2005 Chevrolet Silverado. Replaced actual heated seat switch. Question = my truck came with heated seats and the driver seat turns on by itself u turn it off and then it comes right back on and it will turn itself off as well it just keeps cycling on and off but the back portion only.
Answer: This could any number of things. A bad heated seat switch, faulty, drivers seat module, a shorted wire under the seat, etc. You would need to use a scanner to view input data from the seat switch to the module,and schematic to trace down the cause.
Question: Hi, I have an 03 GMC Sierra with the 5.3. The driver side heated seat goes on by itself and cycles through the settings. This does not happen all the time. Sometimes it is fine for a week. I have disconnected the battery for a long time hoping to reset the problem but to no avail. Do you have any suggestions?
Answer: There is a unit located underneath the driver's seat which is called the Memory Seat Module. It controls the heated seat function, along with memory positions, etc. You could have a problem with that module, such as an internal short or failure. You may also want to check the wiring under the seat for any pinched or cut wires. This sometimes happens with the back and forth motion of the seat changing positions. Usually if the memory seat module is failing, it would set a trouble code, which can be checked with an appropriate scanner. If it needs to be replaced, there is a recalibration procedure that would need to be done.
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