23-NA-139
Service Bulletin Details
Public Details for: 23-NA-139
- 2024 - 2023 - 2022 - 2021 - 2020 -
Models from 2024
2024 CHEVROLET CORVETTE |
Models from 2023
2023 CHEVROLET CORVETTE |
Models from 2022
2022 CHEVROLET CORVETTE |
Models from 2021
2021 CHEVROLET CORVETTE |
Models from 2020
2020 CHEVROLET CORVETTE |
Bulletin No.: Service Bulletin Date: 23-NA-139 November, 2023 INFORMATION Subject: Information on Internal Transmission Faults Related to Components Not Serviceable at Dealer Level, Service Transmission Message Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated – DTC P1955 and/or P0867 Set Attention: This bulletin DOES NOT apply to Corvette E-Ray. This Service Bulletin replaces PIP5797E. Please discard all versions of PIP5797. Brand: Model: Chevrolet Corvette Model Year: VIN: from to from to 2020 2024 — — Engine: Transmission: All All EXCEPT RPO MLH Involved Region or Country North America, Europe, Middle East, Australia/New Zealand Condition Some customers may comment on one or more of the following: • MIL illuminated. • Service Transmission Message displayed on the DIC. Technicians may find one or more of the following DTCs set in the transmission Control Module (TCM): • P1955 • P0867 Cause Internal transmission faults related to components not serviceable at the dealer level. Correction If DTCs P1955 or P0867 are current or in history, the transmission assembly will require replacement. Do not attempt any other repairs for these DTCs other than transmission assembly replacement following service information and labor times. Note: An MCV replacement will not repair vehicles with P0867 or P1955 current or in history. Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you must follow those applicable laws. Warranty Information For vehicles repaired under the Emission coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. Copyright 2023 General Motors LLC. All Rights Reserved. Labor Operation Description Labor Time 8486338* Perform Diagnostics and Reset Codes P1955 and/or P0867 0.2 hr *This is a unique Labor Operation for bulletin use only. Page 2 November, 2023 Bulletin No.: 23-NA-139 Version 3 Modified Released August 09, 2023 Revised September 26, 2023 – Removed the first Note in the Correction section. Revised November 15, 2023 – Added the Attention statement, 2024 Model Year and RPO MLH exception under Transmission column. 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