Strattec/OEM #707835 + 706592 X2 + 5928818 X2 Chevy Factory Original Ignition Switch Lock Cylinder + 2 (Pair) Door Locks Cylinders + 2 OEM GM Logo Big Head Keys and 2 OEM GM Logo Small Head Keys. All 4 keys work in all 3 locks! ATTENTION: THIS SET FOR MODELS WITH AUTOMATIC TRANSMISSION ONLY. IGNITION AND DOORS LOCKSET Fit: Cadillac Escalade 2003-2006, Chevy Avalanche 2004-2006, Chevy Silverado 2003-2006, Chevy Suburban 2003-2006, Chevy Tahoe 2003-2006, GMC Sierra 2003-2006, GMC Yukon 2003-2006,Hummer H2 2003-2007 FIT MODELS LISTED ABOVE NOT SURE? EMAIL ME WITH YOU MAKE AND MODEL Avoid high repair costs from your local dealer and repair it yourself. Im certified locksmith and replace those many times and if you have any questions concerning this product or other lock needs do not hesitate to email me.