Parts Geek – For 2007 Chevrolet Silverado 3500 Classic Turn Signal Switch Wells 17788YDBM. For 2007 Chevrolet Silverado 3500 Classic Turn Signal Switch Wells 17788YDBM. Review Fitment Notes to Ensure Proper Fit. Combination Switch — without Cruise Control. 2007 Chevrolet Silverado 3500 Classic. See our other listings. To confirm that this part fits your vehicle, enter your vehicle’s Year, Make, …Read more »