I have read the other threads that are related to this but they all seem to stop short of a full explanation. My wife has a 2003 Tahoe LT. When you turn on the heated seats they shut off about 30 seconds later. I have disconnected the pedal sensor and they still shut off and have found no frayed wires under the seat. Does anyone have any other Ideas?

 

We had the same problem happen in an 04 Escalade several years back. Took it to the dealer, they had the replace the whole seats and stuff. You might wanna take it to the dealer and see if they can tell.