General Motors unveiled the plan to fix the batteries on its Chevrolet Bolt EV and LG Chem has resumed production of the batteries at its two Michigan plants.
The company said it worked with battery producer LG Chem to develop updates for the hardware and software. The focus will be on producing batteries for the recalled vehicles. The defects were due to a torn anode and a folded separator.
“We’re grateful for the patience of owners and dealers as we work to advance solutions to this recall,” said Doug Parks, GM executive vice president, Global Product Development, Purchasing and Supply Chain.
“Resuming battery module production is a first step and we’ll continue to work aggressively with LG to obtain additional battery supply. In addition, we’re optimistic a new advanced diagnostic software will provide more convenience for our customers.”
Getting replacements in the field
GM said it will prioritize Chevy Bolt EV and EUV owners whose batteries were produced during specific build timeframes where it believes battery defects appear to be clustered. The company established a notification process that will inform affected customers when their replacement modules will be available.
The new batteries will include an extended battery 8-year/100,000-mile limited warranty. The updates will be conducted at GM dealers. Owners can schedule an appointment in about 60 days.
Additionally, the company is going to introduce new diagnostic software to increase the available battery charging parameters over the current guidance. It’s designed to detect abnormalities to indicate if the battery in a vehicle is damaged by monitoring its performance.
If the battery doesn’t hit the performance mark, it will warn the vehicle’s owner and prioritize “damaged battery modules for replacement. It is GM’s intent that further diagnostic software will allow customers to return to a 100% state of charge once all diagnostic processes are complete,” the company said in a statement.
What about parking until then?
The problem with the batteries reportedly caused at least a dozen fires, forcing GM to ask Bolt owners to not park their vehicles in a building after charging. The company’s issued new parking guidance, which will permit owners to park where they please.
The company said it is not aware of any fires that have occurred where customers followed this safety guidance, in parking decks or otherwise. GM’s instructions remain:
- Set the vehicle to a 90% state of charge limitation using Target Charge Level mode. Instructions on how to do this are available on chevy.com/boltevrecall. If customers are unable to successfully make these changes or do not feel comfortable making these changes, GM is asking them to visit their dealer to have these adjustments completed.
- Charge the vehicle more frequently and avoid depleting battery below approximately 70 miles (113 km) of remaining range, where possible.
- Continue to park vehicles outside immediately after charging and do not leave vehicles charging indoors overnight.
Customers who have additional questions can visit www.chevy.com/boltevrecall or contact the Chevrolet EV Concierge 1-833-EVCHEVY (available Monday through Friday, from 8 a.m. – midnight ET; Saturday and Sunday, from noon – 9 p.m. ET) or contact their preferred Chevrolet EV dealer.