The product is an ignition lock cylinder and housing suitable for 2000-2006 Chevy, GMC, Cadillac, and Hummer vehicles. The interchange part numbers include Ignition Switch: 924-713, US-312L, Ignition Lock Cylinder Housing: 26093782, D1469G, 26075081, and 88965342. The manufacturer part number is CL-01. This replacement part is essential for ensuring proper functionality of the ignition system in the specified vehicle models.