Bartmon

I had mine do the same thing on my 2008 Silverado...I fixed it by re-connecting the driver seat sensor which is located on the lower part of the seat on the right side near the console...for some reason it had pulled out from the connector.

I had a recent street tune to de-activate the AFM/DOD but the tire light came back on after he flashed the ECM. I'm going to try the relearning process to see if that clears it up.

I thought one of my sensors was bad on my 2008 Silverado because my TPMS light has been on for about a year. FF to yesterday when Discount tires wouldnt balance or install the set of wheels and tires that I purchased off of craigslists w/o removing and using the old sensors from my truck on the new set of wheels and tires. I was going to get them to replace the bad sensor ($60 each) so that damn light would go off but all of the sensors were working per their scan tool. I'm glad I didnt have to shell out $60 per sensor but Im totally confused as to why the light is still on. I'll check the spare when I get home but I cant imagine it having a sensor. any other ideas?