Question About TPMS

I'd relearn it first. If that doesn't work then I would think you jarred the sensor enough to damage the sender in the sensor. Just my thoughts.

Welcome tothe forum, like he said, do a relearn and may need to replace it, then learn it.

fyi, put your truck and any mods in your signature so we can see at a glance what you are driving

see mine below

Relearning it won't do anything. That just tells the truck to monitor that TPMS's signal and what corner it's on. It'll still give the wrong reading. Replace.

Not based on anything, but I would try letting something like 10 lbs out, see what it reads, then bring it back up to 35. Couldn't hurt. Otherwise change sensor

Xcanuk said:

Not based on anything, but I would try letting something like 10 lbs out, see what it reads, then bring it back up to 35. Couldn't hurt. Otherwise change sensor

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i agree sensors are weird. before replacing, i'd be inclined to at least try - i'd go so far as to let ALL the air out of the tire and see what it reads at 0 psig and then inflate and see what happens.

even if it doesnt work - it cant hurt anything to try.

Are you sure the suspect tire is where the truck thinks it is? Have the tires been rotated without reprogramming?

AngryScientist said:

i agree sensors are weird. before replacing, i'd be inclined to at least try - i'd go so far as to let ALL the air out of the tire and see what it reads at 0 psig and then inflate and see what happens.

even if it doesnt work - it cant hurt anything to try.

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I wouldn't go to zero, but that's your choice. By experience, the TPMS are a little slow, I don't know what the reading time cycle is, but there is definitely a delay between the actual psi and what is displayed. I took a minute before it registered my flat when I blew one.

Most TPMS sensors only last 6-10 years. At some point, they need to be replaced. Best time is at tire change time, and best to do all 4 at once unless you want to bust the tires down at 4 different intervals.

16WhiteColly said:

Most TPMS sensors only last 6-10 years. At some point, they need to be replaced. Best time is at tire change time, and best to do all 4 at once unless you want to bust the tires down at 4 different intervals.

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This is the same time frame I was told by my tire shop. Use GM replacements.

You need this when your installing new sensors.

Well, I purchased a TPMS relearn tool. This one:
https://www.amazon.com/dp/B072BK693N?psc=1&smid=ANZLBHPT9XXVK&ref_=chk_typ_imgToDp

I can put the truck in relearn mode, but I don't get any honks when using the tool. Probably a defective/incompatible tool, or maybe an issue with the sensors. This is about as much effort as I'm willing to put into the issue. I'll probably just ignore the TPMS until it's time for a new set of tires, and then install a new set of sensors to see if I can get it working again.

That is exactly the tool I use, works perfectly.

Not sure why you are having trouble

When I first tried to use my cheap Amazon TPMS tool, it didn't work. The battery was dead. It wasn't the same device, but they're all pretty much (if not exactly) the same thing.

That is the same tool I have.. Works great. Only issue was learning to get truck into relearn... after that... every time works no issue.

DirtGuy said:

Well, I purchased a TPMS relearn tool. This one:
https://www.amazon.com/dp/B072BK693N?psc=1&smid=ANZLBHPT9XXVK&ref_=chk_typ_imgToDp

I can put the truck in relearn mode, but I don't get any honks when using the tool. Probably a defective/incompatible tool, or maybe an issue with the sensors. This is about as much effort as I'm willing to put into the issue. I'll probably just ignore the TPMS until it's time for a new set of tires, and then install a new set of sensors to see if I can get it working again.

Click to expand...

Same one I have and the horn works as it should for me.

I'll play around with it a little more this weekend. The tool came without a battery. I stuck a new one in, but it had been sitting in a drawer for a while so maybe it's low. When I press the button only the green LED lights up though, not the red lowbat LED.

Would be nice to know I have a working tool even if it doesn't fix the issue with the inaccurate sensor.

As they say.. location location location. You also have to find the sweet spot to get the reading. I found I have to point it below the valve on the rim and move it slightly left and right. The first tire always seems to take the longest to read / honk

I did a winter tire/wheel swap from tire rack (all new parts including tpms). the relearn tool would not register all wheels. I tried three different tools. Replaced the sensors and the tire shop was able to relearn them. Fast forward to spring, put factory wheels back on. The relearn was accomplished using one of the tools from Amazon. Swapped the winter set back on a week ago (I live at 9200 ft so it’s time). The relearn will not complete. Sometimes I get 3 wheels to honk but sometimes only 2. It’s always the rear wheels That fail to relearn. I tried rolling down windows and opening the hood to reduce any interference but no joy. Has anyone tried to dismount and move the wheel closer to the module And then reinstall? Other suggestions?