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Service bulletins for the 2018 Chevrolet Volt

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

850 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

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Only bulletins with component: Transmission control module are shown. Show all

Bulletins, newest first
PIP5621C2022-10-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
PIC6243E2019-06-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication advises the technician that the Hybrid Powertrain Control Module 2 will be placed on a parts restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIC63032018-05-21. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary information communicates to look for other codesP0AEE, P0AF3, P0BD2, P0BD7, P0BDC, P0BE1 if a customer comes in with a Mil Request.
PIC6211A2018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This Preliminary Information communication provides the technician with inspection and repair instructions for vehicles with a no start/no propulsion condition that is setting a DTC P0A0C for the high voltage interlock circuit.Technician will reprogram the Hybrid Powertrain Control Module 2 to resolve the concern.The HPCM2 will then ignore the interlock circuit and P0A0C will no longer be a valid DTC for the vehicle

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.