Dealer very nice about the TSB

I know this has been talked about over and over, but wanted to let you know about my dealer Pat Lobb Mckinney Texas.
I went into the dealer told him my concern about the suspension, he took my vin down and said we have a test that we do, it will take about 15 minutes.
Service manager came back and said they would do the 4 leaf change out on my 09 Prerunner as soon as I could get back to dealership

 

So what was the test that they had to do?

 

I did not ask about the test. Just glad I did not have to go into hastle like some of the others on this website has.
I forgot to mention my truck is a Certified 09, 31,000 miles

 

The dealer ordered the parts for mine today and I'm having them put on as soon as they come in. All I did was show them where the bump stops had rubbed the frame a few times when I had my trailer hooked up.