Cadillac A/C Air Door Actuator 15939657 precisely adjusts air output direction

Cadillac CTS/SRX (2007-2013) and ATS (2010-2015) HVAC blend door actuator (part number 15939657), compatible with 2.0T, 3.0L, 3.6L variants. OEM numbers cover 15939657, 19130407, 25740395; drives the blend door to adjust airflow to face, feet, or defrost. Replacement difficulty medium; first check gear wear in the original actuator.