Okay, facts:

(1) 2006, lsj-turbo, 32k-ish miles, exedy hyp. clutch (no more than 15k miles on it)

(2) OEM tranny, OEM engine (even internals).

(3) One brake job where front and rear pads replaced, front rotors turned.

(4) Sat for a year due to turbo converstion.

Story:

If you've been following my story (Crazy Mexicans thread), you'll know the history (don't bother reading for this). Anywho, I drive it around, and in every gear I get a loud distinguishable clunking as I'm driving. The clunking goes faster as speed increases, not rpm's. The only time the clunking goes away is when I press the brakes. I don't have to come to a complete stop, but simply applying pressure with the brakes makes it go away. I took it to my buddy who's a GM tech. I exit the freeway, and come to a stop to merge with another feeder lane, and as I'm taking off I lose all forward momentum in 1st gear (tires barely even spinning).

What my buddy did:

(1) Ripped apart the tranny and blue-printed it.

(2) Upon further inspection between my buddy and a master tranny tech, they determine the worst that my tranny had was some bushing needing replacement, and a fluid change (both of which completed)

(3) Axles are good (visual inspection)

(4) Wheel Hub bearings are good (not sure how he inspected these) on all four wheels


At this point I'm lost. I don't enjoy internet diagnostics, but I'll take any ideas at this point. Thanks in advance....

 

this may sound stupid...but one of your wheels maybe loose i had the same exact problem ppl told me lots of bs about what was wrong and it was just a few loose lug nuts

 

dude, nothing sounds stupid at this point. that's an honest answer and something i didn't even bother considering (so how stupid does that make me )

 

Well also this if it only increases with speed but it goes away with the brakes.have u considered warped rotor .

 

that crossed my mind. Do you think sitting for a year collecting surface rust would be enough to warp the rotors?

 

ding! ding! ding! most likely this was the problem...but I'm gonna have him check the rotors.

 

figured! lol one machanic told me for sure i needed my oil changed....um it still said 85%! haha scammers..glad i cud help

 

Did it turn out to be a loose wheel or the rotors?

Sarah
GM Customer Service

 

oh no...it was the lugs I texted my buddy and he "forgot" to tell me about them before he ripped into the transmission