Need help on this one. My '05 Trailblazer 4.2L I6 has started to show a faint battery light on before ever inserting the key into the ignition. Seems to only do it in the morning after a night of sitting. Just found the 6 month old battery bad and replaced and the faint light still hasn't gone away. Sales person when I got the replacement battery stated that is an indicator of a alternator issue. Has anyone else experienced this and what did you find to be the issue? Image is very hard to see the light. This is with the key completely off and prior to starting the vehicle.
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