? about the tire pressure sensor 2005 LeSabre

I am considering putting 16 or 17 inch rims on my car, (I have 15inch now.) and am wondering about the pressure sensors. I can't seem to find any pics or information about them. Do they sit just by the valve stem or are the strapped to the center of the rim?? Any information is appreciated... PICS would be GREAT!!!!

Are you sure you have the actual GM TPMS system where you get a readout on tire pressure on all four tires at a DIC on the dash? On GM TPMS the sensor is part of the valve stem. I don't see where a '05 LeSabre has the real TPMS system.



If a sensor proves faulty or is damaged then it will need to be replaced. This requires a new sensor to be fitted and the BCM to be reprogrammed with its unique ID and its position on the vehicle. The procedures for all vehicles including GM vehicles are illustrated in the 'Tire Pressure Monitoring Systems Guide' which shows service requirements, reset procedures, dismounting/mounting instructions, torque specifications etc for all makes/models and years. The relearning process will also be required in the event of wheel rotation. In principle the static relearn process requires the car to be put into learn mode followed by activating each TPMS in turn (LF, RF, RR, LR) enabling each of the TPMS unique ID numbers to be loaded into the BCM. Each time a code has been successfully loaded the horn acknowledges. The system will cancel the warning light if two minutes pass and no further ID's are learned or if the system has been in learn mode for more than five minutes.

Are you sure you have the actual GM TPMS system where you get a readout on tire pressure on all four tires at a DIC on the dash? On GM TPMS the sensor is part of the valve stem. I don't see where a '05 LeSabre has the real TPMS system.

No I do not, it juist shows that they are normal or low.
So if I went to 17 from 15 then I would need to get larger straps to hold them to the rim. Or would it need to be a totally different sensor?

Check the valve stems and see if they are the special metal type instead of the regular rubber stem which would mean you have the latest TPMS system. The newer TPMS on certain GM vehicles will tell you the approximate tire pressure for each tire in a PSI readout on a DIC.

The older tire pressure monitor system used the ABS wheel sensor(s) to trigger a low tire condition so going to bigger wheels should not be an issue. The system will recalibrate itself.

The older tire pressure monitor system used the ABS wheel sensor(s) to trigger a low tire condition so going to bigger wheels should not be an issue. The system will recalibrate itself.

This just has regular rubber valve stems. So what I have been told about the sensor being strapped to the middle of the wheel is incorrect or is that another option?

Then you have the old style low tire pressure warning system which uses the ABS wheel sensors located in the hub so there is no pressure sensor to worry about. The later GM TPMS found in the Buick Lacrosse, Buick Lucerne and my Pontiac Grand Prix GXP have the special sensor as part of the valve stem assembly. I think Ford uses a TPMS sensor strapped to the center of the wheel.

Your car figures out tire pressure by counting the revolutions of the tire compared to each other between certain speeds. If one starts to differ from where it was, then it signals a low tire. Its all in the Owners Manual.

No straps or Valve stems to worry about. Just reset the tire system whenever you change tires, rotate or adjust pressure.