I've been chasing a TPMS issue for quite some time. Had replaced the TPMS 3 years ago with with brand new OEM sensors. Worked for awhile then kept getting random XX readouts. Most recently, the driver's rear would show XX after 20 min of driving.

Purchased a new OEM TPMS, took the wheel over to discount tire this morning.
Got lectured by the 18 year old about how their sensors are better than oem, why did I just bring them the wheel instead of the entire car, etc. Got the wheel home with the new sensor installed and couldn't get passenger rear to program. The new sensor in the driver rear programmed fine, and then I tried the sensor DT removed and it also programmed.

Removed the passenger rear wheel, headed back to DT to have it swapped with the one they removed earlier. Bingo, bango, all TPMS programmed to the car. Let's hope this remedies the problem. Moral of my wasted 3 hours back & forth is to check the sensors before replacing them & don't rely on the DIC.

Side note, while waiting in line at DT the second time I witnessed an suv get t-boned on the highway and roll 4-5x. Ran out to help & at least 10 other people stopped to help. We were able to roll the suv back onto its wheels so we could get the door open and help the driver. Awesome display of humanity!

If you don't know basic rescuer first aid, I encourage you to take a class. This was the 2nd time in a little over two months I've been able to render aid to someone involved in an accident until paramedics arrived.

 

Wow, perfect post timing @JABCAT
Disconnected my (-) battery terminal last week to fix broken wire on seat motor and when reconnected battery had FT LT TPMS showing XX and MIL light on the cluster and Service Tire Monitor on the DIC.
New one ordered and hope that's programming is all it needs. I've read where the XX can be a communication issue as well. I'll be sure to hold the new sensor in the location to be programmed before actually replacing it to ensure it takes.

Glad to hear you and others went to help and agree everyone should take the time get a basic cpr/aed/first aid, etc class. I've even thrown in a Stop The Bleed class and carry an IFAK (Individual First Aid Kit) in the car.

 

Unfortunately, the new TPMS didn't solve my TPMS issue. Everything worked for about 100 miles of my 700 mi trip yesterday, then started reading XX. Even had an unscheduled stop & had 4 new tires installed. Reprogrammed the sensors to the car - all programmed. Then 15 min later 3/4 read XX & stayed that way for the next 9 hours of the drive.

I'm so over the stupid TPMS in this car.

 

Although, not a Corvette, my Yukon with new sensors (OE type ACDELCO) will work fine all day long with low speed driving. But as soon as it runs sustained 50+ MPH driving for 15-30 minutes one or more sensors will stop sending pressure readings and gives XXX. The sensors will return to normal operation once low speed driving occurs again. Weird.

 

And which lights in the car did you swap to LED bulbs?

Hence banking that problem is enough RF noise, that is blocking the TPMS signals to the RCDLR antenna's.

If this is not it, then would pull the RCDLR to check is connector header pins solder joints to the board, if it seems to be intermediate problem.

 

All interior lights are OEM. I have Morimoto headlights, tail lights & oracle smokes side markers front & rear. All these were on my GS with no issues with TPMS. The TPMS have been acting up since the day I got the Z.

 

Still going with RF noise problem, but if the problem is happening at one end/corner of the car, like say the back, would clean the RCDLR antenna connector in the back of the car, as well as pull the RCDLR to check it's head pin solder joints for cold solder joints. Also if from the start before the LED lights, would double check the connector wires to connectors, since may be a crimp joint problem on one of the wires to connector pin as well.

 

Have you upgraded brake hoses ?
This may sound crazy, but SS braided brake hoses have been the known culprit of wheel speed sensor anomalies, maybe this could affect tpms as well ?

 

No upgraded brake hoses. There's got to be something with the communication because all the sensors show active on the tire shop reader & I can program them to the car.

 

I thought you were suspicious of EMI from the head unit and its wiring and had gone though an exercise of trying to put shielding around those items. Or was that in your GS? If you’ve got a non OEM head unit I’d still be suspicious if that regardless if whatever shielding you put in place. Can you pull the fuse for the head unit and see if that makes a difference?

 

Helping others is a wonderful thing, thank you for trying.

However, any trained firefighter or EMT will tell you this is exactly what NOT to do. There is a thing called mechanism of injury. The individual(s) in this type of wreck just experienced the most violent action, and even if belted, may very well have cervical spine injury. To “roll the suv back” can very well cause just enough movement to permanently paralyze someone who has been in this type of incident.

Unless the vehicle is on fire, in water, someone partially ejected and crushed, etc, the best thing you could do is try to stabilize the vehicle if possible, and wait till the calvary arrives 👩🏻‍🚒

 

I did shielding around the head unit, wires, etc. awhile back, no difference. I'll dive into it eventually. Just don't have the time to take it all apart again.

 

I fully understand how this works, and it was being rolled back over as I arrived to help. There was no way to get to the driver to see how badly they were injured or what aid needed to be rendered as it had ended up on the driver's side. It took over 10 min for the first emergency vehicle to arrive on scene. Leaving them in that position could've caused just as much damage/further injury. Sometimes you have to make a decision based on the available information.

fwiw - many in my family are LEOs and my father is a retired fire marshal.

 

I won’t pick apart your reply, as your willingness to help others is commendable. However, still entirely wrong.

• Over 31 years on city FD, 9/11 responder and survivor, and incident commander at multiple major incidents •

Edit: oops, forgot “fwiw”. In actuality, not much, everybody was already f’n dead. Even now, most of my friends who were there are now sick, or worse.

If you’d like to learn more, become an EMT, or take a course or two. You’ll learn more about what I mentioned earlier, and other things like standard of care, and so on.

Regarding your attempt to “help”, if I ever got on scene and saw one of my crews attempting that, the IC would have a lot of explaining to do, and may even face formal charges.