For those with a set of takeoff tires?

[yat74]

If you have two sets of tires and rims, one for street and one for offroad; What do you guys do about the TPM relearn when you change out the tires. Do you have TPM's on all the tires or just on one set? But then what do you do about the service TPM messege, when put tires on without TPM's? Inquiring minds want to know, I want to get another set of rims to have the two sets but I am perplexed by this issue? Help

[H3slate]

You can reset the tpm's when you swap the tires, it does not read your spare. When you are resetting the tpm, like after a tire rotation, it has you reset the tpm at all four tires, not the spare.

If your offroading wheels do not have tpm sensors, the tpm will beep at you every time you start the rig. You can quiet the warning, but it will still show up.

I was looking at picking up another set of stock rims off ebay for offroading, and I noticed that almost all of them did not come with the tpms installed. There should be a way to buy new tpms, especially when the batteries in the sensors are not going to last forever.

[f5fstop]

The BCM can only read four sensors at one time; therefore, it is programmed from the factory to read the four sensors on the ground, and it will disregard the sensor in the spare.
Since the system used on the H3 does not display the location of a specific sensor if there is a problem with the tire's pressure, you do NOT need to relearn the sensors after the rotation, if you only rotate the four tires on the ground.
However, if you decide to rotate all five tires (four on the ground and the spare), you must (well, you should) relearn the sensors since the BCM will be reading three sensors on the ground, plus the tire that became the spare. Meanwhile, what used to be the spare will not be read, until you relearn.
When you set the system into the relearn mode, the sensors retained in memory are erased. So, when you lower the pressure in each tire to allow the BCM to relearn, it will honk to notify you when each sensor is learned, up to four sensors. (The lowering of the air pressure in the tire causes the sensor to wake up and send out a signal. The dealers use a special tool that when held near the tire's valve stem (the valve stem is part of the sensor), makes the sensor send out a signal to allow the BCM to learn that particular sensor.)

If you switch tires and rims when going off-road, I would say live without the sensors, just make sure your tire pressure is ok before traveling on the road. Your TPM will go off each time you run through an ignition cycle (off/on), and the message will be displayed (unless you hit the button). If you decide to put sensors in the off-road tires, you would then have to go through the relearn each time you put the tires on and then again when switching back, plus if you airdown, you have have the TPM message.
Just my opinion, but if it was me, and I was just going to run one set while off-roading, I would not purchase extra sensors. Sensors are available via GM service parts.

[NEOCON1]

if i had an extra set i would just leave them at 10 psi all the time

[yat74]

Thanks Fstop that answers it.

[lotus4s]

I have two sets with sensors in both sets and do the reset procedure when I swap them.

[Rred]

I'm gonna bring this one back to life.


How much does an extra set of TMPS usually run?
Can you get them from discount tire, or just from Hummer?
How can you tell if the new set of wheels supports a TMPS system?