# Service campaign N262572131

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 campaign
- NHTSA id: 11036440
- Published by NHTSA: 2026\-08\-28
- Manufacturer's number: N262572131
- Manufacturer's date: 2026\-08\-28
- Campaign id or software version: N262572131
- NHTSA component: ENGINE

## NHTSA's summary

Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not drilled properly. Dealers are to perform the inspection procedure contained within this bulletin.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036440-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11036440-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2026 CHEVROLET SILVERADO 2500
- 2026 CHEVROLET SILVERADO 3500
- 2026 GMC SIERRA 2500
- 2026 GMC SIERRA 3500

## Other bulletins for the same vehicles and component

- [N262568830](/bulletins/11035676.md), 2026-08-04, Service campaign: ENGINE. Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten the oil filter if found to be loose.
- [15\-NA\-010](/bulletins/11020254.md), 2025-07-07, Service bulletin: ENGINE. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
- [25\-NA\-100](/bulletins/11019503.md), 2025-06-12, Service bulletin: ENGINE. This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000\-mile Emission Select State Component Limited Warranty.

JSON: [/v1/bulletins/11036440](/v1/bulletins/11036440)

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