Haokixin LM487 LED Flasher Relay – Hyper Flash Fix for Chevy Silverado, GMC, Cadillac, Hummer 03-07

Revitalize Your GM Turn Signals with Haokixin LM487

The Haokixin LM487 LED Flasher Relay is a purpose-built solution designed for GMT800 10-pin flasher modules found in popular GM trucks and SUVs from 2003–2007. This compact, robust unit replaces several common part numbers to help restore reliable turn signals and hazard warnings when upgrading to LED lighting. Instead of the factory relay, this module aims to deliver consistent flash rates and clearer signaling, giving you a smoother driving experience without the typical dimming or hyper-flash symptoms.

Why this LED flasher matters

• Addresses over-flashing behavior that can occur after LED upgrades, helping signals stay visible at a glance.
• Supports hazard warning functionality, ensuring clear pedestrian signaling and roadway safety.
• Offers a simple, plug-in replacement that fits GMT800 10-pin configurations commonly used on popular GM models.

Compatibility and installation notes

• Replaces Part Number: LM487, 10383321, 15764135, 10383320, 15231201, EFL-27, and related references.
• Compatible with GM Chevrolet GMT800 10 Pin Flasher Module Hazard Warning Flasher Relay, including Silverado, Tahoe, Sierra, Yukon, Avalanche, Suburban, and Escalade (2003–2007).
• Important: Verify your original module before purchase. This relay is intended for GMT800 setups and may not fit GMT900 or non-GMT800 configurations.

Durable design for real-world driving

Constructed with a sturdy PP plastic housing, this relay is built to endure harsh environments and daily use. It’s designed to be a reliable upgrade for LED lighting projects and vehicle signaling upgrades, helping to keep your signals consistent across varying temperatures and road conditions.

What you get and how it helps

• Reliable LED signaling: more stable flash rate and clearer indicator lights.
• Enhanced safety cues: consistent signaling improves visibility to pedestrians and other drivers.
• Easy replacement: a straightforward swap for a streamlined upgrade process.

Note that results can vary by vehicle, LED configuration, and wiring setup. If you have questions about the fitment or installation, feel free to reach out for guidance.