# Service bulletin T7020

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: 11030952
- Published by NHTSA: 2026\-04\-07
- Manufacturer's number: T7020
- Manufacturer's date: 2026\-03\-20
- NHTSA component: ENGINE

## NHTSA's summary

This Temporary Repair Practice describes removal and replacement of fuel injectors which may be degraded, resulting in repeat instances of aftertreatment fault codes and/or excessive aftertreatment system regeneration. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030952-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030952-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS X15

JSON: [/v1/bulletins/11030952](/v1/bulletins/11030952)

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