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Old 11-06-2018, 09:30 PM   #1
gigi8
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2006 Chevy Impala SS 5.3L

If anyone could please help I would be forever grateful. The battery light is staying illuminated - the car will start and run but the warning light comes on and says check the charging system. It has a new alternator and battery but the battery light still stays illuminated. We have checked the wiring and could not find any problems. Could it be a PCM?? Would the best thing to do is take it to a dealer. Any suggestions very much appreciated!!
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Old 11-07-2018, 08:12 AM   #2
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Re: 2006 Chevy Impala SS 5.3L

Ok, so is the charging system actually charging? Been checked with a volt meter?
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Old 11-07-2018, 10:20 AM   #3
gigi8
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Re: 2006 Chevy Impala SS 5.3L

Hi - yes the charging system has been checked with a volt meter.
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Old 11-07-2018, 10:21 AM   #4
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Re: 2006 Chevy Impala SS 5.3L

Ok, you need to have the bcm and pcm scanned to see why the lite is still on.
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Old 11-07-2018, 10:26 AM   #5
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Re: 2006 Chevy Impala SS 5.3L

Okay-thank you - was definitely leaning towards that but open to the possibilities of checking something else.
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Old 11-07-2018, 11:38 PM   #6
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Re: 2006 Chevy Impala SS 5.3L

Does the battery have an extra wire going to a sheathing around the battery cables? If yes, it's a current sensor.... It's almost like an inductive pickup....this signal goes to the BCM...
Check for codes like Max suggested...especially "B" codes....
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