95 Pontiac Trans Am 5.7, automatic, t-tops, 2-door

I have a pontiac trans am, 5.7, automatic, was wondering, their is tick noise coming from the driver side motor, it comes and goes, used to never come unless I beat on car, but then got oil change came back, about 2 or 3 months later, I thought it was a overfill on oil or not enoufe, but the oil is clean and full, now the noise is back I changed the oil it wont go away, it sounds almost like a rod knock but its not getting louder or anything, I know its not a rod, the noise comes when the car gets warm, stays away when its cold, I took it to every garage around town, every single one told me diffrent ive been told it was the rod from one the piston and rings from one, the crankshaft, camshaft from one, the flywheel from one, the lifter from one, just everything diffrent, so I really need to find out what it is, so im not wasting almost 1000 just to get it fixed and it not even solve my problem.