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Discussion Starter #1
Hi,

I am looking at this nice 06 gto with the t56 6 speed trans. There is a grind when shifting into 3rd at medium to high rpms. Every other gear is fine.

Is this a common problem?

from my experience with manual transmissions the most likely cause of gear grinding would be the syncro's but I have never owned a gto or any gm vehicle.

If a rebuild would be required, can anyone ballpark a $$ amount? I am in NYC area.

Thanks
 

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But I'll bet is wasn't checked for shimming. Most mechanics assume it's "stock" for that drive-train so they just bolt up and go. The tolerances of the hydraulics are pretty critical.

Park your car on a flat surface and while in gear with the brakes off rev the engine and see if you move. If you even feel it a little the clutch is dragging and possibly needs the slave shimmed. There is a procedure for measuring.
 
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