just something to check; on the positive cable that connects to your battery, the stater cable bolts down onto it. you can trace it from the starter. if the bolt is loose the starter won't get the power to crank. so check that its tight and not corroded.
my car wouldn't start once. seemed like a bad starter. changed it. ended up the bolt for the cable was loose by the battery. tightened it down and it cranked right up. i was livid, but relieved.
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