2002 chevy Trailblazer questions

[Schugg]

i need to know what would cause the front suspension to knock whenever you go over speed bumps or those types of things. im not sure is the suspension but i dont see it being much else. also on the AC, every once in a while when the cars running if you turn the AC off, one of the pulleys or the ac compressor make a a wobble/knocking kinda noise too. if you turn the ac on it will stop doing it. also it will sometimes do it as your turning the car off or on. just checking let me know

[Pedal]

the knocking thing is an issue they are having with the strut i believe, my mom tahoe did it until we got it covered my warrenty, so i would call a dealer and ask if yours is covered. my step dad works for GM so they may have just covered it b/c of that i am not sure.