denalis got some vibration

[Tribalbreak]

so i have another mystery... now in addition to this squeaking sound (prev. post) the truck has a vibration when im accelerating... at first i thought maybe drive-train, but when i put it in neutral and hold the gas at a certain rpm, i can feel the vibration slightly... could having a partially clogged cat on one side cause this? the truck just got a tune up but i have been suspecting that my passenger side cat is bad... i just didn't know if that difference in back pressure could be causing this vibration.

 

[Rivieraracing]

Try tapping on the cat while the rig is running, might be broke up in there!

I'm not sure if that would be your problem though!

 

[Tribalbreak]

it seems like it might be getting worse... it all depends... it seems like if i hold it at certian rpms the whole truck is viberating now... if i let off the gas it stops... also if i go wot it dosent seem to vib as much