95 olds aurora...starter clicks sometimes...works sometimes sometimes wont...checked all connections..replaced starter twice..replacement helps for a month or two but problem always comes back

Have you replaced the wiring to the starter motor, both the main power lead from the battery and the ground (earth) lead from the battery. Being that the vehicle is over 15 years old, excessive internal resistance could be the cause of your problem, this also presnts itself as clicking from the starter motor because it is transferring less current...i would seriously look at this direction, if you dont know about auto-electrical testing, i suggest you take it to a shop to have it looked at it

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This may be related to the antitheft system The system is known for turning off the starter and/or injectors when it fails. Is there a light on the dash that says SECURITY or a picture of a car with a lock through it? This is a common problem worth looking into. http://www.diy-gm-security.com/