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George H.
George H., ASE Certified Technician
Category: Chevy
Satisfied Customers: 18664
Experience:  GM Tech ASE Master Tech 15+ years
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Installed new u joints now have vibration, 2001 Silverado

Customer Question

installed new u joints now have vibration
JA: What is the model/year of your Chevy?
Customer: 2001 Silverado 2500 hd
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: put u joints on, now have vibration, have not tried anything else as of yet
JA: Anything else you think the mechanic should know?
Customer: no
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Chevy
Expert:  George H. replied 1 year ago.

Hello I will help,

These are the U joints for the rear driveline?

How did you remove and install them? Press or hammer?

Did you check the joints for free play after installation but before putting the driveshaft in place?

Customer: replied 1 year ago.
u joints all around (3)...... cut them out...had free play
Customer: replied 1 year ago.
gotta go to work will check back later
Expert:  George H. replied 1 year ago.

Sorry, I was not notified of your reply.

So the joints don't have a needle fallen over preventing the cap from fully seating and all the clips went in with no problem then you backed the caps out to the clips and verified the joint was free to move without binding?

You didn't change the phase of the pieces of the shaft? Everything went back together the way it came apart?

When you put them back in did you use a press? A hammer? How?

Customer: replied 1 year ago.
hammered in
Expert:  George H. replied 1 year ago.

OK, being aluminum it is possible to bend the yoke unless it is supported well.

Did you have to burn the lock out or were there already clips in?

Same phase in the pieces? Nothing got turned around?

Customer: replied 1 year ago.
clips were in nothing got turned around
Expert:  George H. replied 1 year ago.

OK, first pull the shaft and slowly work each joint in both directions to feel for any binding.

See if you can spot an errant hammer blow or any damage. If it was quiet before the change then it has to be in the assembly of the joint. Either you will see a cup out of place or something binding as it rotates