# Service bulletin PIP5921B

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: 11027949
- Published by NHTSA: 2026\-02\-01
- Manufacturer's number: PIP5921B
- Manufacturer's date: 2026\-01\-30
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

This Preliminary information communicates the possibility of DTC p0011 p0016 and potential for a rattle or ticking noise to occur from the Intake Cam Actuator, or cover plate screws backing out and making contact with Cam carrier

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027949-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11027949-9999.pdf)

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

## Vehicles listed

- 2020 to 2023 CADILLAC CT4
- 2019 to 2023 CHEVROLET SILVERADO 1500
- 2019 to 2023 GMC SIERRA 1500

JSON: [/v1/bulletins/11027949](/v1/bulletins/11027949)

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