Starter works/then does not work

Hello, it is difficult to say without hands on testing. The biggest question I ask is to the common statement "battery OK" that I read on here -- what makes you say the battery is OK? How was it tested? Just because you may have lights and accessories does not mean the battery is necessarily in good condition and capable of starting the vehicle. Have you had it tested -- with either a load capable testing device or a Midtronics battery tester that can properly test a lead acid battery? If you do test the battery and it is good, then you could have an issue with cabling -- loose or corroded -- or a starter, starter relay, ignition switch (electrical) issue. Testing is needed step by step to determine the source of the problem.

HOPEFULLY - this problem will arise while vehicle is at the auto repair facility so *hands-on* testing can be performed. That IS the only way to discover what is failing! Good luck with it!