Is the rear spring TSB only offered under warranty?

My truck just hit 50k and am just finding out about the TSB on the rear suspension. Is it only a warranty fix or will they do it anyway because of the design flaw?

 

falls under 3 year / 36,000mi warranty

 

Free if you're under warrantee. Expensive if you're out of warrantee.

 

But you can still ask...some cool dealerships have been willing to hook folks up.

If they dont- Getting your springs re-arched or getting a while new leaf pack will be cheaper than getting the TSB springs.

 

They won't even cover it under Extra Care Plan. Offered to do it for me for $1800 Canadian though. Installed 5100's and Toytec AAL for around $200.