dealer said tire pressure monitor going off all the time is normal (WTF?)

[HummBebe]

Same here they fixed it.

[H3 Hummer]

Same here. They fixed it.

[f5fstop]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by DarthKarl:
I believe the key to solving most TPM warnings is to invest in a portable air compressor. Then air up your tires to the required psi on a cold morning before you have driven the Hummer. This should take care of most TPM warning lights. </div></BLOCKQUOTE>

Exactly...
And if you have large temp flucuations between evening and morning, and the light goes off after driving a few miles...who cares.

[DarthKarl]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by bender:
eventually, people will have so many warnings that they will ignore the TPM and be in real trouble when they really have a flat tire. </div></BLOCKQUOTE>

That's my concern as well. I believe the best engineering solution is to alter the software that does the monitoring. When the rig starts up and the system does its initial check, if the psi is extremely low then the warning should indeed go off to let the driver know there is a problem. However if the initial under-pressurization is more marginal (due to a cold morning for example) the software shouldn’t immediately trigger a warning until the rig has had some time to drive and to warm the tires.

If people get a lot of TPM warnings they’ll learn to ignore all of them even a serious one. Loosening up the software constraints a bit might solve a lot of problems - especially for the more ordinary driver who doesn’t hang out on Hummer boards

[bender]

i drove it about 2 miles to the gas station as soon as i woke up this AM...so it sat about 12 hours overnight in the cold. they were at ~30 PSI after the quick 2 mile drive.

[f5fstop]

System going off is not normal, unless air temps drop, lowering the air pressure in the tires to the calibration point.
As for dealers statement, it depends on the reason. If air temps drop 40-50 degrees in one day and tires are one or two psi below recommended pressure...yes, the system will go off until the tires warm and pressure increases.
If dealer says it is normal to go off when temps don't decrease, and air pressures are ok, then dealer is clueless.
For the dealer, they have hundreds of people this time of the year bringing their vehicle in for service due to the tire pressure system going off. So far, 98% of those claims (for all GM vehicles and I would bet it was the same for all other), are due to the air pressures in the tires being set below the recommended pressure, and the temps drop at night.
It happened to me a few weeks ago, and after adding about 3 psi to each tire on Saturday morning, it has not come one since.

[DarthKarl]

I believe the key to solving most TPM warnings is to invest in a portable air compressor. Then air up your tires to the required psi on a cold morning before you have driven the Hummer. This should take care of most TPM warning lights.

[fourfourto]

Its simple light goes on check and add air to tires as needed.I added air last week and light dont come on in morning anymore.

[HummerJim]

No, that's not normal. I had mine go off in cold weather, but I had a low tire (only about 4 psi low) and airing it fixed it. You might need to have a sensor replaced - but that is not normal!

[NEOCON1]

f5stop salesman had four of the valvestem sensors in a bag and stuck them in the glove box and said the would be installed at pdi time . Im a diesel tech for enterprise and am pretty familliar with gm we buy 10's ofthousands of vehicles from them every year . There must have been a vender problem early and thats why so many complaints . Could of even been a soft ware glitch in system much less refined than the system in the vet it gives psi at each tire not just a warning that one is low

[bender]

i hate dealers. normal?

GM can't make a TPM system that works and the dealer says its normal. that makes sense.

[f5fstop]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by NEOCON1:
Also was surprised tpm's werent installed until after purchase on my vehicle </div></BLOCKQUOTE>

Strange. They are installed by the company that does the tire mounting for the factory.

[Tommy36998]

Had that problem. Bad monitor. Dealer replaced it and it has not come on since