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TPMS system constantly losing connection

whitestingray81

New Member
Joined
Jul 26, 2020
Messages
7
I have this reoccurring issue in my 2007 Avalanche LT (5.3 Flex, 4wd). I will be driving along, and I will get the "service tire pressure monitoring system" error, and at least one tire has lost signal with the 2 dashes. It is USUALLY my front, driver's side sensor, but it can be any of the sensors. I have the relearn tool, and always manage to relearn it, and it will go away for a couple of days, but always returns. Sometimes, it comes back on its own before I can stop and do the relearn.

I bought a new sensor, and programmed it, and drove to the tire shop, just in to rule out a faulty sensor, and on the way the NEW sensor also lost connection, so it's not a sensor issue. Could it be the RF module? What other issues could it be? The remote door locks always work, if that matters. Does the RF module have to be programmed by a dealership, or can any shop do it? Thanks!
 
I bought the relearn tool also when I replaced all my Tpm sensors but they wouldn't stay learned I had too take it too a tire shop and they had too actually plug into the odb ll port and tell the computer they were there haven't had a problem since
 
Okay, this is a really odd issue I'm still having. I've had the TPMS sensor in the front left tire replaced 3 times. I have a scan tool, and I can see that after 10 minutes of driving above 35 miles per hour, the pressure maxes out, and the sensor never goes out of learn mode, and into "drive" mode. I have done the relearn dozens of times, and so has 2 shops, and it ALWAYS loses connection after 10 minutes of driving. It appears to be stuck in learn mode, but it's not a sensor issue. Has anyone ever run into this problem before? I even learned the tires out of order, and the same sensor that was in the front, driver tire loses connection.
 
I had a similar issue in my 08 when I first bought it. Batteries were dead. Maybe faulty??? Also I had an issue where the light was constantly on and took to the dealer one day and they managed to fix it to actually turn off when tired are inflated properly
 
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