Tire Pressure Monitor ?

2013 CHEVROLET CAMARO
16,000 MILES • 6.2L • V8 • RWD • MANUAL
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PJM333
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My car is stock. since 06/13 and in September of 2013 started to get warning light for TPMS of the left rear tire. Brought it back to dealer multiple times, but they could not duplicate the problem. In April of 2014 started getting "Service Stabilitrack code U0401 and Check Engine Light code P0300" warnings along with the TPMS warnings. The car has been in the dealer fourteen times and I gave them the above codes but four different dealers could not fix the car. After a lot of research I figured it was the ECM causing the problem, had it replaced in September 2015 and all of the warning lights stopped.
Drove it for around five months with no problem but then the TPMS started again and the dealer has no answers ? I was told by someone that the Body Control Module and Powertrain Control Module connectors need to be replaced or there connections are loose ?
Oct 9, 2016 at 6:05 AM
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SATURNTECH9
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So is it still saying left rear tire is low? do you have any codes in the TPMS computer?
Oct 9, 2016 at 2:08 PM
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PJM333
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Now it can be any of the tires or all four at once and there are no codes. Thanks !
Oct 9, 2016 at 2:20 PM
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SATURNTECH9
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Have you set the tire pressures to what is on the tire sticker on the drivers side with a accurate tire pressure gauge? Also, you could have the batteries/sensor failure starting to happen.
Oct 9, 2016 at 5:18 PM
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PJM333
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I manually check and set the tire pressure, how would I check / know about the battery sensor ? Thanks !
Oct 10, 2016 at 3:56 AM
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SATURNTECH9
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The problem I had is the tire inflate I was using was off by 6 psi and setting off tire pressure monitor light's.Your absolutely sure that the tire pressure gauge your using is accurate?I have a astro pneumatic digital gauge tire inflator I love it and works great with tire pressure monitor system's.As far as codes you would need a advanced scan tool that can read tpms computers.A diyer scan tool can't read all computer codes just engine and transmission codes.You would need a tpms reader that you can put over by the valve stem to see if the tpms sensor is broad casting.That's why I asked about the tpms codes.The tire pressure is incorrect or you have a bad sensor or a Computer issue .But we need to start by making sure pressures are for sure set correctly.
Oct 11, 2016 at 8:44 AM
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PJM333
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Sorry for not getting back sooner. I have 3 tire pressure gauges and they all read the same psi. My code reader is a basic one but have brought it to the dealer and used there code reader and had the same results. Thanks for your help.
Oct 21, 2016 at 12:49 PM
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STRAILER
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I heard my buddy at the dealer replaced all of the tire sensors at once. It's like they get out of sync. It did fix the problem.

Let me know what you find.

Best, Ken
Oct 21, 2016 at 4:14 PM
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SATURNTECH9
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You could have a battery going dead in one of the sensors.
Oct 21, 2016 at 8:30 PM
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SATURNTECH9
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Usually you will get 5yrs out of the battery on the sensor unless it gets damaged by moisture.usuallys sets a code for a low battery or faulty sensor.
Oct 21, 2016 at 8:34 PM