[Skip to last post for the solution]

When I first purchased the car last August, the reading on the LR wheel pressure on the DIC was always a few psi low of my tire pressure gauge reading. The other 3 wheels TPMS readings matched my tire gauge. Then I swapped out the 12V battery a few days ago and now it just reads "--". The other 3 read perfectly as always. Then the TPMS system tire icon started to flash and now stays on steady with a "Check tire monitor system" message. So I'm guessing I have a bad TPMS sensor and just ordered one. I know these can be manually be re-taught using the DIC, and haven't tried that yet because I know this TPMS has been questionable (and the car probably ran the test when I installed the new battery). Here's my question. How do I test the new TPMS and also make sure it's the left rear as shown on the DIC? I know Amazon has a tool for less than $10 that can test them. @X25 you have done this as I saw in an older thread (You tested each corner to find the bad TPMS). But see my below question for an even easier test.

1) Can I trust that the DIC is identifying the correct corners? In other words is it really the LR? I don't want to take the wrong wheel to the tire shop (don't want to take the car).
==> Yes this works. Only take the tire and the new re-taught TPMS to the tire shop.

2) Can I test the new sensor to make sure it works by simply taping it down in the hatch next to the left rear wheel well? Then run the DIC test?
==> Yes only with the Relearn tool. See last post. Just held the new TPMS in my left had near the bad TPMS. It worked.

3) Or maybe it will auto learn just driving for 10 minutes over 12 mph? This would be really easy. It would communicate, but read 0 psi.
==> No this will not work, TPMS needs to be in the tire while your drive to "Auto learn". See X25's post #2.

TPMS sensor I bought Schrader 20223 (be careful of $18 ACDelco one on Amazon, may be counterfit):
https://www.rockauto.com/en/moreinfo...pt=12036&jsn=1
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TPMS Tool on Amazon:
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Old thread:
https://www.corvetteforum.com/forums...tpms-tool.html
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My 2 cents:
I'm not sure if auto-learn works at 0 PSI, but the manual learning definitely works. Once you get the new sensor, you can indeed do the manual learning by leaving the new sensor by the corner outside the car, and see if everything learns with the new sensor showing zero pressure. I did that myself, too...

When sensors work, the corner info is definitely correct, but in one case, I've seen the car moving up which sensor is where when one if then was faulty.

I hope this helps : )

 

That helps a lot, thanks for the quick response.

So I'll just set the new TPMS next to the rear wheel in my garage and run the manual DIC test. Easy enough. Then I'll take the wheel to the tire shop and have them install it knowing it's the correct wheel and the TPMS actually works (I've read posts where they can be bad out of the box).

PS: I saw this tool referenced in the service manual and just bought one. That way I have another avenue to teach them if the DIC can't do it manually or auto. Basically the same tool that dealers use. X25 you used this or similar tool from old posts I've seen.

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I purchased 4 new TPMS from Amazon for my car. Followed the basic programing procedure, all 4 worked just fine. No need for any gizmo. I will try to fine the instructions.

 

To program TPMS sensors in a C7 Corvette, you'll need to put the vehicle into learning mode, then either manually relearn the sensors by driving or use a TPMS tool to scan and program them.

Here's a breakdown of the process:
1. Enter TPMS Learning Mode:

• Manual Method:
  Turn the ignition to the "ACCESSORY" position, apply the parking brake, and press the "LOCK" and "UNLOCK" buttons on the keyless entry remote simultaneously until you hear a horn beep.
• Steering Wheel Method:
  Scroll to the Tire Pressure screen on the DIC using the controls on the steering wheel, then press and hold the "SEL" button until you hear two horn beeps.

2. Relearn Sensors (Manual or TPMS Tool):

• Manual Method (Driving):
  Drive at or above 12 mph for 10 minutes to allow the system to relearn the sensor positions.

 

Nice write-up thanks.

 

We have two sets of wheels/tires (PSS and AS4) for our 2017 Z51 A8. TPMS sensors are ordinary GM stock.
Every Fall I have the local Discount Tires put the AS4 set on the car, every Spring they remove the AS4 set and install the PSS set.
They don't do anything to help the system re-learn (I've asked, and I've also watched what they do), they just physically swap the wheels/tires and I leave.
Sometimes the car learns the new sensors within a mile or so, very occasionally it takes up to about 10 miles of driving for the relearn. But nothing is done except driving the car. Nice.

 

I have 3 sets of wheels and tires. I bought sensors from Rock Auto. I just install them and put them on the car 2017 C7 Z06. I have never had to program them and they just work. On my wife's Denali I have to use a programmer to set them at each wheel.

 

Recap what I wanted to accomplish:
1) I only wanted to replace one sensor.
2) I wanted to make sure the sensor was good before I took it to the tire shop (for this I needed the relearn tool).
3) I didn't want to take my entire car there. Just the one wheel/tire with the bad TPMS.
4) The people who posted that all they had to do was swap tires and the car re-learns it automatically. Correct. But that's now what I'm doing here

I'd like to thank member @X25 for the help. He had already done, several times, exactly what I was trying to do here. I bought the Schrader TPMS 20223 and the Amazon EL-50448 Relearn tool. Links below. The Relearn tool wasn't working at first but then tried a new battery and it worked perfectly. You enter the learn mode from the tire monitor screen by pressing and holding SEL until the car horn sounds twice (ebrake on, engine on). Then just follow the car lights CW around the car. Press and hold the button on the relearn tool while holding it near the valve stem until the car horn sounds (1 time). Then go to the next tire. The last one was the bad TPMS. I just held the new TPMS in my left hand near the tire and the tool in my right hand. It taught it. After the last tire is done the car horn sounds twice to tell you relearn is complete. So I now have all 4 sensors programmed (the new one outside the tire reads 0 psi). I can just take the one tire and new [pre-learned] TPMS to the tire shop and have them install it for $35. Then take it home, put the wheel back on the car, and all 4 will read. I don't have to take the entire car there. If it happens again, I know how to do it.

https://www.rockauto.com/en/moreinfo...pt=12036&jsn=1

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