TSB Document:

Affected Component: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY

Summary
Customer Satisfaction. Certain 2013 model year Chevrolet Volt vehicles equipped with a high voltage battery, may have a condition where it could gradually lose the ability to maintain voltage. If battery concerns are not addressed, over time the vehicle could enter a reduced propulsion mode while driving, or lose propulsion, or it may not start. Dealers are to update the Hybrid Powertrain Control Module 2 (HPCM2). This software update is intended to increase the amount of warning time provided.

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Date Published
MAY 15, 2019
NHTSA TSB #
10161365
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