I just looked thru a few records cuzz I have seen a few issues like he posted. I had a 2011 Tahoe 178K the battery tested good they wanted a new battery, are a quick last minuet fix. It came back a a week later with the same issue : (
I know this is not the silver bullet folks want to see. This was what resolved the issue.
CHARGE BATTERY
CHECK STARTING AND CHARGING SYSTEM
CHECK FOR BATTERY DRAIN LOW .004MA
CHECK ALTERNATOR RIPPLE
CHECK STARTER WAVE FORM
REPLACE ALTERNATOR
Yes the alt was on its way out to see the issue it took a DSO (scope) It was not a quick Wamm Bamm thank you mamm while you wait job.
The info needed is the battery dead are extremely low when the event happens. That will lead to the direction to resolve the issue. That TSB does move the customer down the road but it does not resolve a real issue. It only resolves a issue if no issue is experienced.
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