:cry So talk to me about this, I know it means one or more of the sending usnits isn't communicating with the sensor. I know it's not really a big deal, but the light BUGS me and I want to fix it. It just started yesterday and came on every time I drove it today after I was going for at least 5-10 mins :cry

 

This is a cheap way to fix your LTPWS light; take out the fuse. The only downside to this is that the fuse is also the fuse for your cruise control. My cruise control is out of commission for the time being anyway, so I had no problem removing the fuse to make the LTPWS warning light go out. :)

 

It's an idea since I never really use the car for long trips and therefor don't use the cruise, but what could it be (ie, sensor or units) and how much will it cost to get fixed?

 

Use a caper clip and jump the A to B terminals of the ALDL connector(first two on the top right) and turn the key on and watch the service low tire pressure light and get the codes and let us know what ther are, after you know what it is you will know if you wan to get it fixed or not. That is if you are talking about your 93.

David Fulcher

 

I removed the bulb in mine, takes about 10 min. Be sure to disconnect the battery before removing the DIC.

 

DAVID! My favorite tech support! Ok, well you AND peteL! I did not know that reading the codes on the 93 is same as on the 85! Easy enough, I already have a paper clip set just right from heavy use with the '85 :crazy: :D

Ok, just did it. The regular check engine only flashed the regular 12, but the Service LTPWS flashed 4 times

 

Pulled the bulb on mine. Don't have runflats anymore anyways. :D

 

If '93 is the same as '92, it should flash a two digit code. The codes for the wheel sensors are 24, 34, 44, and 54. Code 99 is a receiver fault. Any code will be preceded by code 12. If your's is flashing 4, it may be a code 44, which would indicate a faulty left front sensor. Code 44 would be four flashes, a short pause, and another four flashes. It would do that a total of three times. Again, this information is for a '92, but there's a reasonable chance '93 is the same.

I got the codes from mine a while back and got all four sensor codes. I know all four sensors aren't bad, so I have no idea what might cause that. I just live with the light when it occasionally comes on. Good luck!

 

Rip the bulb out and be done with it.

 

Thrills,
I would go ahead and try to fix it in your case. You don't seem like a racer from your post so handling, traction in 1/4 etc with street tires are not so important to you. i'm assuming getting home in one piece is. The runflats are great for allowing you to get off the highway when the tire has zero pounds of air in it. Keep in mind if you do keep the sensors and the system active don't ever install non-runflats. With non-runflats if the tire goes to zero pounds of air, your will crush the sensors in the wheel. Also if you disable the system switch over to non-runflats since with no active system it's hard to tell when the tire ahs no air. Take a turn hard like this, could be bad news. I also don't like the stiffer ride with runflats.

The system consist of a module in the dash the receives the radio signals from the sensors in the wheels. Could be the sensor or bad module.
:cheers:


[Modified by ConeKLR, 12:23 PM 1/22/2002]

 

On my 92, same problem. I'm getting three codes for the sensors. But the car has been parked in the garage all winter, and I want to drive it, then check it again.

I do not have run flats. I didn't even know it was an option in 92. I was considering just removing the bulb and checking the tires frequently. Anything wrong with that?

I've also been told, it's almost impossible to get replacement sensors. Don't know for sure, haven't tried. Is there a fix for the sensors without buying new ones or is there anyplace that rebuilds them?

 

Strange it's just putting out "4", and nothing else. Wee see what David thinks.

Run flats were not available until 94, LTPWS was available since 89.

Don't know if Chevy has stock on the sensors, but TLD had stock last year when I needed one.

 

Pete, I suspect, as someone mentioned it was probably a 44 not 4. I was busy trying to count codes for both so I'll check again when I get home and see.
Hopfully TLD has sensors if it is one!! I just got my centercaps for the Ruby from there :D How much was it Pete? (ballpark is fine)


[Modified by thrills, 12:19 PM 1/22/2002]

 

Get ready: $127.00 including the strap - and that was almost two years ago! I waited to put it in when I put new tires on.

Here is something to consider with this, the wheel sensors (at least on my 89), can be mixed up and the receiver does not know the difference. The receiver just knows that a sensor that should be positioned at the RF (or what ever code) is not reporting. This may be different on the 93, but it's true on my 89.

So I had to confirm that it was (in my case "blue")the sensor that was indeed out. I did this by following the manual proceedure to reduce pressure one tire at a time and drive for a while. Each sensor would report "low tire pressure" except the bad one. I now knew it was the front right in my case, as it did not report the low pressure. Then I had the shop pull that tire to confirm that the front right (blue) sensor was in that wheel! It was, and it was crushed (must have been a flat). So I over-nighted a sensor from TLD.

Each sensor is color coded, and should correspond to a wheel location (color code, part number and location in 93 shop manual). But if it was rotated or for some reason the location changed over the life of the car, the 89 receiver would not know this and the system would work fine otherwise.

Pete

 

Yikes! $$$$ :crazy:
May be worth it for people who feel they need the system. I remember seeing a web site the contained info on repairing the sensors. Had pics and everything on repair. If i can find it i'll include it here.


Nothing wrong with using non-runflats as long as the sensors are removed. Well, if you don't care about saving the sensors then it does not matter. First flat you get you will crush the sensor, no biggy. Check air as usual with other cars, check every week. I feel a big issue is when you use runflats with a car that has no warning system or system disabled. With a non-runflat you can tell when the tire is at 15lbs. Runflats can go very low like 10lbs and still feel like it has 30lbs. You can have zero pressure and the tire sidewall will be hard as a rock. Example why this is bad: If you go shopping for some time, come back out, get in your vette and drive off. A mile down the road you decide to drive like mario andretti onto the on ramp. Little did you know all the air came out of the runflat tire while shopping. You tell me what you think can happen at that point :yesnod: :eek: :crazy:
My vette was sold to me from Kerbecks in Atlantic City, NJ as having this option. Option code is listed on RPO. Problem is they or previous owner cleared the code. The wheels do not have the sensors inside. Light came on about 300 miles after i bought it. I just pulled the bulb since I don't care about having it work. Some say pull the fuse. But that disables your cruise control. Takes 10 minutes to R/R shifter console and remove bulb.

 

Just let them fix it and have it break again, it's a never ending battle. :rolleyes:
http://hometown.aol.com/scotfab/old_proj1.html
http://hometown.aol.com/scotfab/old_proj1a.html

 

Pete, I don't have a manual for the 93, but I think the front tires are are narrower than the rear so it muct be one of the front sensors. I'll call TLD tomorrow and see if they still have them, I could not find them by a search on their site :( Lets hope though, I hate having things broken, even if it is something small :mad

 

I would have to agree with BlackbirdZO7 I think you are getting a code 44 which like the 92 would be a left front tire pressure sensor color green. I add the color here also just incase the sensor is in the wrong location or there is two of the same sensor on the car, and I have seen all of it before. Now I wish this was a 100% correction but because it's a very simple system with very little self diagnostics there can be a rare chance that the reciver could be faulty but untill you replace the sensor you can not tell there is no test especialy with something that can be intermitten. But most likely the sensor is the problem. Now to clear the code just use the paper clip like before but instead of pushing it in all the way into the ALDL terminals just touch the two terminals together three times within 10 seconds and then you should see both the Service LTPWS and Low Tire lights come on letting you know it has cleared the codes now just turn the key off and you are set to go. Now as for the car with all 4 sensor codes, try clearing all the codes then driving the car and see if one or all the codes set again, if they are all setting you will need to have a tire removed to see if there are sensores on the wheels at all, again I have seen this many times before, then you can decide if you want to replace all 4 sensors or just remove the reciver(or bulbs).


David Fulcher

 

Did I miss something? Just didn't see the "what's your tire pressure thrills?" comment yet :o)

ok, ok - guess it's a given we skip that step ...

Hey - thats a pretty neat short cut using a paper clip then using the Tech 1 hand held diagnostic tool!!

I am aware for the ZR-1's anyway, and someone may confirm the standard model is the same, '90-'92 sensors can be removed having the car still drivable but '93-'95 is not that easy.

For the '90-'92 - sensor part numbers are:
GM #
10098494, Blue - Right Front
10098495,Green - Left Front
10098496, Orange - Right Rear
10098497, Yellow - Left Rear ......

and from what I've seen there are places on the net where these sensors can be bought new for just under $100 (plus shipping of course) (Gm list price is $166) ...
:eek:

 

The tire shop busted one of my straps and I told them to leave out the sensor. I didn't get a code on my 91. (never have)