19NA220
Service Bulletin Details
Public Details for: 19NA220
This technical bulletin provides a procedure to inspect and possibly replace the engine wiring harness if found damaged near the x2 connector to correct a loss of propulsion, mil illuminated w/dtcs.
Models from 2020
2020 CHEVROLET BOLT EV |
Models from 2019
2019 CHEVROLET BOLT EV |
Models from 2018
2018 CHEVROLET BOLT EV |
Models from 2017
2017 CHEVROLET BOLT EV |
Service Bulletin Bulletin No.: 19-NA-220 Date: May, 2020 TECHNICAL Subject: Loss of Propulsion, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0A3F and/or P1B03 Set This bulletin replaces PIP5641D. Please discard PIP5641D. Brand: Model: Chevrolet Bolt EV Model Year: VIN: from to from to 2017 2020 - - Involved Region or Country Engine: Transmission: All All North America, Middle East, South Korea, Brazil Some customers may comment that a loss of propulsion was experienced. ⇒ The vehicle may operate normally after the vehicle is restarted at a later time. History code P0A3F and sometimes P1B03 may set. Condition Some technicians may find one or both of the following DTCs set in the Hybrid/EV Powertrain Control Module: • P0A3F • P1B03 ⇒ If the vehicle has these high voltage DTCs in addition to P0A3F and/or P1B03, the harness may not be the cause. Contact GM Technical Assistance (TAC) for further guidance: • P0A78 • P0C01 • P0C0B Cause Correction Copyright 2020 General Motors LLC. All Rights Reserved. This condition may be caused by a spread terminal on the vehicle harness connection X2 on the T12 transmission assembly. ⇒ The terminals may not have been perfectly aligned during installation at the vehicle assembly plant. Replace the Engine Harness. Due to the sensitivity of resolver (motor position sensor) circuits, replacing the connector with a terminated lead is not permitted per SI document ID 4583435. These diagnostic codes result in a loss of propulsion event on the vehicle. Exercise care when connecting the new harness to X2 on the transmission by aligning the connector bodies and not attempt to install at an angle. Page 2 May, 2020 Bulletin No.: 19-NA-220 Connector Examples 5409321 5518453 Example case of damaged terminals. Terminals do not need to have visible damage to set DTCs P0A3F and P1B03. Ensure that the connector is fully seated. Parts Information Use the Vehicle Identification Number (VIN) and the GM Electronic Parts Catalog (EPC) to determine the which Engine Wiring Harness to order. Warranty Information For vehicles repaired under the EV Component (V) coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Labor Operation Description Labor Time 5430940 Engine Wiring Harness Replacement Use Published Labor Operation Time 5409322 Showing both proper and improper alignment of the X2 connector. Version 3 Modified Released February 4, 2020 February 17, 2020 – Added the 2020 Model Year, removed the VIN breakpoint, added Brazil to the Involved Region or Country section and added an additional comparison graphic. May 13, 2020 – Removed the part numbers and added EPC information to the Parts Information section, added information to the Condition section and updated the warranty coverage statement. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION Bulletin No.: 19-NA-220 May, 2020 Page 3