2005 Sable won't start
I just bought an 05 Sable LS in June. All of a sudden it will randomly not start. Some days it's fine, other days I've had to get it jumped 3 times.
When I turn the key, the lights/radio/etc will come on, but the engine won't turn over and I get a strange buzzing sound from the dash. Also the gauges in the dash will kind of quiver.
We've had the battery and started checked at Auto Zone and they're supposedly fine. Alternator is ok. My husband cleaned off the battery posts and cables. What is weird is (knock on wood) if the car sits all day while I'm at work, it'll start fine for me. But if I'm running errands or something like that where the car is on/off/on/off several times, then it's alot more likely to not start.
What's my next step here? Would really prefer to not go to a mechanic.