The problem
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.
The risk
If the voltage drops, the vehicle may lose propulsion, increasing the risk of crash.
The fix
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.
Recall details
| NHTSA campaign | 18V-397 (18V397000) |
|---|---|
| Manufacturer number | 18215 |
| Manufacturer | General Motors, LLC |
| Component | Hybrid propulsion system |
| Report date | June 14, 2018 |
| Owners notified | July 24, 2018 |
| Vehicles affected | 4,606 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the fuel & propulsion system
Frequently asked questions
Is the recall 18V-397 repair free?
Yes. Chevrolet dealers will fix the problem at no cost: 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.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 4,606 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.