GM has issued a service bulletin for the 2020 to 2022 Chevy Bolt EV and 2022 Chevy Bolt EUV describing reprogramming of the Hybrid Powertrain Control Module 2.

GM has issued a Special Coverage bulletin for the 2016 through 2018 Chevy Volt, for an available fix for a battery energy control module malfunction.

What Does The P0171 Error Code Mean? The P0171 error code indicates the engine is running lean. The powertrain control module (PCM) monitors the oxygen content of the exhaust post-combustion.