Apparently it is easy to reset the existing GM TPMS sensors tto 'the proper tire pressure' with a $10. tool and some 'fancy footwork' button-pushing of various kinds. Put the pressure you want into the tire, de-activate and then re-activate the sensor, and the system will then 'learn' the new pressure as the standard. What I am sill fuzzy about what the new differential will be. Say you reset to 50 - with the light come on at 49 or at 40?

The nannying nagging horse**** on the truck's display doesn't really Bother me - although it is a bit annoying that it over-rides whatever EYE want to see; say RPM, Remaining Range, or whatever. It's like I can hear it saying: Eff what you want! I will Tell you what EYE want and tough **** for you! I own this truck - not you. You just paid for it. <g>

I am going to drive this van to Florida as I dislike it and have yet to sell it in New Jersey. I'll see if I can accomplish the TPMS reset before then. I only bought it to tow a camper but the hard ride annoys me. So I bought a 2000 conversion van to tow the camper. 5.7 and it rides like a Cadillac. Also lower and easier to get into and out of. <g> Both of which were a familial complaint about the 2018. <g>

 

Something else - it appears that TPMS valve stems are sold in four-packs. What about the spare tire? <g>

 

The spare tire does not have TPMS. I put one in when I got new wheels so that we could do a five tire rotation.

https://www.rockauto.com/en/moreinfo...08860&pt=12036

 

My Toyotas all do - I wonder why GM thought otherwise?

You are right about a 5-tire rotation but I thought that was bad for radial tires - reversing the rotation. Not true any more?

I never thought about it until recently but with the rears on this 2018 Savana at 80 and the fronts at 60 - the TPMS sensors would require recalibrating at Every tire set rotation.

 

Do you mean you're going to bring the van to Florida to sell it? If so, be aware that people down here are very leery of vehicles from the North. A lot of us won't even look at one that's spent time up there.

 

You have to reset the location already when you rotate. You also need to change the pressures. I need to find a new tire place because they aren't smart enough to do either. I bought the reset tool for $8 off Amazon.

 

Be that as it may; I'll have to take my chances. I've run out of time to sell the 2018 in NJ so my only reasonable alternative option is to leave it in NJ until summer, pay for insurance, etc. and sell it then. Which idea doesn't really appeal to me. <g> My Tacoma is really a much better suited NJ-truck for me so keeping the 2018 Savana here as a replacement doesn't appeal to me.

Although, there is possibly a third option: if I can make the 2018 ride acceptably well, and if, by comparison to my 2005 1500 in Florida, I decide that I like the 2018 better, maybe I'll sell my 2005 FL-Savana instead. It was a mistake to buy the 2018 Cargo for towing in NJ - of course I didn't find that out until after I bought it. The 2018 2500 4.3 really is twice the truck that the 2005 1500 4.3 is but . . . . the 2005 has always done everything I've needed done and everything on it, except the transmission, is new. <g>

Sometimes it's not easy being me! <g>

 

I doubt you’ll ever get a 2500 to ride like a 1500, but “acceptably well” is subjective. I bought a TPMS emulator module on eBay from a seller in Quebec. It tells the TPMS receiver that the inflation pressures are perfect all the time, so the alarm never activates. Of course this requires that you actually manually check tire pressure on a regular basis. I now run roughly 50 psi in all four tires. I’ve seen no noticeable change in fuel mileage or tire wear, but it definitely improved the ride somewhat. It’s never going to be cushy (2024 3500 passenger van). Handling is slightly looser, but not enough to worry about. The biggest benefit is that in winter I can get decent traction without constantly being annoyed by the warning light/chime.
edit: in my opinion, winter driving with a light or no load with 70 psi in the rear tires is downright dangerous and foolish

 

Thanks.

Yesterday I reduced the tire pressure on the 8-lug 2500 to 45 lbs. all around I was going to go to 35 but I was freezing out there in the wind so I stopped at 45. Took the van out for a short spin on bumpy streets and it seemed remarkably better.

Maybe with a set of Michelin LTX's I can learn to live with it. After Christmas I'm going to spend 1100 continuous miles in it so we'll see how it seems to me after that experiment.

 

2018 Savana 2500 8-Lug

OK. <g>

Bought the TPMS reset tool. Adjusted the tires to 40 lbs. pressure. Ran through the reset protocol; horn blowing, and turn signals flashing. After which the dire warnings are gone from the dash display but . . . only two tires displayed a pressure. <g>
So I ran through the reset process again - thinking maybe that I had made a mistake. But only two tires display a pressure on the display. The displayed pressure Are correct, but there's only two of them. <g>

It all seems weird to me. Start out with 80 rear / 65 front - system is apparently happy with the sensor operation and the pressures they are all sensing. Adjust all the pressures to 50 and all four tires register the lower and pressure and display as a crisis-grade problem. Buy the TPMS re-learn tool and two sensors successfully reset correctly and two others do not. Same truck, same sensors, same tool, tool operated by the same person at least eight times . . . . <g>

The above was as of yesterday. This morning the low pressure warnings are all gone but they have been replaced with a Service TPMS System warning. And scrolling through the tire pressures screens showing each pressure only as a row of dots. On one the hand change in tire warnings is much more convenient as it only appears once at each startup and then never comes back until the next startup - but it does make me wonder both WTH Happened? and . . . What can be done to fix it? <g>