Tire valve stems defective, but past warrenty. can they be fixed? if not, what is the general price range to replace these tires?

Not unless you have a tire mounting machine - the sensor is inside the tire and is part of the valve stem assembly.

I'm assuming it is a TPMS sensor valve stem? I do not know o any reason the rim would break when replacing it, unless the rim was already cracked around the valve stem hole due to some kind o impact, in which case, the rim should be replaced anyway. As far as fixing it yourself. Unless you can break down the bead seat of the tire and unmount the tire from the rim, you will not be able to replace it yourself. Once the tire is of the rim, the sensor is held in place by a 11mm or a 12mm hex collar. When you remove this collar, the sensor will pull right out from the inside. ANY tire shop should be able to do this for you for very little charge.

The "Rebuild Kit" is just a set of seals, new mounting nut and sometimes, a new valve cap. The sensor must be removed to dismount the tire from the rim without breaking the sensor. (The valve stem is actually part of the sensor - this is why you shouldn't have a charge for "Valve Stem" on your bill.) Installing the sensor with new seals, nut, and valve cap did not cause your light to come on. Breaking the sensor during removal or installation could cause it. Over-inflating the tires can also cause the light to come on in some vehicles. Any way you look at it, they should fix the problem and reset your TPMS Computer to get the light turned off without any argument unless the problem is being caused by a sensor on a wheel other than the one that was replaced. (In this case, it would be pure coincidence that the sensor decided to give up the ghost immediately after the other tire was replaced...not real likely, but I've had similar things happen to cars I've worked on.)

air contracts in colder air temps and is normal that tires could be a little lower but should be fine when you start driving as the air heats up..if its just one tire check for a leak or something in the tire(small screw, nail) that would cause air to leak out in the cold temps. if all tires are doing that check valve stems and tighten them with valve stem tool available at any auto parts store. If tires were replaced they might not have replaced the valve stems and that could be it too.

Valve stems typically cost anywhere from $.59 to $2.00 to $3.00 a piece depending on where you go.

Sears would probably charge about $2 or $3 for a valve stem in one tire.

Replace the valve stem or have it replaced. There is a special tool to unscrew the valve stem. Remove the wheel and tire from the car and depress the pin in the stem to release the air in the tire. When you have about 90% of the air out of the tire, insert the tool into the stem an turn counterclockwise to remove. After you install the new valve stem, get a ride to a gas station that offers free air and fill the tire up. As long as the tire is still seated to the lip of the rim (check just for your safety but I very highly doubt it unseated from the rim) and fill the tire to the cold psi rating which is stamped on the sidewall of the tire. If you want to check the tire itself for a slow leak prior to doing the steps above, here is what to do. Get a pan or plastic tub that is sightly wider and longer than the tire and rim. Fill the tub with water and set them it in the water (while it is still filled with air) and slowly roll the tire in place and look for small air bubbles to rise. If you see bubbles, there is a leak.

Check your tire pressure, and adjust as necessary first.

Next, have you changed anything having to do with the rims/tires/valve stems? The valve stems mounted in your factory rims have a tire pressure monitoring sensor/transmitter mounted on the inside. The valve stem itself is the antenna for the transmitter. If you have had the valve stems, valve cores, or even the valve caps replaced, that can cause a fault in the system.

Also if you used a canned flat repair like 'Fix-A-Flat', that could be clogging the sensor. I don't recommend using fix-a-flat on tires with TPMS, but if you're in a jam, sometimes you have to.

If you had the tires changed, the shop has to be careful when mounting and dismounting the tires. The sensors are easy to damage with tire tools.

In order to reset the TPMS, there is a small button either in the glove compartment, or under the steering wheel. Turn the ignition to the 'on' position without starting the engine. Press and hold the button for approximately three seconds. The light will begin flashing. Release the button and wait at least 7 seconds for the system to relearn the sensors. Then turn the key to the 'off' position. Start the engine, and check that the light turns off after about a second.

If the light still stays on, you need to have the TPMS serviced by a qualified mechanic. This should be either a Toyota dealer, or a shop that uses the appropriate TPMS testing equipment.

Good luck, I hope this helped!

does the car have TPMS? if so they make a kit where u can replace the core of the stem that will re seal it. if it only has a standard valve stem then a tire shop should have replaced them with the set of tires, the only way to replace them is to remove the tire.

i dont remember the 95 caddy with pressure monitors id say try your valve stems or the valves themselves to make sure that they are tight. replace any stem caps that are missing.

the tire industry recommends 32-34 PSI in all 4 tires