16:09 26-10-2025

GM service update fixes BECM glitch in Chevy Blazer EV, Silverado EV and BrightDrop vans

GM rolls out service update N232401570 for 2023–2024 Chevrolet Blazer EV, Silverado EV, and BrightDrop 400/600, reprogramming the BECM via OTA or at dealers.

General Motors has announced a new service update that affects several Chevrolet models—the Blazer EV, the Silverado EV, and the BrightDrop 400 and 600 electric vans. The issue traces back to the Battery Energy Control Module, which in some cases fails to exit initialization mode because a cell monitoring unit remains inactive.

Under update N232401570, GM instructs dealers to reprogram the module to clear the fault. No hardware replacement is required, and the procedure can be handled at a service center or delivered over the air, provided the owner has accepted the applicable terms. The approach is pragmatic: a software recalibration instead of parts swapping, with OTA where possible to cut down on inconvenience.

The campaign covers 2023–2024 model-year vehicles, including the Chevy BrightDrop 600, BrightDrop 400, Blazer EV, and Silverado EV. GM says it will run through October 31, 2027, while the total number of affected vehicles has not yet been specified.

It’s worth noting that BrightDrop vans were previously sold under a standalone brand, but from 2025 they are part of Chevrolet’s lineup. Given the limited first-year sales of the Blazer EV and Silverado EV, the update is expected to reach a relatively small fleet. In the broader picture, early software hiccups like this are typical of fresh EV platforms, and a clean, software-first remedy is the right kind of response.