# Service bulletin PIC6405

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: 10172314
- Published by NHTSA: 2020\-03\-09
- Manufacturer's number: PIC6405
- Manufacturer's date: 2020\-02\-10
- NHTSA component: ENGINE; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

This Preliminary information communicates that the OAT sensor may not read correctly upon startup after the vehicle has been parked for two hours or more. Engineering is aware of the concern and is working on a resolution.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172314-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10172314-9999.pdf)

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

## Components

Electrical system, Engine, Software

## Vehicles listed

- 2020 CADILLAC CT4
- 2020 CADILLAC CT5

## Other bulletins for the same vehicles and component

- [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [PIT5762F](/bulletins/10231623.md), 2023-02-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.
- [PIP5632G](/bulletins/10230683.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP4902Q](/bulletins/10230682.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIT5832D](/bulletins/10227671.md), 2022-12-12, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
- [PIT5832C](/bulletins/10224307.md), 2022-10-17, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; COMMUNICATIONS:BACK UP ALARM. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
- [21NA256](/bulletins/10207916.md), 2022-02-14, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); EXTERIOR LIGHTING. This service bulletin provides repair information for dealers/technicians to correct a customer concern of a Malfunction Indicator Lamp Illuminated with DTC P26BB Set.
- [PIP5675G](/bulletins/10206730.md), 2022-01-24, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results.
- [20NA178](/bulletins/10205544.md), 2021-12-27, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; STEERING. This service bulletin provides repair information to correct a customer concern of Service Driver Assist and/or Take Steering Messages on Start\-up, Advanced Driver Assist Systems \(ADAS\) Features Not Available with DTCs U1614, U1615, U1616 Set.
- [16NA019](/bulletins/10186058.md), 2021-02-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.

JSON: [/v1/bulletins/10172314](/v1/bulletins/10172314)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20PIC6405&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10172314&vehicle=Service%20bulletin%20PIC6405)