<p>Includes: - Combination Switch</p> <p>Fits Models: - GMC Sierra 3500</p> <p>Model Years: - 2003–2006</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 6.0L V8 (LQ4), 8.1L V8 (L18), and 5.3L V8 (LM7).</p> <p>Description: This combination switch is designed specifically for the GMC Sierra 3500 from 2003 to 2006. It controls various functions including headlights, turn signals, and wipers, ensuring seamless operation of essential vehicle features.</p> <p>Features: - Direct fit for GMC Sierra 3500 models from 2003 to 2006 - High-quality construction for durability - Easy installation with no modifications required - Restores functionality to lighting and wiper systems - OEM part number for guaranteed compatibility</p> <p>Part Numbers: - ALX-PAU-SI-CBS-1149-CLB19</p>