Yo,
I've been a H3 owner for 4 weeks and we love it... except the last 10 days we keep getting a low tire pressure light on the dash. We've taken it to the dealer twice once to check the pressure and second time to reset sensors. Tonight the bastard pressure light turned up again... is this something to worry about... it's pretty annoying to see especially on a new truck. I'm planning on taking AGAIN to the dealer --- any suggestions on a fix or ways to ease my frustration on this beauty?

 

Pump up your tires (ALL of THEM)..to 38 PSI.


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thanks Dennis... if only it was that easy. Dealer already tried that one... i loved the link though

 

Well then..It has been discussed that it is none other than the TPM module and should be changed...This was a problem with the Early 06's.

 

yep...it sounds like you got a bad pressure monitor. These are inside your tire, the take your tire off and replace it, nothing to major fortunately ( if its that ).

 

Dennis,
just for inquiring minds -- the door panel sticker says 35psi, the Scottsdale dealer actually recommends 32 psi and you say 38 psi... the rationale for your suggestion? Thanks again.

 

Before changing the pressure monitors check each tire pressure . The same thing happens to me and the result was that I was very slowly loosing air on one tire due to a faulty valve.

 

Once again, a very commonly and widely discussed topic...But for sake of you having to search the topic...A higher tire pressure will give you 1. better fuel economy, 2. Longer life on the tires, 3. less road noise and 4. lessprone to blunt force punctures....I run mine at 40 PSI...The door jam and the dealer are thinking a softer ride and creature comfort and maybe a tire sale in the nearer future..So if you have 32 PSI now from the dealer thenyouneed to pump up to 38 PSI like I said before and not tell me the dealerdid that..this should fix your TPM problem..Make sure ALL tires are the SAME pressure...do it yourself this time.

 

or just take that half a second to push in the trip odometer button at every ignition cycle to clear the message....not too tough.

 

If you are running the Bridgestones, the recommended pressure is 35 psi, but this is for a COLD tire. Cold meaning, not been driven on for over three hours (I like to hold for four hours to be sure). Also, no side of the vehicle is in direct sunlight as this will increase the pressure by up to 2 psi.
If your tires (all four on the ground) are set to 35 psi cold, and there is no large fluctuations in the temps (such as checked on a hot day, and it drops to cold at night), then it could be:
A bad sensor in one of the tires, or a bad BCM (there is NO TPM module on the H3, there are five tire pressure sensors, one in each tire (except for 2008), and they transmit the signal to the BCM (body control module). The BCM can only read four sensors, so if all the sensors on the four tires on the ground are programmed to the BCM, it ignores the spare tire sensor.

Raising tire pressure above recommended will give you a little better fuel mileage, but will not necessarily give you a longer wear. It will tend to wear the center faster than the outer, so the wear may not be even.
The sticker in the door jamb IS NOT SET to sell tires. It is set after extensive testing (for GM, primarilyat Milford proving grounds)for fuel mileage versus ride, versus wear and most importantly SAFETY.
Boosting to 38 will probably not affect safety, might give some better mileage, but will not give better wear. Over pressure can actually cause more blowouts due to hitting sharp items at high speed, since it does away with some of the flex in the sidewalls.