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David H
David H, GM master certified
Category: Chevy
Satisfied Customers: 2669
Experience:  Cadillac Technician 18 years cadillac dealer.ase master certified.gm master certified
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Chevrolet Impala service battery charging system message is

Resolved Question:

service battery charging system message is on but battery and altenator are working fine any ideas?
Submitted: 3 years ago.
Category: Chevy
Expert:  David H replied 3 years ago.
There is a technical service bulletin for your concern.The bulletin requires reprogramming the body control module with updated software.The dealer will need to perform the reprogram.They usually charge 1.0 hour labor for the repair.Here is a copy of the TSB.

Subject:Charging System Light On, Service Battery Charging System Message Displayed, DTC B1405 and/or B1516 Set (Reprogram BCM)
Models:2006 Buick Lucerne
2006 Cadillac DTS
2006 Chevrolet Impala, Monte Carlo


Built Prior to the Following VIN Breakpoints

MakeE

Model

VIN Breakpoint

Buick

Lucerne

6U245893

Cadillac

DTS

Chevrolet

Impala

69416551

Monte Carlo

Condition

Some customers may comment on the charging system light being illuminated in the instrument panel cluster and the "Service Battery Charging System" message being displayed on the Driver Information Center.

Upon further investigation, the technician may find DTC B1405 and/or B1516 set.

Cause

The BCM may reset while cranking the engine under low voltage conditions. The battery current sensor may draw excessive current during the BCM reset. B1405 and/or B1516 will set during this condition.

Correction

DO NOT replace the battery current sensor or the BCM.

A new service calibration has been developed to correct this condition. Reprogram the BCM with the software available in TIS2WEB.

David H, GM master certified
Category: Chevy
Satisfied Customers: 2669
Experience: Cadillac Technician 18 years cadillac dealer.ase master certified.gm master certified
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