The Turn Signal Flasher in these GMC trucks controls the familiar blinking of the indicators so surrounding traffic is informed when the driver intends to turn or when hazards arise. Upon nudging the steering-column lever, the Turn Signal Flasher is activated, sending current through a relay that opens and closes a circuit very quickly, creating the on-off rhythm of the bulbs. The early models of Sonoma had a thermal Turn Signal Flasher that heats a spring steel strip, its repeated flexing producing both the flash along with the click sound. Later model GMC pickups adopted a solid state Turn Signal Flasher that relies on transistors and a timing chip. This type of flasher mimics an old-school cadence without generating heat, works seamlessly with low-draw LED lamps, and copes better with multiple light assemblies. The ultimate distinction between the two types lies in how the blink is timed: heat expansion in the thermal unit versus electronic control in the solid state module. But both Turn Signal Flashers remain a plug-in cube that lives in the fuse box, and it is an easy swap when signals quit or flash erratically. Choosing the right Turn Signal Flasher ensures that every Sonoma continues to communicate clearly on busy roads, and the Sonoma match GMC wiring without a fuss.
Each OEM GMC Sonoma Turn Signal Flasher we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.