Circuit Board Screening Forces GM eAssist Sedan Recall

General Motors is asking owner’s permission to inspect a generator control module inside their vehicles to see if it’s functioning properly. They are suggesting that they may need to inspect approximately 38,197 Year 2012 and 2013 model Chevy Malibu Eco, Buick LaCrosse and Regal sedans equipped with eAssist that were sold in the United States and built before December 2012.

Vehicles affected have a malfunctioning generator control module that could slowly drain the battery and cause the indicator to light up in the dash. According to the automaker, if that indicator is ignored, the driver may experience a stalling engine. And in some cases, "a burning or melting odor, smoke, and, in rare instances, a fire in the trunk," can occur.

After inspecting the burnt smell, GM has come to agree that the burnt smell that people say they are picking up has nothing to do with the dAssist battery pack. Instead the smell has to do with the overheating of the control panel.

It is important that owners address the problem with their dealers. There has been at least on reported trunk fire as a result but no personal injuries or crashes.  Most of the control board incidents happen within first 1,000 miles of operation, GM says.

Vehicles made after December 2012 are not part of the recall and should not be affected but if you suspect that your vehicle may be having manufacturer-related problems report it as soon as you can.

eAssist is a system designed for hybrid vehicles to improve the way a vehicle is powered. In some vehicles, the system is powered by an advanced lithium-ion battery and a 15kW motor-generator. Depending on the circumstances, the system also helps add various aerodynamic tweaks to achieve better levels of fuel efficiency.

Some of the vehicles equipped with the eAssist system are paired with a 2.4-liter Ecotec four-cylinder engine, and a six-speed automatic transmission. Driving is optimized depending on the driving conditions and when needed, the lithium-ion battery can give the car extra boost. Depending on the acceleration, the battery and motor-generator unit can provide up to a 15 hp boost. This system also helps the regenerative braking system to capture energy that would be otherwise lost.

Per various reports, the system is designed to give drivers a better environmental driving experience while saving the driver money. Not only is energy use more efficiently, it also helps reduce emissions.

If you were affected by the recall don’t wait, take care of the problem as soon as you can before it puts you in harm’s way or costs you extra in repairs.  

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