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Service bulletins for the 2011 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.

1715 on file from NHTSA, as of 2026-10-19.

About P0AA6 on the 2011 Chevrolet Volt: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0AA6 are shown. Show all

Bulletins, newest first
PIC5920D2024-04-08. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6
PIC5920C2024-04-08. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6
PIC5920B2024-04-08. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6
PIC5920A2024-04-08. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6
PIC59202024-04-08. Service bulletin. EQUIPMENT:ELECTRICAL. Vehicle Will Not Charge And Hybrid Loss Of Isolation With DTC P0AA6
PIC5920J2019-08-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2.
PIC5920H2019-07-08. Service bulletin. POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2.
PIC5920F2018-05-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2.
PIC5920C2017-12-22. Service bulletin. ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM; ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the coolant level in the Hybrid/EV Battery Pack. If the coolant is found low follow published Service Information diagnostics. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, then update the Hybrid Powertrain Control Module2 and Battery Energy Control Module with the latest Calibrations in TIS-2-Web. Technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC5920B2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the coolant level in the Hybrid/EV Battery Pack. If the coolant is found low follow published Service Information diagnostics. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, then update the Hybrid Powertrain Control Module2 and Battery Energy Control Module with the latest Calibrations in TIS-2-Web. Technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC5920E2017-08-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, then update the Hybrid Powertrain Control Module2 and Battery Energy Control Module with the latest Calibrations in TIS-2-Web. Technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC5920G2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2.
PIC59202017-08-15. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the coolant level in the Hybrid/EV Battery Pack. If the coolant is found low follow published Service Information diagnostics. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC5920A2017-08-15. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; HYBRID PROPULSION SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the coolant level in the Hybrid/EV Battery Pack. If the coolant is found low follow published Service Information diagnostics. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC5920D2017-08-15. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; POWER TRAIN; HYBRID PROPULSION SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that will not charge and Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0AA6 and/ or a P1F0E set on 2011-2013 Volt or a P0DAA on 2014 Volt or Cadillac ELR in the Hybrid Powertrain Control Module 2. Technician will need to inspect the Hybrid/EV Battery Pack drain plug, located on the battery tray, regardless of fluid level at the Hybrid/EV Battery Pack coolant reservoir. If any moisture is found during the drain plug inspection, contact the General Motors Technical Assistance Center for further assistance. If the coolant level in cooling system is at the proper level and there is no moisture in the battery during the drain plug inspection, and the coolant freeze protection is between -10 and -40 degrees Fahrenheit, then update the Hybrid Powertrain Control Module2 and Battery Energy Control Module with the latest Calibrations in TIS-2-Web. Technician will need to gather all measurements recorded while evaluating Diagnostic Trouble Code P0AA6 and contact the GM Technical Assistance Center for further assistance.
PIC-59202013-12-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. GM: SOME VEHICLES WILL NOT CHARGE. THE CHECK ENGINE LAMP WILL BE ILLUMINATED. CURRENT CODE P0AA6 AND/OR P1F0E MAYBE SET IN THE HPCM2.ALSO INCLUDED MAKE/MODEL CHEVROLET/VOLT, CADILLAC/ELR, AND OPEL/AMPERA. MODEL YEAR 2011- 2014 *JS UPDATED 1/16/2014 *JS UPDATED 12/12/14. *PE UPDATED 2/12/16. *PE

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