What the ZZ-2 ZWAGZ does
ZWAGZ is ZZ-2’s line of OEM light controllers. The ZW-GMLC-EV flashes the lights your truck already has, so there are no extra light bars to mount, in seven patterns that include two inverted sequences with strobe modes.
Because it works through the factory lights, the truck keeps its factory look. You choose how to trigger it: the factory high-beam lever, the included push button, an upfitter wire for a work-truck switch panel, or your OEM key fob.

Compatible Chevrolet, GMC and Cadillac models
According to ZZ-2, the ZW-GMLC-EV fits these 2022–2026 models. ZZ-2 notes that 2022–2023 Silverado and Sierra trucks need a visual check for the 5-port light control module, so we confirm your truck before ordering.
- Chevrolet Silverado 1500, Silverado HD 2500/3500 and Silverado EV
- GMC Sierra 1500, Sierra HD 2500/3500 and Sierra EV
- Chevrolet Tahoe, Suburban and Colorado
- GMC Yukon
- Cadillac Escalade and Escalade ESV
Know Arizona’s flashing-light rules
Arizona is strict about flashing lights on public roads. A.R.S. 28-947 allows flashing lights only on authorized emergency vehicles, school buses and snow removal equipment, as warning lights on disabled or parked vehicles, and as turn signals.
Use the flash patterns only where they’re legal for your vehicle, and check with your agency or an attorney if you’re not sure how the rules apply. This is general information, not legal advice.
A clean plug-and-play install
ZZ-2 designed the module to connect at the factory light control module beside the body control module, with no cutting, splicing or programming. We mount it securely, route the push-button wiring cleanly if you want a dash button, and test every pattern and trigger with you before you leave.
We install other ZZ-2 products too, from ZZPLAY interfaces that add Apple CarPlay and Android Auto to factory screens to camera interfaces and dash cams. Ask us what fits your vehicle.
Brands we work with for zz-2 light flasher
Brands with a red dot are on our Phoenix showroom shelves right now. Ask us about availability for anything else.
- ZZ-2