Mystery Vibration turned out to be driveshaft

Recently had my 30k mile service done and asked the dealer to investigate a vibration at low speed, 5-10mph,while gently accelerating up a grade. They initially thought it was engine missing, but then ruled that out.

They called in a regional rep and he determined it was the torque converter, so they replaced that. No luck.

Next they swapped a drive shaft from a used tundra on the lot and vibration went away. They ordered a new driveshaft and replaced it the following week. No more vibration. Whole process took about 3 weeks, during which they had my truck for 5 days and gave me a loaner for most of those. All covered under warranty.

Just passing along the experience.

 

What did they say was wrong with your driveshaft? Out of balance? Bad U joint?

 

Sounds like the issue I'm having on an incline there is a slight vibration at low speed, then goes away. Doesn't do it right away though. So this is a good starting point and good info.
Which drive shaft did they replace? the forward one or rear ome?

 

How many boxes of doughnuts did you bring them? That’s awesome the dealer took care of you!

 

Not sure what was wrong with it, and I did not think to ask which shaft it was...

 

Toyota only sells them as a set because they are balanced as a set.

 

Thanks, good to know... Looks like I'll be investing in one.

 

They are expensive. Might want to check with a shop that makes driveshafts and see if they can rebalance it for you.

When I destroyed the rear half a shop kept the first half, added a new steel 2nd half and rebalanced the whole thing.