Buick Repair Questions? Ask a Mechanic for Answers ASAP
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Did only the drivers side stop working or all of them?
It sounds like a thermistor in one of the seats have failed. Test resistance of each seat thermistor with an ohm meter. Should have(NNN) NNN-NNNNohms at room temperature and replace if out of spec. Here is a wire diagram, make sure fuses shown on diagram are not blown.