thanx bro,i am new at this hummer thing,but i am lovin every minute of it

 

I thought the spare is not in the loop. The system only receives four signals????? I rely upon the 2006 H3 manual, page 5-62. The system can monitor the four tire positions, no spare. The spare does have the sensor and would need to be programmed in to one of the four spots per the PITA instructional steps if used.? This has been the consensus of prior threads and appears correct? If anybody can dispute this, please do.

TPMS Sensor Identification Codes

Each TPMS sensor has a unique identification code.

Any time you rotate your vehicle’s tires or replace one or

more of the TPM sensors, the identification codes will

need to be matched to the new tire/wheel position.

The sensors are matched to the tire/wheel positions in

the following order: left front (LF), right front (RF),

right rear (RR) and left rear (LR).

No mention of any spare????

 

so what do you keep your tires at? 35, 37, 40 psi... i have a 07 H3 adventure

 

I had this issue not to long ago. Went through the whole set up to clear TPM Fault, that worked but still had. Low tire, still showed up every ignition cycle. Make sure you have all your valve stem caps, also tire pressure had to be within 2 PSI or so of each other for mine to clear. Set your spare the same. I'm also running 40 in all 5 tires.

 

Mine are exactly 38psi. Not too hard, but helps w/ the mileage.