If the voltage drops, the vehicle may lose propulsion, increasing the risk of crash.

Hybrid Propulsion System

Date Announced
JUN 14, 2018
Vehicles Affected
4,606
Chevrolet Recall #
18215
NHTSA Campaign #
18V397000
Summary
General Motors LLC (GM) is recalling certain 2013 Chevrolet Volt vehicles. An update to the Hybrid Powertrain Control Module 2 (HPCM2) may have disabled the cell balancing function causing a low-voltage condition.
Actions
GM will notify owners, and dealers will reprogram the HPCM2, free of charge. The recall began July 24, 2018. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is 18215.