I’ve got a 2012 Tahoe. Recently, I’m getting the warning that my right rear tire is under-inflated. The system is reading 25-26 psi on that tire, but I have verified with my trusty gauge that all the tires are around 33 psi. This is my first vehicle with a TPMS. Is there anything I can do aside from having the sensor replaced?
I have a 2007 Chev 3500. When the temps start to drop in the fall, I get the same warning. To correct the warning light on start up, I over-inflate about 10-15 psi. Stop motor and re-start to make sure the light is gone. Then deflate to desired psi. Not sure why I get this in the fall/winter cooling temps?? Never a problem in warm temps. If there is a perm fix, I’m all ears!
-J.
You would most likely have to reset the tpms sensors which will relearn the air pressures in each tire. Most shops will most likely do it for little or no charge with a relearning tool.
You would most likely have to reset the tpms sensors which will relearn the air pressures in each tire. Most shops will most likely do it for little or no charge with a relearning tool.
Yeah, I might have to run it in. I’ve noticed that the front tires are reversed, too.
<div class=”d4p-bbt-quote-title”>Carter Johnson wrote:</div>
You would most likely have to reset the tpms sensors which will relearn the air pressures in each tire. Most shops will most likely do it for little or no charge with a relearning tool.Yeah, I might have to run it in. I’ve noticed that the front tires are reversed, too.
I think that will keep happening with normal tire rotation. I had a flat recently and it said right rear but was actually right front.
I think that will keep happening with normal tire rotation. I had a flat recently and it said right rear but was actually right front.
There is a way to reprogram the locations, but you need a “relearn tool”.
in the owners manual,it tells you how to do a relearn procedure,it is something like this.
cycle the key from off to on three times with the last time being left in the on position,the horn should honk twice and you will get a message on the dash saying tire learn is in progress,(or you may have to hold down the lock and unlock buttons on the remote at the same time),it is different from vehicle to vehicle,read your owners manual,it will tell you which way,
then starting with the right front tire,deflate until the horn honks once,continue this with the remaining tires,the horn will honk twice again letting you know the relearn is complete when you deflate the fourth tire,no need for a relearn tool when you can do it yourself.
re-inflate the tires to pressure when done.
now,all of that said,if it fails the relearn procedure,a couple of things can be wrong,one,the battery is weak in the tps in one of the tires or the tpms itself is bad,only way to fix this is replace it.
two,the tpms module in the passenger door is bad,not all vehicles put it there,but GM does on most newer trucks,04 – current I believe,you may have to check me out on that.
good luck and have fun at it!!
You had me until deflating all the tires! 
As long as it reports an issue I can find the tire. Im one of those guys that checks/adjusts tire pressure often so it doesnt do a lot for me. Except when I recently had rapid deflation on the freeway. It save my ass by reporting a problem regardless of which tire it actually was. I barely made it to a tire store! Nice to know there is a user procedure though. Thanks!
In same vehicle just 3 weeks ago, I got the same warning, all tires inflated properly however. Took it in and had a nail in one tire, however not the tire on the sensor. Must have been a rotation issue.
There was something wrong, just didn’t jive with what the computer was telling me.
ET
sorry about that Suzuki!! I should have added that you only need to deflate the tire about fifteen to twenty pounds,any more than that and the tps has lost its ability to sense rapid pressure changes,usually due to a weak battery,or failing tps
Problem solved! Turns out my right front tire was low, but the right rear sensor must now be in that location. Duh! 
Like Suzuki said, as long as it alerts you, it’s easy enough to figure out which tire it is, and now that I know they’re not correctly ID-d, I know to not trust the system. Next time I have them rotated, I will make sure they relearn the system.
You had me until deflating all the tires!
x2
If I had a nice compressor, I’d probably do it, but I’ll just make the guys at the tire shop do it.
The system needs to be relearned every time the tires are rotated on vehicles that display the tire pressure individually. You can thank your government for that one. The shop should do it for free it only takes a few minutes on that truck .
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