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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29534
Experience:  GM Grand Master Technician 2007. 14 years experience.
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My 2001 chevy silverado 2500hd shakes around 35 miles per hour

Resolved Question:

my 2001 chevy silverado 2500hd shakes around 35 miles per hour
Submitted: 6 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 6 years ago.

GM Tech (Cam) :

Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

GM Tech (Cam) :

Does it shake all the time or just when accelerating?

Customer:

it shakes really bad around 30 to 35 and the it smoothes out i have changed the universal joints and the swing bearing

GM Tech (Cam) :

Ok, only when accelerating?

Customer:

yes

GM Tech (Cam) :

OK, did you throw a weight?

Customer:

what is that

GM Tech (Cam) :

weight on the drive shaft to balance it?

Customer:

i dont know

GM Tech (Cam) :

If all the u-joints are good, then it could be something in the diff.Do you have a set of jack stands?

Customer:

yes

GM Tech (Cam) :

Ok, and it is 2wd, so suport the rear end with the jack stands and run the engine with transmission in gear and watch the drive shaft.

Customer:

and then what

GM Tech (Cam) :

Watch the way it rotates, it should spin smooth, see if the shaft is jumping up and down.

GM Tech (Cam) :

just be sure the front wheels are blocked.

Customer:

if its jumping what should i change

GM Tech (Cam) :

WEll, it could be the shaft that is bent or something still is bad with the u-joints.

Customer:

could it be in my rear end

GM Tech (Cam) :

not as likely or it would make the vibration all the time or worse when faster.

Customer:

ok thanks so it could be my u joints or my driveshaft

GM Tech (Cam) :

It could be, do the test and see. If they do jump, then take it off and take it to a driveshaft shop.

Customer:

ok

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