Tire pressures round 2

[Chuck FB]

7 minutes ago, revrnd said:

About liability, w/ 1 of my previous trucks that had the TPMS, I had the dealer drop the thresholds, so I could run the tires @ a lower pressure when I wasn't towing my travel trailer. 

I see you found the thread after all that has the video link, and yes its from rjgvt. No doubt attitudes over liability have changed and what the manufacturer is ok with or not. Then again if I knew someone well at the dealership in the drivers seat then I may have had a different outcome and they would have done it but created no proof on paper they had done it. 

[revrnd]

12 minutes ago, Chuck FB said:

I see you found the thread after all that has the video link, and yes its from rjgvt. No doubt attitudes over liability have changed and what the manufacturer is ok with or not. Then again if I knew someone well at the dealership in the drivers seat then I may have had a different outcome and they would have done it but created no proof on paper they had done it. 

I have no idea how the work order was written. There was paperwork involved. Then again, you never know what Mary Barracuda knows about a vehicle even if the work is done off the books during lunch hour...

[revrnd]

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[revrnd]

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[revrnd]

On 3/7/2025 at 6:37 PM, Chuck FB said:

having a set of Nokian LT3 studded mounted on them, the problem is that I was not aware of the special GM sensors at that time and I had said specifically what these tires were going onto and it went over the heads of two different staff at the tire shop as they figured they knew for sure it would take a sensor they typically use. True, it probably will work but they won't self orientate themselves like these new GM sensors and have recently talked to the tire shop and they will pull their sensors and put in the ones I just bought from GM ... had I realized this a few months ago I could have saved myself and them the hassle but it is what it is. 

 

A couple of notes on TPMS scan tools. When I got a set of winter rims for my 2017, I just picked up a set of Schrader sensors from Carquest on the recommendation of a mechanic friend (turns out that was a mistake that I only recently got remedied). When I mounted that set on the truck, the TPMS system wouldn't recognize the sensors (I see the OEM sensors on my '24 are made by Schrader). I took it to the dealer & whatever tool they used (GM proprietary or aftermarket, I don't know) was unable to read the sensors as well. So each winter I would put up w/ the error message on the cluster.

 

Fast forward to last fall & I was talking to the guys at the local garage. They said they might be able to solve my problem. I threw 1 of the mounted tires in the back & took it to them. They were able to relearn it to a position using a Snap-on tool similar to this:

 

 

(I'm thinking this is an updated version). It works w/ OEM & aftermarket sensors. After mounting the tires before winter, I had them relearn the rest of the tires & I had no fault codes thru the winter. When I asked about lowering the tire thresholds, they said the tool didn't allow for that. Oh well they solved 1 issue.

Edited April 23, 2025 by revrnd

[Chuck FB]

9 hours ago, revrnd said:

 

A couple of notes on TPMS scan tools. When I got a set of winter rims for my 2017, I just picked up a set of Schrader sensors from Carquest on the recommendation of a mechanic friend (turns out that was a mistake that I only recently got remedied). When I mounted that set on the truck, the TPMS system wouldn't recognize the sensors (I see the OEM sensors on my '24 are made by Schrader). I took it to the dealer & whatever tool they used (GM proprietary or aftermarket, I don't know) was unable to read the sensors as well. So each winter I would put up w/ the error message on the cluster.

 

Fast forward to last fall & I was talking to the guys at the local garage. They said they might be able to solve my problem. I threw 1 of the mounted tires in the back & took it to them. They were able to relearn it to a position using a Snap-on tool similar to this:

 

 

(I'm thinking this is an updated version). It works w/ OEM & aftermarket sensors. After mounting the tires before winter, I had them relearn the rest of the tires & I had no fault codes thru the winter. When I asked about lowering the tire thresholds, they said the tool didn't allow for that. Oh well they solved 1 issue.

I have a feeling there is a reason why these companies are creating proprietary sensors, it creates a revenue stream once they get a tire shop hooked to a certain sensor and the correct tool that can program/read them. Otherwise the industry could have easily come up with one system ( like is done with tire sizes and rim size/shapes to fit all tire brands of a certain size for example ) but no, they go and make a mess where the customer doesn't know how convoluted it is until they own the sensors in their wheels !. I knew when I bought this Autel, its not going to be able to program sensors other than an Autel sensor which is a real piss off and yet what can be bought that isn't worth an arm and a leg just to work with the sensors and the vehicles. The young guy at Napa where I bought this 508 said he had been working at Kal tire and they use the 508 a lot in Kal and the wifi portion gets used to transfer data I believe. When I bought the winter tires and sensors they installed and was ironically at Kal tire, they said to bring the vehicle in once it they were on the vehicle ( or they would swap the wheels over ) as they would have to be programmed. I never did put them on the truck as a big part of winter was past already so there the tires sit mounted up on those wheels with whatever sensors Kal tire used, and just holding up the 508 to those tires the unit shows nothing at all as it seems they do need waking up with programming. Yet I can take one of my genuine GM sensors that has never been in a tire and it reads what it is as well as the battery is "ok" with the 508 and the pressure is at zero. I will just have to make a point of hauling the four tires to Kal sometime this summer and have them swap in the genuine GM sensors so I don't have to deal with "their sensors". So eventually I shall see if the GM sensors and system works as slick as they claim, rotating tires or when swapping the mounted winter tires onto the truck and if it will magically figure everything out without any sensor location relearning etc. 

 

And to note about the comment at Kal tire when I bought the tires and of course they wanted to install their own sensors and I did not realize how special the GM oem ones were, they said the GM sensors would be so expensive as a way to steer me to their sensors. Ironically after buying the truck and the dealer marking down the parts prices as a result of being a customer, the GM sensors were actually less than what the tire shop charged for their generic sensors.  

Edited April 23, 2025 by Chuck FB

[rjgvt]

Not sure if the GM sensors will learn the positions on their own or not but I do a relearn with the Autel when I swap wheels/tires. 

[Chuck FB]

10 minutes ago, rjgvt said:

Not sure if the GM sensors will learn the positions on their own or not but I do a relearn with the Autel when I swap wheels/tires. 

That is what the vehicle is supposed to be able to do, the refresh half tons and now the refresh HD trucks, with those sensors as part of the puzzle along with whatever system they have in the truck that must sense the proximity of the sensors relative to their tire positions. Driving it a bit from what I believe causes the system to figure it out quick but otherwise was said to sort it out even if parked for a while. Newdude answered some questions on this not that long ago I believe as to which sensors worked with which vehicles. And that was why this technology doesn't seem like its spilled over into the aftermarket sensor theme that tire shops would have on hand, no idea if its a patent thing but I am not too late yet to have them installed on my extra set of wheels ( I assume they will use their bead breaker and push down one side to swap sensors and then reseat ). It won't be too many months and it will be winter time again, oh joy !

[revrnd]

I was told recently that the 24s relearn the OEM sensor positions after a short drive. I havent looked in the owners manual just used my little tool that I've had for a few years

 

There are several 'versions' of the same tool available online. If all you want to do is relearn their positions, something like this works quite well.