TPMS Service Light

[Foxwerks]

Good morning ladies/gents, I have a issue with my TPMS. Usually once in awhile the sensors on the tires wont show the tire pressure, if I drive around it comes back and resets it self. This time though it’s been a couple of days without it resetting it self. Only the rear left tire pressure is showing and the rest unknown. I remember the GM tech using a tool to reset the sensors, I was wondering if this would fix the issue.

I also see a tool on Amazon, would this work? Thanks for the help in advance.

[/https://www.amazon.com/VXDAS-EL-5...rnid=2661617011&rps=1&sprefix=gm+tire+&sr=8-3

 

[ElDobro]

The tool is usually just to let the car know which sensor is where. The batteries may be worn out in the sensors.

 

[NORTON]

The tool is a "Relearn Tool" to tell the car system which is which.
I used my cheap amazon tool just yesterday to put my stock wheels with new tires back on the car for the coming snow. :|

You may be experiencing the TPMS sensors at the end of their battery life.
New ones are available on amazon also. That's where I got mine for my summer wheel set.
You don't have to pay tire store prices for new sensors. But you do have to pay their prices to have them installed.
Either way, you should keep this safety system working on the car.

 

[MoldyWalnuts]

i have a similar issue, my passenger front and driver rear tire pressure is not showing. nothing to do with any tire replacements, i think it's just that the batteries are low in these 2 sensors. did anyone replace these tire pressure sensor batteries and what kind/type are they? i don't think the sensors themselves are bad... thanks

p.s. haven't posted here in a while so here's an update... SoCal location. i'm over 81K miles on my '16 2LT. on a second front tires change. still riding on original rear tires and all around original brake pads/rotors. no issues, just had to add a bit of orange GM coolant as it was low (evaporation? no leaks), and the range is a solid 80 miles, maybe a bit more if i drive nice and easy.

 

[Infinion]

i have a similar issue, my passenger front and driver rear tire pressure is not showing. nothing to do with any tire replacements, i think it's just that the batteries are low in these 2 sensors. did anyone replace these tire pressure sensor batteries and what kind/type are they? i don't think the sensors themselves are bad... thanks

p.s. haven't posted here in a while so here's an update... SoCal location. i'm over 81K miles on my '16 2LT. on a second front tires change. still riding on original rear tires and all around original brake pads/rotors. no issues, just had to add a bit of orange GM coolant as it was low (evaporation? no leaks), and the range is a solid 80 miles, maybe a bit more if i drive nice and easy.

The TPM sensors use a coincell, CR2050 rated for high temperatures and they should run down over 6-8 years. However, they are not typically serviceable because the battery and circuit board are both fully potted for a harsh environment (vibration heat moisture).

These sensors could last longer if a piezoelectric energy harvester supplied power to run off of vibrations, and there have actually been several papers outlining implementation of such a circuit. However, no company has taken the leap to make "forever tpms sensors".

TPMS sensors are pretty expensive to replace at a shop, about $50-60 per sensor in my experience. There is some recourse, however. You can buy compatible chinese knockoffs of the ACdelco models that will only ring you $60 for a full set of 4 sensors. Just make sure you find a compatible GM sensor and test them with the car before you mount them on a wheel rim and tire.

 

[MoldyWalnuts]

The TPM sensors use a coincell, CR2050 rated for high temperatures and they should run down over 6-8 years. However, they are not typically serviceable because the battery and circuit board are both fully potted for a harsh environment (vibration heat moisture).

These sensors could last longer if a piezoelectric energy harvester supplied power to run off of vibrations, and there have actually been several papers outlining implementation of such a circuit. However, no company has taken the leap to make "forever tpms sensors".

TPMS sensors are pretty expensive to replace at a shop, about $50-60 per sensor in my experience. There is some recourse, however. You can buy compatible chinese knockoffs of the ACdelco models that will only ring you $60 for a full set of 4 sensors. Just make sure you find a compatible GM sensor and test them with the car before you mount them on a wheel rim and tire.

thank you!

judging from how involved a battery replacement would be from this video,



(not to mention the cost of the new batteries)

i think replacing the whole unit is the way to go. eBay has a set of 4 for $15 here,

https://www.ebay.com/itm/204613846150

(not sure how long they'll last though)

and here's a good video on replacing the whole sensor,



i do the same to break the bead but use a "baby car seat" tether strap around the scissor jack and tire/wheel instead of using the weight of the car. a bit safer that way, i think.

maybe you already know this but here's a tip for avoiding balancing new tires after installation. if the old tire/wheel was balanced don't remove the old balancing weights, just wash/clean the wheel from dirt after you remove the old tire. install the new tire with the red or yellow spot next to the air valve. these spots on the tire indicate the lightest place on the tire and by installing the tire with the spot next to the air valve you are installing the tire's lightest place next to the wheel's heaviest place, at the air valve. i've never had to balance my new tires after following this procedure, they came out already balanced this way. the ultimate test is to drive at freeway/highway speed with no wheel vibration.