CTS V8-5.7L VIN P (2004)
Power Seat Motor: Description and Operation
Lumbar Support (With RPO Code A45)
LUMBAR MOTOR
The lumbar support system consists of one motor that moves the lumbar support horizontally forward or rearward. The motor contains a electronic
circuit breaker (PTC) that opens in the event of a circuit overload and will reset only after voltage has been removed from the circuit. The memory seat
module provides the motor with a soft stop that will actually stop the motor just before its physical end-of-travel. This decreases the stress on the motor.
If the motor reaches it's end-of-travel due a soft stop and the switch is released and pressed again, the lumbar support will move short distance farther to
it's physical travel limit.