Speed bump squeak

[scomis]

I have a 2009 Tahoe. When I go over a speed bump straight on with both front tires, it squeaks in the front. But, when I go over the speed bump with either the driver OR the passenger front tire only, no squeak. Any ideas what might be squeaking? I bought some lithium spray grease but didn’t want to start putting it on everything just guessing.

 

[OR VietVet]

I hear that, the same way, sometimes on my Tahoe. But I also have poly bushings with Hellwig bars, front and rear. I spray them and the noise goes away. You could have nothing but rubber but get the noise because of being real dry where you are or salt problems or or or......Spray away.

 

[Fless]

Have someone bounce the front end up and down while you're under it (with clearance, of course) to pinpoint the cause. Likely a sway bar link bushing or the sway bar frame mount bushing, but could be something else. Loose shock/strut, control arm bushing, etc. when the suspension is flexed a lot.

Way out there: check the engine and transmission mounts for looseness.

 

[Foggy]

I would guess sway bar end links.. They are pretty throw away parts and
fairly cheap and easy to replace.. Just take a look at them visually

 

[scomis]

Thanks for the advice I will try spraying the sway bar stuff first and see if that works!

 

[j91z28d1]

on mine I did the end links and the sway bar center links with some good grease used on poly bushings and it went away.

it is back slightly, more so when cold. I will replace time all at some point.

 

[scomis]

Spray grease or are there zirks?

 

[j91z28d1]

no zirk and spray on the outside probably won't get in where it needs it.

I unbolted mine and greased all the bushinga by hand. it's a crazy thick sticky grease I just happenened to have extra packets of.

you might just replace them all for the heck of it. the part numbers are on here somewhere. I think @mikez71 did his a little while back.

 

[Foggy]

Spray grease or are there zirks?

They are cheap.. If they look crappy, just replace them. Just use OE replacements
from local parts store (can use store brand no issues)

 

[Fless]

I used Sil-glyde on mine when I replaced the bushings and end links.