Rear Lower Door Lock Latch Actuator is a direct fit for the following:

2007-2013 Chevrolet Silverado 1500
2007-2013 Chevrolet Silverado 2500 HD
2007-2013 Chevrolet Silverado 3500 HD
2007-2013 GMC Sierra 1500
2007-2013 GMC Sierra 2500 HD
2007-2013 GMC Sierra 3500 HD
Extended Cab Only

Genuine GM Part Number: 20995801