# Service bulletin N232399010\-01

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.

- Type: Service bulletin
- NHTSA id: 10233386
- Published by NHTSA: 2023\-03\-31
- Manufacturer's number: N232399010\-01
- Manufacturer's date: 2023\-03\-31
- NHTSA component: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Service Update Revision: Certain vehicles may experience an intermittent loss of communication with the Transmission Control Module \(TCM\). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over\-the\-air \(OTA\) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates. Dealers will perform a TCM module reprogramming.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10233386-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10233386-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline, Automatic transmission, Transmission control module

## Vehicles listed

- 2023 CADILLAC CT4
- 2023 CADILLAC CT5
- 2023 CADILLAC ESCALADE
- 2023 CADILLAC ESCALADE ESV
- 2023 CHEVROLET SILVERADO 1500
- 2023 CHEVROLET SUBURBAN
- 2023 CHEVROLET TAHOE
- 2023 GMC SIERRA 1500
- 2023 GMC YUKON
- 2023 GMC YUKON XL

## Other bulletins for the same vehicles and component

- [23\-NA\-102](/bulletins/10242125.md), 2023-09-09, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. This service bulletin provides a procedure to repair wiring to correct customer concerns of Driveability, Hesitation, Transmission Shifting Rough/Harsh, Malfunction Indicator Lamp \(MIL\) Illuminated.
- [17\-NA\-066](/bulletins/10239647.md), 2023-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
- [PIP5926A](/bulletins/10239164.md), 2023-07-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. This Preliminary information communicates that the t\-case input seal, and/or the o\-ring most likely is the source of the leak between the transmission and the t\-case.
- [N222392670](/bulletins/10236355.md), 2023-05-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Service Update. Certain vehicles may have a condition where the transmission reaction carrier \(an internal component\) may have been damaged during assembly. Dealers are to replace the transmission.
- [PIP5853C](/bulletins/10236142.md), 2023-05-15, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). This PI communicates to dealers and technicians a possible diode issue in the TCCM, and how to properly diagnose for a diode issue.
- [16\-NA\-130](/bulletins/10232711.md), 2023-03-08, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear.

JSON: [/v1/bulletins/10233386](/v1/bulletins/10233386)

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