Knocking, rattling noise.... (noisy lifters) ????
I got a 03 se model automatic 92,xxx miles on engine.
Makes a mild noise on acceleration after auto trans shifts into 2nd gear around 1500 to 2000 rpm & goes away around 2500rpm
Thats the only time is does that.... what needs to be done to fix that?
Other than that car runs smooth, engine pulls strong & it doesn't affect performance.
But..... im about to start modding the engine & want to make sure everything is ok & good w/ the engine. & i don't like that noise

 

Your description is too basic. A video would be very helpful.

 

Heat shields, precats...