Creak
In my experience creaks can originate from any point on the bike and sound as if they are coming from the drivetrain. It's a pain, but you'll have to check everything to eliminate the variables. Plus it's a good time to clean and inspect your bike. Check and grease the seatpost bolts. Check the chainring bolts (a very common one) and move on down the line.
If you eliminate the component variables and still have a creak, then move on to the frame. If you tighten any bolts on your Pivot, make sure you use a torque wrench. Torquing them back to proper spec may be all you need. The torque spec chart is on the web page under the Tech button. Make sure to prep the bolts according to the chart. If it calls for anti-sieze or lock-tite, do not use grease. The only reason I make such a big deal out of this is I have seen the effects of the "tighter is better" mentality and they aren't good. Don't just go reefing on those bolts. It's a precision machine - treat it right.
-Adam @ Pivot
