service tire system alarms and low pressure alarms. I was wondering if I should just get all new sensors and have them installed when they put on the tires? how do I know which sensors my Tahoe has? Thanks in advance.

[newdude]

Have you gone to the dealer and have it looked at yet? Tire pressure relearn, or test the current sensors? Before you throw any $$$ at it I'd get the system looked at first.

 

The sensors are the style held in by the plastic nuts. The ones with the rubber stems, last I recall don't work with the older systems, like the one in the trucks like your year.

[Ianf]

If it is an '06 as per your signature, then I would definitely replace them if you want the light off for a long time. They are coming up on 7 years old and the internal batteries in the sensors should be getting weak and will cause you issues shortly if they haven't started to already.

[06_GMC]

No i am talking about the 04 tahoe in my signature. The 06 GMC is sold yeah i've had the system reset and reprogrammed before but i still get failures. Now how do i know which sensors to buy?

[Gurrzt]

Yes have the shop replace all the sensors when you have the tires installed. The GM sensors operate @ 315MGH, and the shop should have a scan tool to load the new sensors into the vehicles computer. VDO makes the sensors mounted to a metal valve stem. I have never been a proponant of rubber valve stems, just dont like them.

[waumo1]

Most TPMS are rated for 10 years on the batteries so I would definitely replace them.