LED Flasher Relay For Turn Signals And Hazard Lights Hyperflash Fix Plug And Play Easy Install For Chevy GMC Cadillac And Hummer 03 07 Models Replaces 10383321 15764135 10383320 15231201 LM487 EFL27

Plug-and-play LED flasher relay for GMT800 trucks
✔️ Direct swap for OEM 10383321/15764135/10383320/LM487 (GMT800) Pack:1

This LED flasher relay is a plug‑in replacement designed for 2003-2007 GM GMT800 vehicles such as Silverado, Sierra, Tahoe, Suburban, Escalade, Escalade ESV, and Hummer H2. It fixes LED hyperflash on turn signals and hazards by replacing the stock flasher module with a direct, tool‑free install. It’s intended for use with LED bulbs and requires a 10-pin GMT800 flasher module.

✅ Replaces OEM numbers 10383321, 15764135, 10383320, 15231201, LM487, EFL-27
✅ Plug‑and‑play 10‑pin connector for direct swap in GMT800 vehicles
✅ Stops LED hyperflash and restores normal turn signal timing
✅ Compatible with 03-07 GM GMT800 family including Silverado, Sierra, Tahoe, Escalade, H2

💡 What is a LED flasher relay used for in GMT800 vehicles? This handy device keeps signal timing steady and fixes LED hyperflash after upgrading bulbs.
- Restores proper flash rate for turn signals and hazards
- Simple 10-pin GMT800 plug-and-play swap
- Works with LED bulbs on GMT800 platform trucks