<p>Includes: - Combination Switch</p> <p>Fits Models: - GMC Sierra 1500 HD</p> <p>Model Years: - 2003</p> <p>Submodels: - Common trims include SL, SLE, SLT; body style is Crew Cab, Extended Cab, Regular Cab; chassis code is GMT800.</p> <p>Engine Options: - Common engine sizes include 4.3L V6, 4.8L V8, 5.3L V8, 6.0L V8; engine codes may include LY2, LM7, LQ4.</p> <p>Description: This combination switch is designed specifically for the 2003 GMC Sierra 1500 HD, providing reliable control for various electrical functions. It is an essential component for maintaining proper operation of lights, wipers, and turn signals.</p> <p>Features: - Direct replacement for the original part - Ensures proper electrical function - Durable construction for long-lasting performance - Easy installation with no modifications required</p> <p>Part Numbers: - ALX-PAU-SI-CBS-1426-CLB12</p>