These brackets are bolted to the backside of the bull bar where they are virtually hidden from sight when installed and are then bolted to the vehicle, no drilling required.

This Part Fits:

Year	Make	Model	Submodel
2005	Chevrolet	Silverado 1500 HD	Base
2003,2005	Chevrolet	Silverado 1500 HD	LS
2003,2005-2006	Chevrolet	Silverado 1500 HD	LT
2003-2005	Chevrolet	Silverado 2500 HD	Base
2003-2006	Chevrolet	Silverado 2500 HD	LS
2003-2006	Chevrolet	Silverado 2500 HD	LT
2003-2006	Chevrolet	Silverado 2500 HD	WT
2003-2005	Chevrolet	Silverado 3500	Base
2003-2006	Chevrolet	Silverado 3500	LS
2003-2006	Chevrolet	Silverado 3500	LT
2004,2006	Chevrolet	Silverado 3500	WT
2003,2005-2006	GMC	Sierra 1500 HD	SLE
2003,2005-2006	GMC	Sierra 1500 HD	SLT
2003-2005	GMC	Sierra 2500 HD	Base
2006	GMC	Sierra 2500 HD	SL
2003-2006	GMC	Sierra 2500 HD	SLE
2003-2006	GMC	Sierra 2500 HD	SLT
2003-2006	GMC	Sierra 2500 HD	WT
2003-2005	GMC	Sierra 3500	Base
2006	GMC	Sierra 3500	SL
2003-2006	GMC	Sierra 3500	SLE
2003-2006	GMC	Sierra 3500	SLT
2004-2006	GMC	Sierra 3500	WT