Diode Dynamics  |  SKU: DIODD4013

Diode Dynamics LM487 LED Turn Signal Flasher

Regular price USD 6497
Built to order item. Lead times are typically 6+ weeks before shipping.

Need a more accurate estimate? Call (636) 429-7020 and our team will be happy to help.

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

Features Compatible with LED bulbs. Prevents hyperflash errors. Simple swap for original module. Direct fitment and proper sizing. Flasher Hyperblink Fix. Why do you need this module? When your factory turn signal bulbs go out, your vehicle's flasher senses that less power is being used, and it will blink the turn signals quickly to alert you. Since LED bulbs use less power, you get the same fast blinking, known as "hyperblinking," even though the LEDs are functioning just fine. Basically, your car thinks the bulbs went out! To slow down the blinking to regular speed, you can add resistors to increase the circuit's power consumption again. However, whenever possible, replacing the flasher with a module like this is the easiest option. Simply unplug your original flasher from under the dash, and swap it with this one to prevent hyperblinking. Quality. The flashers distributed by Diode Dynamics are produced by industry leaders such as Novita. Watch out for generic cheap flashers, as many are slightly too large and may not fit properly in the socket.

This Part Fits:

Year Make Model Submodel
2003-2006 Cadillac Escalade Base
2000-2001,2006 Chevrolet Suburban 1500 Base
2000-2006 Chevrolet Suburban 1500 LS
2000-2006 Chevrolet Suburban 1500 LT
2006 Chevrolet Suburban 1500 LTZ
2002-2006 Chevrolet Suburban 1500 Z71
2003-2005 GMC Sierra 1500 Base
2003-2006 GMC Sierra 1500 Denali
2005-2006 GMC Sierra 1500 Hybrid
2003,2006 GMC Sierra 1500 SL
2003-2006 GMC Sierra 1500 SLE
2003-2006 GMC Sierra 1500 SLT
2003-2006 GMC Sierra 1500 WT
2003-2004 GMC Sierra 2500 Base
2003-2004 GMC Sierra 2500 SLE
2003-2004 GMC Sierra 2500 SLT
2003-2004 GMC Sierra 2500 WT
2003-2005 GMC Sierra 3500 Base
2006 GMC Sierra 3500 SL
2003-2006 GMC Sierra 3500 SLE
2003-2006 GMC Sierra 3500 SLT
2004-2006 GMC Sierra 3500 WT
2003-2006 GMC Yukon Denali
2006 GMC Yukon SL
2003-2006 GMC Yukon SLE
2003-2006 GMC Yukon SLT