Canada - Radio/Stereo - Noise/Excessive Bass

Bulletin
1054

Issue Date
2002-02-11

Reference
BE-02-001

Model
Sequoia

Year Range
2001, 2002

Market
Canada

Component
BE

Subject:
JBL AMPLIFIER IMPROVEMENTS

New JBL amplifiers have been designed for the 2001 and 2002 model year Sequoia to address the following concerns:
- Intermittent pop noise from the audio system when cycling the ignition key.
- Excessive bass even with bass controls set to "-5".
- 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:
- 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.
- If the customer complains of insufficient sound from the rear speakers, then replace the rear amplifier for vehicles before the VIN break shown.
- 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 implementation but before the rear amplifier implementation, only replace the rear amplifier.

Both amplifiers are ordered from Harman-Motive/JBL using the Audio Exchange Program procedures.





REPAIR TIME:

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.