Have a 08 Ascender and was driving down the highway and the tpms light starts flashing and after a minute went solid . Took it to mechanic and for some reason their tool could not read my one and half year old GM tire sensors. Just replaced a little while ago. So they replace 2 with whatever brand they use and then they couldnt read the other two so they replaced those too . They reset the sensors and on my way home light comes back on with the same indication , have no DIC on this vehicle . So I take it back they do a relearn again ,light goes out and they can see all 4 on their tool, Head home and same thing starts flashing then goes solid . I decide to do the manual reset where you let air out and that seems to take . Take it out and about 10 minutes into the drive light comes back on . At this point I dont think its sensors so what might it be ? The LCM gone flakey ? These systems are ridiculous, wish they could just turn it off . Not sure it is worth spending on a new LCM if thats the issue seeing vehicle is 10 years old and has 125000 miles on it . Just annoying having that bright yellow light on . Is there a way to just reset the LCM by pulling a fuse or something without killing the battery .Advice appreciated.