Service bulletin PIC6230

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.

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have a drone type noise that can be present while the vehicle is operating in the 1900-1950 revolutions per minute range. Technician will need to verify that the active noise cancellation fuse is good, terminal tension has proper tension, and all connectors are seated properly. Technician should play any audio source and ensure that all speakers are working by using the fade and balance settings. Technician should gain access to the 3 active noise cancellation microphones and test terminal tension, resistance, and mounting. Also verify that there are no mechanical issues with the vehicle. If no concerns were found during testing unplug the X3 connector at the active noise cancellation module until General Motors has provided a solution for this concern.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Listing a model year does not mean every vehicle of it is concerned: the document says which.

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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