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David H
David H, GM master certified
Category: Chevy
Satisfied Customers: 2677
Experience:  Cadillac Technician 18 years cadillac dealer.ase master master certified
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Chevrolet Impala service battery charging system message is

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service battery charging system message is on but battery and altenator are working fine any ideas?
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



VIN Breakpoint









Monte Carlo


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.


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.


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.

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