Fog Lamp is a direct fit for the following:

1999-2002 Chevrolet Silverado 1500
2001-2002 Chevrolet Silverado 1500 HD
1999-2002 Chevrolet Silverado 2500
2001-2002 Chevrolet Silverado 2500 HD
2001-2002 Chevrolet Silverado 3500
1999-2002 GMC Sierra 1500
2001-2002 GMC Sierra 1500 HD
1999-2002 GMC Sierra 2500
2001-2002 GMC Sierra 2500 HD
2001-2002 GMC Sierra 3500
2000-2006 GMC Yukon
2000-2006 GMC Yukon XL 1500
2000-2006 GMC Yukon XL 2500

Genuine GM Part Number: 10385054