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  • Z-Flash LCM for GM
  • Z-Flash LCM for GM

Z-Flash LCM 2500 fo GM

Regular price $449.99
Unit price per
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The Z-Flash LCM 2500 represents the next generation of Z-Flash innovation, delivering a true plug-and-play GM light control solution purpose-built for 2024+ GM gas and electric vehicles. Designed to meet the needs of modern fleets and emergency responders, the LCM 2500 supports platforms including the Chevy Silverado EV, GMC Sierra EV, 2025 Chevy Tahoe, GMC Yukon Denali, and GMC Sierra HD 3500 Denali.

Engineered to connect directly to the vehicle’s OEM Light Control Module (LCM) located next to the BCM, the Z-Flash LCM 2500 enables controlled flashing of factory-installed exterior lights—no cutting, splicing, or permanent modifications required. Users can choose from up to seven selectable flash patterns, including two new inverted flash modes designed to enhance visibility, recognition, and emergency warning effectiveness.

Flash patterns are easily selected using the factory high-beam lever, preserving full OEM operation and driver familiarity. For added flexibility, the system can also be activated using the included push-button switch, upfitter wire trigger, or OEM key fob, making it an ideal solution for fleet vehicles, first responders, utility trucks, and EV applications.

Fully backward-compatible with previous Z-Flash systems, the LCM 2500 offers a seamless upgrade path while reinforcing Ultra Bright Lightz’s commitment to reliable, vehicle-specific lighting control solutions for today’s evolving GM fleet—gas and electric alike.

What's Included:

  • One (1) Z-Flash LCM 2500 Module
  • One (1) Switch/Hardwire Cable
  • One (1) Vehicle wiring harness

Tech Specs:

  • Seven selectable flash patterns, including two new inverted strobe modes
  • True plug-and-play installation—no cutting, splicing, or programming
  • Multiple activation options: push button, upfitter wire, or OEM key fob
  • Flash pattern selection via factory high-beam lever
  • External outputs sync with factory flash patterns for seamless operation
  • Tested and verified on 2024+ GM gas and EV platforms

Instruction manual:

Request a Z-Flash for your vehicle:

Z-Flash Testimonials

  • ★★★★★
    Easy enough install
  • ★★★★★
    We have all Models of Fords and Chevys,in our Fleet and we use Ultra Bright Lightz for most of all our units
  • ★★★★★
    Flasher works just as described and easy install! Very nice unit.
  • ★★★★★
    Easy install. Plug and Play. After it’s a matter of customization, which pattern do I like, what bulbs do I want to flash, do I want to install my own switch? Everything can be installed and ready to go in 10 mins or less with a 10mm socket.

Frequently ask questions

Find the most frequently asked questions below.
  • No, the Z-Flash will not damage the LCM. The module is plug-and-plug and requires no splicing. It can be removed anytime and leaves no trace of being installed. The Z-Flash is significantly safer for a vehicle's electrical system than traditional aftermarket emergency vehicle lighting.

  • No, the Z-Flash is plug-and-play and does not require permanent modifications to the vehicle. They can be removed and reinstalled and leave no trace of being in the vehicle.

  • This depends on local and state regulations. In many areas, the use of flashing headlights is restricted to emergency and authorized vehicles on public roads. The Z-Flash is legal to use at most car shows.

  • The Z-Flash generally consumes very little power when not in use. It is always recommended to ensure the vehicle’s engine is running when using the device. The Z-Flash uses very little power when off, but like most aftermarket vehicle products, it may drain the battery when the vehicle is in long term storage.

  • Yes, the Z-Flash can often be used alongside other emergency or auxiliary lighting systems. The Z-Flash can be powered on using a 12V controller, switch box, or upfitter switch.

  • No, the Z-Flash is designed to be installed inside the vehicle and has no waterproofing rating. It should be installed in the cab and not in the engine compartment or any other wet areas.