Warren, MI – June 14, 2018 – General Motors (NYSE:GM) has recalled 4,606 hybrid vehicles, due to a battery charging issue. Low voltage may cause the vehicle to lose power, increasing the risk of a crash. The recall includes Chevrolet Volt 2013 sedans.
Due to a faulty software update, the recalled vehicles have a defect that may prevent them from properly charging the battery cells. This may cause the vehicle to operate at lower speeds and with less acceleration. If the car continues to be driven in this reduced power mode, it will stall, increasing the risk of an injury or a crash.
The software in question runs on the Hybrid Powertrain Control Module 2 (HPCM2), which “controls almost everything the engine does” and ensures that each cell receives the proper amount of charge.
If the Volt loses power, the driver will not be able to accelerate to merge into traffic or get out of the way to avoid collision. The car may block traffic and get hit by other vehicles.
This may result in the car occupants, other drivers and pedestrians injured or killed.
To fix the issue, dealers will need to reprogram the Hybrid Powertrain Control Module 2. The repair is free of charge. This Chevy recall began on July 24, 2018.
Is your vehicle part of this recall?
As of April 2020 – the last date for which information is available – over 4,000 cars have been fixed in this Chevrolet recall. To see if your Volt is among those that still need to be repaired, use MotorSafety’s free vehicle lookup tool.
Note: March 4, 2021
We have noticed a large number of readers are interested in this recall. For that reason, we have rewritten it to include the best, most up-to-date information.