Possible driveshaft problems

[tybardy]

When my truck shifts (usually at low RPM's) and even sometimes when I spike the throttle at low speeds, there is a horrible clunk underneith my truck.

Logic tells me that this is my driveshaft, but I was wondering if anyone else has had this issue and how they fixed it.

 

[Modded]

Could just be loose!

 

[ecordell]

May not be the drive shaft, check your u-joints and replace them to eliminate that possibility, think it could be the trans?

 

[blueflamed03]

^^^ agree, sounds more like U joints. MUCH cheaper than a problem with a driveshaft.

Stick truck on flat suraface, in idle, and go from P to D, then D to R, see if it clunks while you move gears back and forth.

 

[tybardy]

yes, it clunks nearly every time I put it into Drive or Reverse.

I certainly hope it is not the tranny, I will cry!

---------- Post added at 05:51 PM ---------- Previous post was at 05:51 PM ----------

how does one go about inspecting the U-Joints?

 

[02tahoeindiana]

sameproblem...

 

[blueflamed03]

if it clunks going from D to R, and vice versa, I bet it's just U joints Ty.

 

[tybardy]

well that sounds better then the alternative... how much of a pain is it to replace? how much should I be looking to spend?

 

[jhellwig]

40 bucks, a vice, a hammer and less than an hour.