Chosen Solution

The drivers side heated seat does not work but the passenger side heated seat does work, any ideas?

Try replacing the fuse. The seat fuse should be in the Center Instrument Panel Utility Block The center instrument panel utility block is located underneath the instrument panel, to the left of the steering column. The seat fuse will be labeled HTD ST There should be a couple of spares in the box. Check for the correct amperage.

Check the fuse.

Some cars, Buick for example, have separate control modules for each front seat. It’s an easy check for your dealer to perform.