Front Left Driver's Master Power Window Switch is a direct fit for the following:

2003-2007 Chevrolet Silverado 1500
2003-2006 Chevrolet Silverado 1500 HD
2003-2007 Chevrolet Silverado 2500 HD
2003-2007 Chevrolet Silverado 3500
2003-2007 GMC Sierra 1500
2003-2006 GMC Sierra 1500 HD
2003-2007 GMC Sierra 2500 HD
2003-2007 GMC Sierra 3500

Genuine GM Part Number: 15883322