ClockworkC5
droog
this sounds pretty stupid and im somewhat embarrased to post this but here it goes. i recently (2-3 months ago) replaced my factory battery (2000 c5) with a duralast gold. did not have the money for an optima, but the duralast gold wasnt cheap either. this weekend and again this morning car would not start. just did the single click. voltage is just under 13. checked with power dc power tester and the car gauge. i waited a few minutes and it started up just fine. did it again this morning but didnt bother with i, needed to get to work. any suggestions? alternator out put is fine as well