Bulletin No.: PIE0348
Date: Oct-2015

Subject:

Engineering Information – Loss of Audio, Chimes or Turn Signal Click/Clack with DTC U0180 or B1325
sym03

Models:

2013-2016 Cadillac ATS
2014-2016 Cadillac CTS (VIN A)
Equipped with Premium Audio Amplifier (RPOs UQA or UQS)

Attention:

Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is
listed in the Global Warranty Management / Investigate History link (GWM/IVH). If the customer has not
commented about this condition or the EI does not show in GWM/IVH, disregard the PI and proceed with
diagnostics found in published service information. THIS IS NOT A RECALL — refer to the latest version
of Service Bulletin 04-00-89-053 for more details on the use of Engineering Information bulletins.

Condition
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI.
Some customers may comment on one or more of the following conditions:

•

Loss of audio

•

Loss of chimes

•

Loss of turn signal click/clack

Upon inspection, a technician may find DTC U0180 or B1325 sym03 set.

Cause
GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather information on vehicles PRIOR to repair that
may exhibit this condition. As a result, this information will be used to "root cause" the customer's concern and develop/validate a field fix.

Instructions
If you encounter a vehicle with the above concern, complete the following prior to attempting any repairs:
1.

Verify that the vehicle has lost all of the following functionality:

•
•
•

Loss of audio
Loss of turn signal click/clack
Loss of chime

2.

Document if the customer knows if the audio system stopped working during or after either going through a car wash, washing of the vehicle or recent
rainfall.

3.

Check and record any DTCs set.

4.

Verify the amplifier fuse has good continuity.

5.

Review the Recommendation/Instructions in the latest version of PIC6102.

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Contact Information
Engineer Name

Phone Number

Mick Dowd

248-804-0398

Please include the following information if leaving a message:
–

Technician name

–

Dealer name and phone number

–

Complete VIN and repair order (R.O) number

On the repair order, document the date and time the call was placed (even if the engineer was not reached).
If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI.

Warranty Information
If engineer was contacted or required information was provided, use:
Labor Operation

Description

Labor Time

3480208*

Engineering Information – Loss of Audio, Chimes, or Turn Signal Click/Clack Engineer
Call

0.5 hr

*This is a unique Labor Operation for Bulletin use only. It will not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may
occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools,
safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that
your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

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