Service bulletin PIT5401C

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 an inoperative radio. Technician may find Diagnostic Trouble Code U0184 stored in multiple modules. If the concern is present at the dealership technician will need to contact General Motors Technical Assistance Center for further assistance if within 4 hours from Warren, Michigan. Technician should remove power from the radio. If the radio starts working with a power cycle advise the customer that we apologize for this inconvenience and that General Motors is working on a permanent solution for this concern. After the power cycle and the radio is still inoperative record the radio power and ground readings and the voltage on the low speed data line.

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, Equipment and accessories

Trouble codes named

U0184

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.

• Bulletins for another vehicle
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