I had damper replaced, cost  $770.00, not bad     no more noise. saved old damper,called gm for this known problem  car has 11,500 miles  they said  they are replacing some but not with my vin ??????     anyway alls well. dwa175

At that price I'm guessing it's on the 07?

note        I been working on vehicles since 1963 but this damper has no timing marks or key way     must be new way of doing things,also note all noises gone.thanks dwa175

The balancer is a pres fit...no bolt to hold it on, and also no keyway, which is why it is important to have it installed properly. The engine timing is not mechanically adjustable, so no need for timing marks. The LS series of the Chevy engine is a full departure from what we're used to seeing from previous small blocks.....lots of differences between the two designs. Glad you got it handled, anyway! 

new in fo   just in  GM is going to increase warranty on cluth cyl  fully to 10 years this only but also note chevy dealer called and they are going to do same for front dampers  stand buy   dwa

I put a Fluid Damper on my LS engine, plus I have the fixture, drill bit and steel rod to pin the damper to the crank. This way the damper will never spin on the crank. This is very important if you put a supercharger on a LS engine.