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I need to purchase new sensors. The question is GM or Schrader? Doesn't Schrader make the sensors for GM? The Schrader sensors are half the price from Rock auto.
As far as we know, Schrader makes the sensors for GM.
There are counterfeit sensors, but usually not in real GM packaging.
Lots of tire stores will use some other brand and claim they are just as good. Maybe.
It costs a few more bucks, but I just buy sensors from our local Chevy dealer. I don't want to be trying to diagnose sensor problems on a road trip a thousand miles from home.
Get the Schrader's from Rock Auto. Don't bother paying the premium "GM" price. As was mentioned it's believed to be Schrader who makes GM's TPMS. GM does not make their own TPMS units. They rebadge someone else's unit. Numerous people (including myself) have bought the Schrader's from Rock Auto and haven't had any issues. I did have a couple sensors made at a different plant and so the housing was different but that's just cosmetic. They have all worked flawlessly for the past year.
I would only buy a Schrader sensor (part number = 20223), or a genuine GM sensor (part number =13598775, made by Schrader). The GM sensor comes in a sealed bag, marked with GM logos.
Check the date-code on the sensor to make sure you are getting one with a fresh battery.
The Date code is printed on the black plastic side edge of the sensor, white ink, formated:
the "xx" is the year ("26" = 2026)
"yyy" is the day of the year (1 to 365)
"CCCCCCCC" is the unique ID number of that sensor, that gets learned to the TPMS system
"13598775" is the GM part number on a GM labeled sensor.
"20223/3033" is the Schrader part number for the replacement sensor
Last edited by ersatz928; May 19, 2026 at 04:59 PM.
Get the Schrader's from Rock Auto. Don't bother paying the premium "GM" price. As was mentioned it's believed to be Schrader who makes GM's TPMS. GM does not make their own TPMS units. They rebadge someone else's unit. Numerous people (including myself) have bought the Schrader's from Rock Auto and haven't had any issues. I did have a couple sensors made at a different plant and so the housing was different but that's just cosmetic. They have all worked flawlessly for the past year.
As long as it works flawlessly, life is good. However, when you bring your parts into the shop for install, just be aware that they can and often put on the invoice "Installed customer supplied (insert part/parts here)", IOW, if this goes south, you go find the seller and warranty it with him. Can't say I blame them. I didn't sell you the part and make profit on it, I won't be responsible if it fails.
I need to purchase new sensors. The question is GM or Schrader? Doesn't Schrader make the sensors for GM? The Schrader sensors are half the price from Rock auto.
Thanks
JMO342
I just installed new sensors when I replaced my tires a few weeks ago. For my '19 Stingray M7, I used the Schraders
Assuming you are not installing it yourself and the seller is different from the installer, what will the installer do should a sensor fail?
Tell you there's nothing they can do about it because you didn't buy it from them and that you'll have to work with the seller/manufacturer to get it replaced and that you'll have to pay to have the new one installed. They will also likely say they will gladly sell you a new sensor and warranty it for X period of time.
I was told by Costco that they can't guarantee the sensors I bought would work with my car and there's nothing they can do if they don't work. Also said I could use the ones they sell. They said the right things that covered their ***. I'd expect most shops to do the same.
I think i will be dealing with option #2 for sure.
JMO342
Therein lies the issue. Is it worth it to buy your own and have them install it and if it fails, you pay them again to redo? If the difference is very significant, I'd be willing to risk it. OTOH, if it isn't, why take the chance that it fails to register or fails shortly and they charge you to redo? BTDT with a transmission. When it failed, the builder blamed the parts suppliers and the parts suppliers blamed the builder. In the end, I had to redo on my dime or my car would still be in my driveway.
Tell you there's nothing they can do about it because you didn't buy it from them and that you'll have to work with the seller/manufacturer to get it replaced and that you'll have to pay to have the new one installed. They will also likely say they will gladly sell you a new sensor and warranty it for X period of time.
I was told by Costco that they can't guarantee the sensors I bought would work with my car and there's nothing they can do if they don't work. Also said I could use the ones they sell. They said the right things that covered their ***. I'd expect most shops to do the same.
I would say that Costco was being fair. You saved some money but your risk increased so you had to be ok with it. I have also seen a repair shop submit a labor claim to the parts house for a failed caliper and that chain had to shuttle them a new one and pay them for the labor to reinstall. If the parts house has to do that, why not you?
TPMS sensors
