need a little help

[99pewterta]

i have a 99 trans am that has a rattle, squeak, knock maybe that only does it when i take off in first gear. after that the car is fine.

dont know what it is and its driving me nuts. any suggestions

car has 140k miles

it sounds like a bad bushing but when only does it when i take off. i tried replicating the noise by bouncing the the car and nothing

[pajeff02]

First two things I would look at are the exhaust where it goes over the rear axle and the undercar heat shields.

[99pewterta]

ill check it out but the noise seems to be coming from towards the engine, transmission area

[Knight]

Might want to check the motor and tranny mounts, followed by the torque arm.

[Cutlass]

If you can pinpoint it to LF or RF, it could be a shock or sway link problem. But those aren't super common. If its from under the shifter area, check the trans mount and torque arm mount at the trans. If its under your feet or seat, check the exhaust hitting the floor. Stock exhaust usually doesn't do that but aftermarket exhaust is well known to hit the floor.
Also, list all your mods to the car.

[99pewterta]

thanks for the suggestions.

mods are

koni adj shocks
eibach springs
umi adj rear lower control arms
umi adj panhard bar.

all these were done about a year ago.

this noise comes from shifter, behind the radio area