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Z-Flash LCM 2500 Plugin Flasher for GM

Z-Flash
$449.99
Shipping calculated at checkout.
Usually ships in one business day

What's In The Box

• (1) Z-Flash LCM 2500 Module
• (1) Switch/Hardwire Cable
• (1) Vehicle wiring harness
• Includes switch, mounting tape, and hardwire cable

Tech Specs

• Seven selectable flash patterns, including two all-new inverted strobe sequences for enhanced visibility
• True plug-and-play installation with no cutting, splicing, or vehicle programming required
• Multiple activation options, including included push button, upfitter wire trigger, or OEM keyfob control
• Factory high-beam lever pattern selection for simple, OEM-style operation
• External lighting outputs designed to mirror internal factory flash patterns for seamless system integration
• Tested and verified on 2024+ GM gas and EV platforms to ensure reliable performance

Return & Warranty

We offer a 30-Day Return Policy and a 1-Year Limited Warranty. Products may be returned within 30 days for a refund, provided they are unused and in their original condition. Our 1-Year Limited Warranty covers manufacturing defects only, ensuring quality and durability.

Instructions

Description

The Z-Flash LCM 2500 is the latest evolution in the Z-Flash product line, delivering a plug-and-play GM light control solution engineered for 2024+ GM and EV vehicles. Supported platforms include the Chevy Silverado EV, GMC Sierra EV, 2025 Chevy Tahoe, GMC Yukon Denali, and GMC Sierra HD3500 Denali.

Designed to integrate directly with the OEM Light Control Module (LCM) beside the BCM, this advanced GM light controller allows users to flash factory-installed lights in up to seven selectable flash patterns, including two new inverted flash modes for improved visibility and emergency signaling.

Flash pattern selection is controlled using the factory high-beam lever, maintaining full OEM functionality. The system can also be activated via the included push button, upfitter wire trigger, or the OEM keyfob, making it ideal for fleet vehicles, emergency response, utility trucks, and EV applications.

The Z-Flash LCM 2500 is fully backward-compatible, providing a seamless upgrade path while reinforcing Ultra Bright Lightz’s commitment to reliable, vehicle-specific fleet lighting control solutions for modern GM gas and electric vehicles.

Compatibility:

Vehicle Year
Cadillac Escalade 2021-2026
Chevy Colorado 2023-2026
Chevy Silverado 1500* 2022-2026
Chevy Silverado 2500/3500 2023-2026
Chevy Silverado EV 2024-2026
Chevy Suburban 2021-2026
Chevy Tahoe 2021-2026
GMC Canyon 2023-2026
GMC Hummer EV 2025-2026
GMC Sierra EV 2024-2026
GMC Yukon 2021-2026
GMC Yukon XL 2021-2026
GMC Sierra 1500* 2022-2026
GMC Sierra 2500/3500 2023-2026

 

*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.

LCM Location Chart

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  • 5 stars: 15 (100%)
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J
Jeff H.
This is the third module I’ve purchased

This is the third module I’ve purchased. Silverado ZR2 was a 5 minute installation and worked great. 2022 F150Tremor was a 10 minute installation and awesome!

Now my 2025 Hummer EV SUT…Installation was a little trickier. The included instructions say the LCM is under the dash on the drivers side. This is probably true on other GM vehicles and it was on my Silverado. However, on the Hummer EV, the LCM is under the glove box on the passenger side. Now, if this information was added to the instructions for the Hummer EV, installation would be less than 5 minutes.

So, how did it come out once installed? BEST ONE YET!!! The Hummer EV has so many lights on it, it is amazing seeing the patterns this module puts out. Best one yet guys!

B
Ben W.
Bay far the best!

This is my third plugin play. Simple and easy install. Works as advertised! A must have in the construction industry.

J
Jerry B.
Great

Great

A
Adrien C.
Simple Easy and Perfect

Simple Easy and Perfect fit!

E
EIMSKIP l.
Really

Really good

C
Chad H.
Works

Works great

M
Mark J.
Super easy to install

Super easy to install. Looks great when it's activated. So happy there's no more cutting wires to put in a wig wag flasher. The dip switches set to flash only what you want or need to.

B
Brian S.
👍

👍

J
John
Quick easy to install an flag pattern selection

Quick easy to install an flag pattern selection was alright

M
Matthew C.
The plug and play system makes installation

The plug and play system makes installation easy

J
John C.
Works great

Works great. Easy install. No problems or error codes.

A
Alan B.
very

very nice

T
Tony E.
Very nice, high five!

Bought the LCM GM 2500 unit for a 2026 High Country HD. Customer service was great. Fast shipping. Packaged nicely with easy instructions. I had a question regarding an issue, and they responded very quickly. I did what was recommended and it was resolved. Quick response and know their product. Very pleased with my purchase. Maybe they can help me out for my other vehicles!

S
Scott B.
Simple to install

Simple to install, great support when I had a question

C
CJ @.C.F.I.
Excellent kit!

I use these kits on most of our fleet pickup trucks and service trucks for an excavation company. They work great for the guys on site, specifically in a quarry or if they are working on the side of interstate and other busy roads. I highly recommend using these modules as they are plug and play, very user friendly, and the customer/tech support is amazing!

M
Mike

Can you independently activate/control/configure front-only or rear-only?

Ultra Bright Lightz

Hello,

Sorry, you cannot.

G
Greg

How do you prevent the backup camera from activating on the display? The install video showed the backup camera being active, with the closing “X” flashing.

Ultra Bright Lightz

Hello,

If you move Dip Switch#3 on the module to the "Off" Position, that will stop the reverse lights from flashing, which will prevent the backup camera from being activated.

F
Fr35dom

How easy is the install and overall operation. Are there any videos? And do you have plans to make these for other brands like Nissan gtr?

Ultra Bright Lightz

Hello,

The Z-Flash LCM 2500 For GM is very easy to install. There is one harness that gets connected to the LCM in the vehicle. There are videos available on Facebook and on YouTube. The Z-Flash LCM 2500 is activated by using the Hi-Beam Stalk in the vehicle or by using the included push button On/Off Switch. Our engineering team is always working to make more modules for other automotive brands!

K
Keith R.

I have a 2024 Chevrolet Silverado 3500. I don’t see a kit for my truck. Do you have something that will work on my truck?

Ultra Bright Lightz

Hello,

The Z-Flash LCM For GM is compatible with your truck: https://ultrabrightlightz.com/collections/plug-n-play/products/z-flash-lcm-for-gm

R
Rooster

Is a 26 2500 Duramax compatible?

Ultra Bright Lightz

Hello,

Yes, the Z-Flash LCM 2500 For GM is compatible with your truck.

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