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Service bulletin GCUS-3-908

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10118897
Published by NHTSA2017-10-15
Manufacturer's numberGCUS-3-908
Manufacturer's date2017-04-13
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

17056 - Service Update. Certain vehicles may have a condition in which condensation from the HVAC module can leak into the housing of the active noise cancellation (ANC) module. This can lead to electronic failures inside the ANC module such as erratic audio from the speakers, popping noises, intermittently inoperative, to complete loss of audio. Dealers are to inspect the ANC module for corrosion, replace if corrosion is present, and add a service shield over the ANC module.

The document

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, Software

Vehicles listed
GMC ACADIA2017

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

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