Differential Howl T-SB-0076-08

This TSB was issued to correct the differential howl at speeds 50-70mph. I had the TSB installed on a 2008 Tacoma, and it didn't work. In fact, it made the howl worse. Has anyone experienced the same problem? Of course, I am getting all kinds of BS from the service manager. He even says this whine is really normal for a Tacoma!

 

If the whine were normal, why did Toyota issue a TSB? I am communicating with a service rep, but he has the standard BS line.

 

I'm having this same howling noise too. For me it happens around 40km/h and is more noticeable in cold weather. Has anyone discovered a way to fix this yet?

 

I had three differentials replaced in an effort to fix the whine/howl. None of which worked. Toyota now refuses to do anymore work on the problem. Bottom line is they can't fix it.

I even complained to the State Consumer Division with no results. State said that they had no power and my only option was to sue them. Which, I cannot afford.

The howl seems to be getting worse and I guess I'll have to have it repaired someday with my own money even though It is still under warranty.

 

that makes me feel better, because i have the whine and am well out of warranty.

 

If you had 3 diffs that means its not your diff howling. I would change dealer or get some private tech to figure out what is exactly wrong because current set of people is not doing that great of work.

 

I'm thinking about it.

 

any update of this situation?

 

I don't drive the truck much,25,049 miles. And,I am waiting until spring to have it checked out for something other than a differential. I just drive it to pull my boat.

 

Mine is in for a rear axle bearing howl, woo-woo noise. Maybe have a look there on yours....

 

Good idea! Thanks!