http://www.bgfindashop.com/locator/index.php
A cost effective way to tackle this would be to find a dealer that offers BG cleaning services above and then mentioning the TSB to the dealer. I would bring up the fact that since it is a known issue and they're going to be in there for the BG cleaning service they should install the parts for you for free (technically not free since that $100 diagnostic fee would go towards a repair anyway). Buy the parts online for yourself for under $30 and arrive to the dealer with them or order the parts through them.
One thing I want to mention, I too have been having this occasional issue and know the TSB hasn't been done on my vehicle yet. Today I decided to blend e85 so I did 1 gallon e85 and 6 gallons 93, ended up with around e20 and to be honest the transmission feels smooth as butter. I can confirm this further through use of the paddle shifters as the issue was more prominent while using them, it is as well shifting smooth.
A cost effective way to tackle this would be to find a dealer that offers BG cleaning services above and then mentioning the TSB to the dealer. I would bring up the fact that since it is a known issue and they're going to be in there for the BG cleaning service they should install the parts for you for free (technically not free since that $100 diagnostic fee would go towards a repair anyway). Buy the parts online for yourself for under $30 and arrive to the dealer with them or order the parts through them.
One thing I want to mention, I too have been having this occasional issue and know the TSB hasn't been done on my vehicle yet. Today I decided to blend e85 so I did 1 gallon e85 and 6 gallons 93, ended up with around e20 and to be honest the transmission feels smooth as butter. I can confirm this further through use of the paddle shifters as the issue was more prominent while using them, it is as well shifting smooth.