Kwikset SmartCode 916TRL Traditional Electronic Deadbolt with Zigbee Technology L03 Lifetime Polished Brass Grade 2 HES Years Vehicle 1999 2006 Cadillac Escalade Years Vehicle 1999 2006 Cadillac Escalade 1999 2006 Chevrolet Astro 2001 2006 Chevrolet Avalanche 1999 2006 Chevrolet Blazer 2005 2006 Chevrolet Equinox 1999 2006 Chevrolet Express 2003 2005 Chevrolet Kodiak 1999 2006 Chevrolet S10 1999 2006 Chevrolet Silverado 1999 2006 Chevrolet Suburban 2002 2009 Chevrolet Trailblazer 1999 2006 Chevrolet Van 2003 2005 Chevrolet W4 Compatible electronic cylinders Medeco Nexgen XT or VIDEX CyberLock SFIC cylinders Includes For 1 1 4”barrel length locks: 20 minute fire rating UL certified The lock allows the user (through a web enabled device) to remotely check the door lock status