OK, I tried to post yesterday after I got home from the dealer, but the website was down until sometime after midnight. The dealer sealed and recalibrated my sensor (K0B002). They also replaced a 'skid control cushion" part number 88278-0C010 while they were at it.
As far as my shudder, reported to them between 45 and 50 mph, engine up to temp, cruise off or on, flat road, steady throttle. They said they could not dublicate the trouble, BUT did a trans software update (EL1701).
The forward impact sensor seems to be fixed. We'll see in the weeks to come.
The trans software update DID MAKE A LARGE DIFFERENCE in the trans shift points. Now, with a light touch on the throttle (how I normally drive) the trans upshifts a good 200-300 rpm higher than it previously did. 5th and 6th gear lockup is also delayed, a vast improvement. In a nutshell, the transmission works now as I feel it should have from the factory. I am very happy.
Now for the odd part. I drive in patterns. The pattern I drove in yesterday after the updates yields 20.6 to 21.4 mpg before the trans update. Yesterday I got over 23 mpg on the same loop. Both of these mileage events took place after filling up at the same gas station. Odd that the trans update would give me such a boost in mileage. I'll keep an eye on the mileage and report back in a month after I gather more data.
A question for you fine people. On my work sheet from the dealer, there are no TSB # at all, just the numbers that I listed above. Can anyone tell me how I can find the TSB # of these both updates?
Thank you all.