Shop Buick Century Lock. Latch. Actuator. (Rear). SRX; w/o Anti Theft Protection; Right. W/passive entry Entry, DOOR, Passive - OEM Buick Part # 13579540 (13503768)

Mechanism to secure door to chassis. Motor to Lock and unLock car door. Passive Access System. Assembly - Side. Controller. Door Motor. Dovetail.

Door Latch AssemblyDoor Lock Actuator Motor

Fits SRX

SRX; w/o Anti Theft Protection; Right. W/passive entry, w/o code: AF8.
Door Lock Actuator - Repair or Replace
Your may need a new door lock actuator if your keyless entry doesn't work or your lock button doesn't lock the doors.