1500 isn't too bad. Maybe your tranny is engaging to fast, sometimes trannys will do that if a passage is blocked or accumulator is stuck. I've had trannys chirp the tires during normal driving because of this.
If it were my car I'd change the fluid, then if needed try some tranny "fix" in a bottle. The bottle fix stuff helps clean and free stuck parts, I think it's just solvent, but it can fix problems.