well i just started my car and it sounds like rocks in my engine wont do it at ideal but any gas it dose it

 

forgot it is a 3.4 with 289000 miles on it

 

Is the check engine light on? Could be: octane knock, if your knock sensor isn't working, or possibly a rod knock.
Given the (holy cow) miles on the engine, I'm leaning more toward a rod knock.
Can you make a video of the noise?

 

My thoughts exactly

 

3.4 rock in engine - YouTube

 

and dont ask me about the squeal took it to 5 shops not a single one knows what it is

 

Is that the video quality that makes it sound like a watery, putt-putt, squirty, slapping noise?
Sorry, but I'm afraid it sounds like your engine has a bad case of diarrhea.
I can't make that out as a knock, but that might be a sound issue.

 

the noise sounds like a partially clogged iac motor, or the alternator. does the noise get worse with more throttle, hot/cold, reverse/drive? given the mileage i would consider yourself very lucky. if its all original, i think gm has a program where they honor the owners of vehicles with 250k with all orginal powertrain

 

Pull the belt and run the car for a few seconds and see if the noise goes away. Sound like the bearing in the woter pump or power steering pump are shot. Could also be the timing chain slapping.

 

Actual I listen to the clip again and I am leaning more towards timing chain. It seems to do it mostly on deceleration . That would indicate timing chain. Do you have access to a stethoscope is not use a long screwdriver and set it on the timing chain cover and put your ear to it and compare that noise level to the side of the motor. If it is like X5 louder that’s it.