Grand Prix V6-3.8L VIN 2 (2004)
Body Control Module: Customer Interest
Audio System - Whine/Hum Heard From Speakers on AM Band
Bulletin No.: 04-08-47-002A
Date: August 02, 2004
TECHNICAL
Subject:
Noise: Tone, Whine, Whistle, or High Pitched Hum Heard Through Speakers on Radio AM Band (Replace BCM)
Models:
2004 Pontiac Grand Prix
Supercede:
The subject of this bulletin has been revised to improve its searchability in SI. Please discard Corporate Bulletin Number 04-08-47-002 (Section 08 -
Body and Accessories).
Condition
Some customers may comment on a high pitched noise or humming while listening to the AM band of the vehicle's radio. This tone is most noticeable on
weak or distant stations and when driving under bridges.
Important:
If this condition is found to only exist with the rear window defroster on, do not perform the repair outlined below.
You should not confuse this concern with a static or crackling sound in the radio when the Rear Window Defroster is in operation. Static or Increased
Interference with the Rear Window Defroster On is a separate issue and the subject of Corporate Bulletin Number 03-08-44-005B. If this condition is
found to only exist with the rear window defroster on, do not perform the repair outlined below.
Cause
The internal circuitry of the BCM (Body Control Module) may radiate some Radio Frequency Emissions. Due to the proximity of the BCM to the radio
antenna, this interference may be picked up as a high pitched hum.
Correction
Important:
If the vehicle is already equipped with a BCM with P/N 10352463, don't replace the BCM. Refer to the diagnostics in SI in order to correctly
diagnose the noise concern.
Replace the BCM with a revised BCM, P/N 10352463. For specific repair procedures, please refer to Body Control Module Replacement in the 2004
Grand Prix Service Information.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
