Usually after I shift and give it gas, took it to the dealer and said they couldn't find anything, anybody got a clue on what this may be and should I worry?

Had that kind squeak when I depressed the gas pedal, it was the spring for the gas pedal. (look up under the dash where the foor pedal linkage is). SI spray fixed it almost 2 years ago..all is still fine. As for the clutch, I sprayed the springs and the piston for the master cylinder with SI to fix that squeak too.