Mystery Creaking

Rowan404

I have a GT Sanction that creaks A LOT and I at this point I have no clue where it is coming from. It creaks while pedaling so I assumed it was one of two things. At first I replaced the bushings in the I-drive dog bone as they are notorious for creaking. That didn't change anything. Just now, I replaced the bottom bracket and still nothing changed. Here is a link for a video I took of the creaking to give you an idea: https://drive.google.com/open?id=1OyuA- ... I9Syqm5Get
Appreciate any insight on this. Also I don't think it's the shock bushings because it doesn't creak when the shock compresses.

cycleclinic

Does the bike have old fashioned QR's? If so change them for a good pair of shimano and do them up tight.

The Rookie

So does it creak if you just push down on the top tube and not the pedal?

Rowan404

It creaks when pedaling and pushing down on the pedals but not when pressing down on the top tube. It's a 2017 so it has all the up to date boost thru-axles

JBA

Does it creak when in the saddle and standing to peddle?

skooter

Could try a bit of lube on your seat post.

david7m

Grease your pedal and crank treads?
Dave

The Rookie

If it only creaks with a pedal pressed it must be pedal, BB or the cranks aren’t rightened together properly.

kajjal

My bike only creaked when I pedalled and it turned out the bottom headset bearing had gone. Some of the creaks come from less obvious places, just take your time to carefully check everything.

Rowan404

I'll try greasing the pedal threads and see if that helps. Everything else in that area is thoroughly greased and put on right. I know it's not seat related because it creaks when standing as well.

steve_sordy

Cracked frame?

JW599

Have you also checked for loose spokes?

These can creak under pressure when the nips are loose.

Rowan404

Well I finally got it to stop creaking. It turned out to be a little screw in the I-Drive system that must've not been greased during assembly.

david7m

Result!