06 Cobalt LS. When I get above 60mph, I start to hear a faint rattle coming from somewhere in front of me. When I hit 70, it gets much louder and sounds like it's coming from the behind the steering wheel). If I take a turn on the highway, the sound stops coming through the wheel. Once I straighten out again it returns. (the entire time I can hear it coming from the engine bay, but it's very faint).

Any ideas? I've thought that maybe it could be the steering column or something in the drivetrain. Have not performed any work on it yet.

 

Sounds like a wheel bearing to me...

Or was the car ever in a accidet??

 

No accidents, title was clean when I bought it.

There's also a clunk when I turn the wheel. Doesn't matter which way, and there's only a clunk when changing the direction I'm turning the wheels.

I'm thinking it might be the halfshafts?

 

TAke the tires off
Move , turn and play with things. See what you can narrow down. What i would do

 

steering column?

 

My Evo had that same noise but only when it was cold. I came to terms with it but it's something always thought it to be something around the steering column/dash board

 

I found a few videos online and the loud rattle sounds like it's the steering column. But the fainter rattle I think is from the half shafts, and I suspect may be the reason the column makes so much noise. Going to try and wiggle things tomorrow after work to see what makes noise.

I think the half shafts might be bad, because when I'm at >50% load, I feel the power output wavering. Going to wiggle them around as suggested and see if they're loose.

 

I think you would also get a wheel vibration if the half shalf was bad

 

No. Mine makes noise over small bumps while going so. Wheel doesn't shake at all. It's gear backlash between the column and steering motor or something along those lines.