<div data-store-description="v1"> <p>Ignition Switch with Door Lock Cylinders for GMC Sierra 2003-2007. Supplied product details follow.</p> <h3>Specifications and fitment</h3> </div> <p>Includes: - Ignition Switch &amp; Door Lock Cylinders</p> <p>Fits Models: - Chevrolet Silverado - GMC Sierra</p> <p>Model Years: - 2003–2007</p> <p>Submodels: - Common trims include WT (Work Truck), LS, LT, LTZ, and Denali - Chassis codes: GMT800, GMT900 - Body styles: Regular Cab, Extended Cab, Crew Cab</p> <p>Engine Options: - Common engine sizes include 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8, and 6.6L Duramax Diesel - Engine codes: L33, LM7, L59, LQ4, LBZ</p> <p>Description: This ignition switch and door lock cylinder set is designed for Chevrolet Silverado and GMC Sierra models from 2003 to 2007. It ensures reliable starting and secure locking for your vehicle, providing a perfect fit and function.</p> <p>Features: - Direct replacement for factory parts - Ensures proper ignition and locking functionality - Durable construction for long-lasting performance - Easy installation with no modifications required</p>