Hummer H2 front seat heaters malfunctioning with lights flashing and no heat output on Hummer H2

Submitted by Dr. L · Jun 23, 2025
Published by RepairPal

Problem overview

Some Hummer H2 owners report experiencing malfunctioning front seat heaters, characterized by flashing lights and no heat output. This issue may stem from worn-out or fried seat heating elements, which prevent proper heating. Additionally, problems with the electrical connections or wiring related to the seat heaters can lead to these symptoms. Some owners have identified potential faults in the heated seat module or memory heated seat module that could affect heater operation. Furthermore, since the front seat heating elements and sensors are hardwired to these modules, any malfunction there could also be a contributing factor. Lastly, issues with the driver seat module, which controls the seat heater elements through inputs from the door modules, may also play a role. It is advisable for owners experiencing these problems to seek professional assistance for a thorough diagnosis and repair.

16 people reported this problem
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Hummer H2 vehicles with this problem

Average mileage: 113,120 miles
(25,000 - 191,788)

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