100% quality assurance tested, more responsive, less expensive, easier to install. The transponder keys require programming with an appropriate scan tool. Engineered to ensure proper operation of the ignition key when the cylinder is binding or has failed. Ignition lock cylinder is needed to check within at least every 6 months. Ways to tell you might need a new ignition lock cylinder: Issues powering on the vehicle; Car Won't Start; Key Removal Issues. Part Number:15919460/ 19120038/15794826/ 924-796; name: Ignition Lock Cylinder 09-09 for Buick Lacrosse; 09-11 for Buick Lucerne; 07-14 for Cadillac Escalade; 07-14 for Cadillac Escalade ESV; 07-13 for Cadillac Escalade EXT; 04-09 for Cadillac SRX; 07-13 for Chevy Avalanche; 08-13 for Chevy Cheyenne (Mexico); 12-13 for Chevy Cheyenne 2500 (Mexico) 08-14 for Chevy Express 1500. 08-14 for Chevy Express 2500. 08-14 for Chevy Express 3500 09-14 for Chevy Express 4500. 13-14 for Chevy Express Cargo (Mexico). 13-14 for Chevy Express Pasajeros (Mexico). 09-13 for Chevy Impala. 14-16 for Chevy Impala Limited. 07-13 for Chevy Silverado 1500. 07-14 for Chevy Silverado 2500 HD. 13-14 for Chevy Silverado 2500 (Mexico) 07-14 for Chevy Silverado 3500 HD. 13-13 for Chevy Silverado 3500 (Mexico). 14-14 for Chevy Suburban (Mexico). 07-14 for Chevy Suburban 1500. 07-13 for Chevy Suburban 2500. 07-14 for Chevy Tahoe. 05-06 for Chevy Uplander. 08-14 for GMC Savana 1500. 08-14 for GMC Savana 2500. 08-14 for GMC Savana 3500. 09-14 for GMC Savana 4500. 13-13 for GMC Sierra (Mexico). 07-13 for GMC Sierra 1500. 07-14 for GMC Sierra 2500 HD. 07-14 for GMC Sierra 3500 HD. 07-14 for GMC Yukon. 07-14 for GMC Yukon XL 1500. 07-13 for GMC Yukon XL 2500. 08-09 for Hummer H2. Material: Metal + plastic Color: Silver + black Package Contents: 1 * Ignition Lock Cylinder 3 * keys Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.