Question about 2002 Chevrolet TrailBlazer
I would suggest taking the vehicle in to AutoZone or similar parts store where you can have the alternator and battery LOAD tested.
A bad cell in the battery would cause this, and also eventually ruin the battery (if it hasnt already).
The whine could also be (as you stated) the starter spinning but not getting kicked out by the solenoid to engage the flywheel.
The Starter relay, or the starter solenoid may be bad. You will need to check each to determine the failure.
I would bet on the solenoid first - as you are hearing the starter spin (most likely)
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Posted on Sep 13, 2009
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Posted on Jan 02, 2017
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