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The car has been in the shop for a few weeks due to the SC install, tune and oil cooler installation. Prior to the shop all the tire sensors were working but now my RF and LR tire sensors are not registering. I know the DIC relearn process and tried using both a magnet and the GM tool I bought off Amazon for $10. I even disconnected the negative battery cable for one hour to try and reset everything but still nothing.
What's weird is that the working LF tire sensor is not registering and I'm not receiving the horn beep. With the TPMS re-learn, you start with the LF (Driver's side) tire and work around the car clockwise to the LR tire but I can't get past the first tire to get to the non-working RF sensor.
How old are your sensors? It is possible they are starting to go maybe and it just happen to correspond to your upgrade? I mean it is a pretty easy process and you have both the magnet and the RF tickler!
How old are your sensors? It is possible they are starting to go maybe and it just happen to correspond to your upgrade? I mean it is a pretty easy process and you have both the magnet and the RF tickler!
They are GM sensors and were mounted back in 2019 when I purchased new tires so they are at least 6 years old depending on how long they were on the shelf at the dealership. I accept that they may have died, however why can't I at least get the working LF sensor to register since it is the first sensor in the learning cycle? Do dead sensors prevent the start of the learning process cycle?
I can't remember the exact timing, if the LF which is first in the process won't register, the computer sits there and eventually times out. I forget how long you have in between each one as you work your way around, but there is a timeout that will stop the process if not completed within a specified time period.
I can't remember the exact timing, if the LF which is first in the process won't register, the computer sits there and eventually times out. I forget how long you have in between each one as you work your way around, but there is a timeout that will stop the process if not completed within a specified time period.
You have 45 seconds between each wheel. Not sure if that’s longer for the first wheel (Front Driver) but I can’t get that one to register or confirm with the horn beep and wonder since because it is working that I can’t get it to re-register or re-confirm which prevents me from moving on to the Front Passenger sensor which is not working.
I think there’s something else wrong but:
Is there any reason you don’t swap L&R front tires just for the car to recognize the first one?
If that’s all it takes after being synchronized; then you can go back and swap D & P fronts after. You’ll have to do a second sensor learning program but if it works the first time you know it’s going to work again for the correct location
Sure it’s a bit more complicated but if it works WTH!
It’s not very common to have tpms batteries die so early but it’s possible. I had one die after only 5 years so I replaced them all. I don’t know where they came from because when I bought the car they were replaced with new tires by previous owner
Last edited by Hary Gahtoe; Jul 11, 2025 at 03:02 PM.
They are GM sensors and were mounted back in 2019 when I purchased new tires so they are at least 6 years old depending on how long they were on the shelf at the dealership. I accept that they may have died, however why can't I at least get the working LF sensor to register since it is the first sensor in the learning cycle? Do dead sensors prevent the start of the learning process cycle?
If you have OEM sensors, they should be triggered by a magnet I believe. Perhaps try a different magnet.
I think there’s something else wrong but:
Is there any reason you don’t swap L&R front tires just for the car to recognize the first one?
If that’s all it takes after being synchronized; then you can go back and swap D & P fronts after. You’ll have to do a second sensor learning program but if it works the first time you know it’s going to work again for the correct location
Sure it’s a bit more complicated but if it works WTH!
Thanks for the idea but that looks like at least a 3-beer garage project.
I think there’s something else wrong but:
Is there any reason you don’t swap L&R front tires just for the car to recognize the first one?
If that’s all it takes after being synchronized; then you can go back and swap D & P fronts after. You’ll have to do a second sensor learning program but if it works the first time you know it’s going to work again for the correct location
Sure it’s a bit more complicated but if it works WTH!
You don't actually need to switch the wheels. Just go to the RF first like it's the LF. If the learn process starts working, you know the LF sensor is dead.
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