Tire psi

asilverblazer · August 12

18 hours ago, ArrowsmithPML said:

Those psi values are too low for a 10 ply tire. Simple really.

No.

newdude · August 12

5 hours ago, jgaudet99 said:

60psi front and 80psi rear

But I am not running the factory tire brand or size!

it's load range F Toyo tires

5 hours ago, jgaudet99 said:

Here is an image of a quick Google search about these tires on my truck and it's exactly same psi recommendation the Toyo tires company gave me!

I'm not looking for anyone else recommended psi or anything, I'm just looking to see if anyone knew a way to get rid of the factory low psi warning light, because I'm not running high psi and ruining my tires when I'm not towing!

You SHOULD be. IF you underinflate, you can compromise the truck's handling and stopping. Its an 8400lbs truck. LOTS of weight on the front end empty.

Ideally you'll want 55-60psi all the way around.

Tire light. GM dealers won't help. LIABILITIES. Others have mentioned tools that exist. That will be your only route.

Atlas · August 12

In the motorhome world, people refer to tire manufacturer's pressure-weight charts to determine a good PSI for their motorhome tires.

What they do is get axle weights for the vehicle at a CAT scale or other scale. Drive on, drive off, the scale spits out a ticket with the weight over each axle. Then, you know the approximate weight per tire on that axle. Then, you refer to the pressure/weight chart published by the manufacturer and set the tire PSI accordingly.

Of course, you will want to adjust (and know how much to adjust) when you decide to carry more weight. For everyday unloaded ride, bringing down the PSI within a safe range that still adequately supports the vehicle's weight relative to the construction of the tire can really help with ride quality and under/over-inflated wear issues.

I don't see why it would be any different for a pickup. The key is the tire needs to be rated to support the load safely at the PSI you've selected.

Edited August 12 by Atlas

jgaudet99 · August 13

Thanks everyone for the help!

I'm going to stop into the scales one of these days and weigh my axels, for the time being, I am going to run Toyo's recommendations and also do a chalk test.

I have a tire shop that's going to try their scanner to reprogram and set the the factory psi values lower, and if they can't I'm going to order a scanner and do it myself!

Chuck FB · August 13

1 hour ago, jgaudet99 said:

Thanks everyone for the help!

I'm going to stop into the scales one of these days and weigh my axels, for the time being, I am going to run Toyo's recommendations and also do a chalk test.

I have a tire shop that's going to try their scanner to reprogram and set the the factory psi values lower, and if they can't I'm going to order a scanner and do it myself!

You may have come across this chart before and ironically this is a Toyo printed chart but it applies to all brands of tire types typically sold in north america since they build the tires off of the same standardized guide lines. Page 32 I think is where you will find your tire size and type to use as a guide along with weighing each axle individually to figure out your minimum pressure you can carry safely at highway speed.

See what your tire guy comes up with as I would be surprised if they don't have a tool that can do it as long as they know how to navigate the tool to find the right area for placard reprogramming.

Application of Load Inflation Tables Version 2020-7

jgaudet99 · August 13

Thanks I'll check that page out.

jgaudet99 · 2026-08-19T00:03:14Z

On 8/12/2026 at 1:23 PM, Chuck FB said:

Yes exactly, more and more these days people/companies are afraid of liability issues so its easier just to say no rather than risk putting their neck on the line.

I will say with the Autel unit or when I used it last year on my truck, it wasn't like I could choose the 2025 model year or even the 2024 model year as that option was not there to manipulate the placard pressures but had to go back to 2023 or there abouts and then it showed up as an option, odd but that was how the software was then and I can't say one way or the other now as they throw out updates every so often. I still would talk to your tire dealer though to start with and they may do it for nothing but also they may have a comment on a better unit to purchase. All I know is that one of the large tire shops in my area happens to use these Autel units for their use and set them up to use the wifi and all of that jazz for constant updating because each tire tech has one handed to them by the shop but I just plugged it into my laptop to update it and yes if one is bought it has to be registered so you can get the link to do updates and then the unit has to be updated before its even used. I am not at all techy so it took me a bit but anyway just a heads up for anything you buy, most likely it will need to be connected to a computer to access the internet to have it updated to the latest software version before you can put it to use.

If your truck is near empty, those tire pressures you listed are a very safe upper range pressures to carry the weight, both the front and rear as I know they could be run lower yet with an empty truck. And if its a trailer and not some motorcycle your going to strap onto the front of your truck on a rack, you shouldn't have a need to inflate your front tires if your at 55 front already, its the rear ones that would need more air if you have much hitch weight.

Well I ordered the Autel ts508, and it won't work on my truck I tried all the 2023 and everything it just says vehicle not supported lol

I'm able to send this unit back, so I'm going to do that, then I'll just stop into a some tire shops and if none of them are able to do it, I guess ill have to spend a bunch of money to get a good scanner..... Thanks GM lol

Atlas · 2026-08-19T01:31:11Z

1 hour ago, jgaudet99 said:

Well I ordered the Autel ts508, and it won't work on my truck I tried all the 2023 and everything it just says vehicle not supported lol

I'm able to send this unit back, so I'm going to do that, then I'll just stop into a some tire shops and if none of them are able to do it, I guess ill have to spend a bunch of money to get a good scanner..... Thanks GM lol

Understanding and using modern scan tools is its own body of knowledge. I had little hope that would work...programming access to the BCM is probably required and that is not easy for us consumers. Expensive scan tool, GM programming subscription, online authentication, etc.

It also may be a matter of finding the right dealer to program it for you. Flashing a modern BCM might be a little too advanced for most tire shops.

Chuck FB · 2026-08-19T01:31:22Z

1 hour ago, jgaudet99 said:

Well I ordered the Autel ts508, and it won't work on my truck I tried all the 2023 and everything it just says vehicle not supported lol

I'm able to send this unit back, so I'm going to do that, then I'll just stop into a some tire shops and if none of them are able to do it, I guess ill have to spend a bunch of money to get a good scanner..... Thanks GM lol

And so you had gone through the process of registering and updating the tool and so on ?. All I can say is that on the front page as the tool fires up you go to advanced mode, then vehicle model comes up and you choose Silverado ( not the DRW or EV since your a single rear wheel ) , then I think its choice 2 which is 07/2021 - 12/2026 ( 433mhz 13542523 ) as that is the series of tpms sensors and then go down to choice 5 which is tire type/pressure selection. Hit yes and it says to connect to OBD port and turn ignition on.

Having said this, I updated the software in my tool lately and these year range choices look different from the past due to them doing some updates it would appear and I have not connected up to the OBD port since last year so hopefully I am not in for a surprise with them screwing up the software and that it won't work on my truck anymore either.

So my question is, when you plugged into the OBD and started your truck it had that message on the Autel screen "vehicle not supported" ?. That does seem odd as tire shops would be pissed right off if hey can't use their tool on the model year after mine that in theory is supposed to be much the same truck ... unless GM did some change in the computer system to block certain things from access.

Chuck FB · 2026-08-19T01:36:47Z

1 minute ago, Atlas said:

Understanding and using modern scan tools is its own body of knowledge. I had little hope that would work...programming access to the BCM is probably required and that is not easy for us consumers. Expensive scan tool, GM programming subscription, online authentication, etc.

It also may be a matter of finding the right dealer to program it for you. Flashing a modern BCM might be a little too advanced for most tire shops.

Its just that it worked on 2024 trucks on this forum and my 2025 model truck, unless GM did something since that point to screw up access or Autel has a bad update. I haven't had need to use my tool since last year when I did the changes to the placard pressure settings and since then I updated the software on my Autel but have not plugged into the OBD so hard to say if I would get a surprise as well.

All I know last year when I bought the Autel I was warned to be sure to update it before I tried using the unit as they said who knows how long ago unit itself was actually manufactured as the software could be way out of date.

jgaudet99 · 2026-08-19T01:47:21Z

4 minutes ago, Chuck FB said:

Its just that it worked on 2024 trucks on this forum and my 2025 model truck, unless GM did something since that point to screw up access or Autel has a bad update. I haven't had need to use my tool since last year when I did the changes to the placard pressure settings and since then I updated the software on my Autel but have not plugged into the OBD so hard to say if I would get a surprise as well.

All I know last year when I bought the Autel I was warned to be sure to update it before I tried using the unit as they said who knows how long ago unit itself was actually manufactured as the software could be way out of date.

I tried before I updated the scan tool just incase an update messed it up, but it never worked so I updated the scan tool and it still didn't work.

Only difference is I click on Sierra not Chevrolet cause I have a Sierra.

If I click on 2026-2024 I didn't have any option to change placard, when I click on 2023 it does give me the option but when I try to do it,.it says vehicle not supported!

I have my region or market or whatever it is set to America I think, is that what yours is set to?

Chuck FB · 2026-08-19T02:14:44Z

32 minutes ago, jgaudet99 said:

I tried before I updated the scan tool just incase an update messed it up, but it never worked so I updated the scan tool and it still didn't work.

Only difference is I click on Sierra not Chevrolet cause I have a Sierra.

If I click on 2026-2024 I didn't have any option to change placard, when I click on 2023 it does give me the option but when I try to do it,.it says vehicle not supported!

I have my region or market or whatever it is set to America I think, is that what yours is set to?

Ok I missed that part that yours is a GM. The strange part is that the choice for year ranges and within the year of 2026 is different on the Sierra then on the Chev for some reason as I am looking at my tool at the Sierra choices. Now I am guessing you see as to your sensor part number as it may be different on your truck for some reason and a call to GM should get you the part model number of the sensors you should have as well as which MHz your sensors are. I know mine are the ones as per what I listed but there are other choices in the Autel and got me wondering if by some chance they put different ones in your truck. Having said that, did you try using each of the choices starting from No 1 and going on down the list, not sure if that would mean shutting off the engine each time and resetting the tool and going at it again each time. Also I thought of something else which may sound retarded but if there was some stupid chance that the chev choice would work. The reason I say that is that the Sierra is showing a range up to 06/2026 for the various choices of sensors it could be where as the Chev has one choice that has that 12/2026. By the way it is possible to not run the truck and you may know that as per not pressing the brake but pressing and holding the start button for a few seconds and it lights up the dash ( its called service mode ) but that sucks battery power and if it were me doing it that way I would be throwing on a decent sized battery charger before doing it that way as killing your battery won't make you happy at me at all !.

Like I say, just a thought to try the Chev choices if you have already exhausted the Sierra choices but first it would be nice to know for sure what exact sensor model and hertz your truck uses as I assume only those choices that mention the sensor would work unless a choice that does not mention the sensor model would somehow work. Its frustrating when one is trying to use tools like this without the experience of the tool and the vehicle, as I am sure dealer techs themselves struggle with it when starting out or a new model year comes along that is slightly different.

Edited 21 hours ago by Chuck FB

Chuck FB · 2026-08-19T02:35:52Z

32 minutes ago, jgaudet99 said:

I tried before I updated the scan tool just incase an update messed it up, but it never worked so I updated the scan tool and it still didn't work.

Only difference is I click on Sierra not Chevrolet cause I have a Sierra.

If I click on 2026-2024 I didn't have any option to change placard, when I click on 2023 it does give me the option but when I try to do it,.it says vehicle not supported!

I have my region or market or whatever it is set to America I think, is that what yours is set to?

I forgot to answer the question as per what market mine is set to and yes I finally found that area on mine and yes its also set to America.

So here's something I realized as I wasn't looking at that part in the Sierra section until now, your right that what I see here as choice 3 under Sierra which says 07/2023-06/2026 ( 433 MHz 13542523 ) it has no choice 5 for tire pressure selection. Where as it does under the Chev choice. However I kept going down the list within the Sierra and I am really wondering if choice 9 will work for your truck as it has the same model number and hertz sensor as my truck. I would say try that choice first, if that doesn't work then jump over to the Chev section and again choose that same model and hertz choice as for some reason the Chev section gives the choice 5 of tire type/pressure selection for going back a number of years. Could very well be an Autel thing that they just didn't get the updates all done properly under Sierra but anyway first try that selection 9 I suggested under Sierra and then go from there.

Atlas · 2026-08-19T02:54:45Z

It's possible the two trucks are using different body control modules which is why yours works and the OP's doesn't.

So much in these newer vehicles depends on model/trim configurations, production date. They don't all use the same modules like back in the day.

Chuck FB · 2026-08-19T05:10:32Z

2 hours ago, Atlas said:

It's possible the two trucks are using different body control modules which is why yours works and the OP's doesn't.

So much in these newer vehicles depends on model/trim configurations, production date. They don't all use the same modules like back in the day.

True, hard to say what differences there may or may not be between Chev and GM as well as a production year or mid year part change either.

I just found it odd that under the Sierra choice on the Autel that many of the last few years of production year did not include the choice of changing the tire pressure but if that is an Autel thing or a GM thing as to why the choices were not there. Knowing what tpms sensors are on the truck should give some guidance into which choices on the tool even make sense to try as I wouldn't give up just yet with the tool but I guess he will see what if anything he comes up with if he finds out a bit more info and tries a few more things on the Autel.