Another Delco dies...
14.6+V is probably over the float voltage, your battery is likely damaged, next time it refuses to turn over, slap your meter on it. If it shows around 10.5V or less, a cell has opened up and it is garbage. Might not show it unless it is under load (or just stopped being under load, like a start attempt).
The Best V8 Stories One Small Block at Time
My 2006 Impala with 30,000 the stock AC delco went bad, dealer replaced with no further problems..........yet.


