Vibration when accelerating/fluid question

[BillM]

I have had a vibration problem when acclerating
with my 98XLT. It has about 51,000miles on it.
I was thinking about changing the tranny fluid and
rear end fluid. What should I use? Think this could be part of my problem?
Bill M

 

[Jason_25]

Probably not your problem. Your rear end fluid should be changed around 100k miles.

Check for play in the u-joints. Also make sure your tranny cross-member bolts are tight.

I have the same problem but none of those solutions have helped me. I think it must be my cv-joints.