Z-Flash LCM 2500 for GM

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.

*2022 Silverado & Sierra 1500 built 8/2021- 5/2022 require a visual inspection for the presence of the Lighting Control Module (LCM). If an LCM is present, you need the Z-Flash LCM for GM. If no LCM is present, you need the Z-Flash BCM for GM.

*2023 Silverado & Sierra 2500/3500 built 8/2022-5/2023 require a visual inspection for the presence of the Lighting Control Module (LCM). If an LCM is present, you need the Z-Flash LCM for GM. If no LCM is present, you need the Z-Flash BCM for GM.

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