I have an 86 K10 custom that wont start. It ran most of day Friday went to start a couple hours later and couldnt get to turn over.

 

Won't turn over? Check battery cables

 

I've checked them several times. Completely charged battery. It's the third time this week that its happened. Once stopped at a gas station was off no more than five minutes. Came back out wouldn't start. Turned key made all the right cranking noises but wouldn't start. Next day started right up took it to work there fifteen or so minutes wouldn't crank again. Got it started finally, happened again Friday haven't been able to start since.