Lumbar Motors
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The lumbar support system consists of two lumbar motors, horizontal and vertical, that operate independently of each other. The lumbar horizontal motor moves the lumbar support forward or rearward and the lumbar vertical motor moves the lumbar support up or down. Each motor contains an electronic circuit breaker (PTC) that will reset only after voltage has been removed from the motor.