# Service bulletin 21NA080

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: 10192043
- Published by NHTSA: 2021\-05\-10
- Manufacturer's number: 21NA080
- Manufacturer's date: 2021\-03\-26
- NHTSA component: BACK OVER PREVENTION

## NHTSA's summary

This service bulletin provides repair information to correct a customer concern of Flutter Type Noise Heard When Vehicle is Operating in AFM Mode \(ECO Lamp On\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10192043-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10192043-9999.pdf)

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

## Components

Driver assistance, Backup camera

## Vehicles listed

- 2020 to 2021 CADILLAC CT4
- 2020 to 2021 CADILLAC CT5

## Other bulletins for the same vehicles and component

- [23\-NA\-084](/bulletins/11006379.md), 2024-08-15, Service bulletin: BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING; VISIBILITY/WIPER; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of a Blue Hourglass and No Gridlines on Radio Rear View Camera Display While in Reverse.
- [N23\-241156](/bulletins/10243572.md), 2023-10-05, Service bulletin: BACK OVER PREVENTION:SOFTWARE. \(There may be future updates under this same release number.\) Your vehicle keeps getting better. This vehicle software update includes the following: Refinements: •Updates made to the overall vehicle software update process. Better Never Stops™
- [23\-NA\-042](/bulletins/10239115.md), 2023-07-14, Service bulletin: BACK OVER PREVENTION:SOFTWARE; EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides repair information to update radio software to correct customer concerns of Software related issues.
- [PIT5832H](/bulletins/10237651.md), 2023-06-13, Service bulletin: BACK OVER PREVENTION. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
- [N23\-239659](/bulletins/10236375.md), 2023-05-19, Service bulletin: BACK OVER PREVENTION:SOFTWARE. Your Cadillac keeps getting better. A vehicle software update is ready for you to install which includes the following if your vehicle is equipped: Refinements: Improvements made to Automatic Lane Change feature within Super Cruise. Software improvements to the Super Cruise driver assistance technology. A variety of software improvements to make your in\-vehicle experience better. Better Never Stops.
- [PIT5832G](/bulletins/10234206.md), 2023-04-17, Service bulletin: BACK OVER PREVENTION; ELECTRICAL SYSTEM:STARTER ASSEMBLY. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
- [22\-NA\-127](/bulletins/10232458.md), 2023-03-04, Service bulletin: BACK OVER PREVENTION:SOFTWARE; EQUIPMENT:ELECTRICAL. This service bulletin provides repair information on release of Radio Software Version V160 Update to correct customer concerns of radio software issues.
- [21\-NA\-091](/bulletins/10231520.md), 2023-02-08, Service bulletin: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; EQUIPMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT. This service bulletin provides information for customers/dealers/technicians on Normal Camera Display Operation \- Flashing Diamond \- Spot \- or UFO like image on Camera Display.
- [PIT5913A](/bulletins/10216363.md), 2022-07-25, Service bulletin: BACK OVER PREVENTION:DISPLAY FUNCTION. This Preliminary information communicates a condtion where SD card removed is being displayed on the radio display intermittently. ThisPI advises that engineering is working on a fix for this issue
- [22NA028](/bulletins/10214244.md), 2022-06-21, Service bulletin: BACK OVER PREVENTION. This service bulletin provides a repair procedure to correct a customer concern of a Whining/Whirring, Whistle, Squeaking, Groaning/Growling Noise Coming from Front Wheel/Engine Area.

JSON: [/v1/bulletins/10192043](/v1/bulletins/10192043)

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