Sequoia LTD 4WD V8-4.7L (2UZ-FE) (2001)
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Amplifier: All Technical Service Bulletins
Radio/Stereo - Noise/Excessive Bass
AUDIO
AU001-02
Title:
JBL AMPLIFIER IMPROVEMENTS
Models:
'01 - '02 Sequoia
February 8, 2002
Introduction
New JBL amplifiers have been designed for the 2001 and 2002 model year Sequoia to address the following concerns:
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Intermittent pop noise from the audio system when cycling the ignition key.
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Excessive bass even with bass controls set to "-5."
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Insufficient amount of sound from rear speakers.
Applicable Vehicles
2001 - 2002 model year Sequoia vehicles built before the VINs listed below.
Production Change Information
Parts Information
Repair Procedure
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If the customer complains of a pop noise when cycling the ignition key, replace only the front amplifier for vehicles before the VIN break shown.
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If the customer complains of insufficient sound from the rear speakers, then replace the rear amplifier for vehicles before the VIN break shown.
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If the customer complains of excessive or booming bass, replace both the front and rear amplifier based on the VIN information. If the VIN is after
the front amplifier amplifier implementation but before the rear amplifier implementation, only replace the rear amplifier.
Both amplifiers are ordered through the JBL exchange program by calling 1-800-456-4265.
Warranty Information
Applicable Warranty *:
