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GM develops software to identify Bolt EV battery failures

GM develops software to identify Bolt EV battery failures

After 5 Chevy Bolt electric vehicles (models between 2017 and 2019) erupted due to battery anomalies, General Motors (GM) has developed a new diagnostic tool to identify potential battery problems.

The first measure taken last year was to inform the owners of the Bolts produced between those years to go to their local dealer for a service, where their Bolts were configured so that the charge capacity of the battery was only 90%.

Now the company points out in a statement that Chevy Bolt EV owners between 2017 and 2019 are expected to take the vehicle to their local GM dealership, where a mechanic will perform a battery assessment and replace it if they detect any abnormalities.

Additionally, during the dealer’s visit, the mechanics will also install the new diagnostic tool (software) which GM says can detect potential problems before they become more serious.

Finally, it will also remove the 90 percent load limit that GM implemented last year for those Bolt EV models.

GM has promised that this new software will be factory installed on the new 2022 Bolt EV and 2022 Bolt EUV.

General Motors’ statement on the How To and Support page reads as follows:

General Motors is communicating to owners of select 2017-2019 Chevrolet Bolt electric vehicle models that it has developed a remedy to complement the previously announced safety recall.

As part of the service procedure, dealers will use GM-developed diagnostic tools to identify potential battery anomalies and replace battery module assemblies as needed. The solution will also include installing advanced diagnostic software on these vehicles which, among other things, has the ability to detect potential problems related to changes in battery module performance before problems arise.

Customers should visit the nearest participating Chevrolet EV dealer for the repair procedure. Once the repair procedure is complete, the dealer will remove the 90% state of charge limit and return the battery to its previous 100% charge capacity.

Customers of 2019 model year Chevrolet Bolt electric vehicles will be able to perform this remedy starting April 29, and customers who own 2017 and 2018 model year Bolt electric vehicles will be able to have the remedy performed at the end of May. In addition, we will be making advanced diagnostic software available to all other Bolt EV owners in the coming months. Additionally, we will make this diagnostic software standard on Bolt EV and EUV 2022, as well as future GM electric vehicles.