Transmission Vibration

[bobcostas]

Hey Dudes!

I posted a similar thread under the drivetrain forum to no avail, and now it seems it may be worse (maybe)

I have a four speed standard on my C10. When its idling with the clutch engaged, it seems to make an oscillating rubbing noise and the stick starts to shimmy. I was thinking the clutch might be bad, but i have never experienced a symptom like this. Now it seems 3rd gear is a little rough. there is a shudder at some speeds. it also presents itself around 40mph in 4th.

Do you guys have any thoughts?
I changed the fluid this AM (the old stuff was also red, which doesn't seem right. I put in 90wt)

thanks a lot dudes.

~BC

[padresag]

what does it do sitting in neutral and idling. does it change when you push in the clutch?
how much free play in your cluch pedal?
pull th inspection cover off the bottom of the clutch assy am
nd have a look
ron