{"product_id":"vikksaer-lm487-led-flasher-relay-replacement-for-chevy-gmc-cadillac-hummer-03-07-gmt800-10383321-15764135","title":"VIKKSAER LM487 LED Flasher Relay — Replacement for Chevy, GMC, Cadillac \u0026 Hummer 03-07 GMT800 (10383321 \/ 15764135)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe VIKKSAER LM487 LED Flasher Relay is a compact, plug‑and‑play replacement crafted for select GM GMT800 vehicles. It fits in the same slot as the original module, delivering a clean, almost seamless upgrade experience for drivers who have added LED bulbs to their turn signals or hazard lights. The goal is to restore the familiar cadence of your signals without the uncertainty of a buzzing or erratic flash.\u003c\/p\u003e\n\u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDirectly replaces OEM numbers 10383321, 15764135, 10383320, 15231201, LM487, and EFL-27, simplifying compatibility checks and installation planning.\u003c\/li\u003e\n  \u003cli\u003eAddresses LED hyperflash by returning standard flash timing, helping signals look consistent across day and night driving.\u003c\/li\u003e\n  \u003cli\u003eDesigned for GMT800 platform vehicles from 2003–2007, including Silverado, Sierra, Tahoe, Suburban, Escalade family, and Hummer H2.\u003c\/li\u003e\n  \u003cli\u003ePlug‑and‑play installation with a factory‑style 10‑pin connector for tool‑free swapping and minimal downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIntended for use with LED bulbs and 10‑pin flasher modules; not compatible with GMT900 or other platforms.\u003c\/li\u003e\n  \u003cli\u003ePlease verify your vehicle’s original part number and platform before purchase to confirm compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn real‑world use, drivers often notice a steadier signaling cadence after installation and a quieter, more predictable operation of turn signals and hazards when LEDs are used. The LM487 is a small, unobtrusive module that slots into the existing harness and preserves the vehicle’s factory look and feel while supporting modern lighting choices.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward: locate the original flasher module, disconnect the harness, and swap in the LM487. No special tools are required, and the unit’s 10‑pin design aligns with the GMT800 system for a clean, dependable replacement that minimizes downtime.\u003c\/p\u003e\n\u003ch3\u003eWhat to know before you buy\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThis part is intended for LED bulb setups and 10‑pin GMT800 applications; it is not designed for GMT900 or non‑GMT800 platforms.\u003c\/li\u003e\n  \u003cli\u003eDouble‑check your vehicle’s year, model, and platform to ensure a proper match with the LM487 part numbers listed above.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eChoosing the LM487 gives you a practical, evidence‑based option to address LED signaling quirks. While results can vary by vehicle and configuration, many users report smoother LED signaling without the need for professional rework, keeping your signals reliable and legible in everyday driving conditions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What vehicles is the VIKKSAER LM487 LED Flasher Relay compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Designed for 2003–2007 GM GMT800 trucks and SUVs, including Silverado, Sierra, Tahoe, Suburban, Escalade, and Hummer H2; confirm your 10-pin module.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this relay fix LED hyperflash on my vehicle?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: LM487 aims to reduce rapid signaling after LED bulb installation by restoring standard timing, provided the vehicle uses a 10-pin GMT800 module.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"VIKKSAER","offers":[{"title":"Default Title","offer_id":42465729839189,"sku":"B0BTM5FC4Z","price":28.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/vikksaer-lm487-led-flasher-relay-front-view.jpg?v=1778019711","url":"https:\/\/plentytorque.co.uk\/products\/vikksaer-lm487-led-flasher-relay-replacement-for-chevy-gmc-cadillac-hummer-03-07-gmt800-10383321-15764135","provider":"PlentyTorque","version":"1.0","type":"link"}