zamimj222
I had a similar thing happen to me after filter & fluid change on our '04 TB. The wine didn't start until the next day or two, when cold @ 1st start up. It would continue until shifting into 2nd gear. This went on for a couple days. I found a post about a similar situation & the problem appeared to be the plastic filter. My guess is that a sonic weld joint would break when the fluid would be pulled thru it, specifically when cold due to the thicker fluid then. I pulled the pan & installed a new filter & the problem went away. Guess I got a better sonic welded filter.
As for the fluid question, be aware that GM dropped the Trade Mark Dexrom III in '06 I think. Before that, anyone that made & sold this stuff had to have it meet GM's certification. After the new generation of fluid came out (Dexron VI) GM did not want to continue the certification & policing process of the old stuff, so they dropped it. In essence, this allows anyone to sell their fluid as Dexron III, which may or may not meet the old spec. When the new Dexron VI came out, anyone wanting to sell it had to be licensed & certified by GM, so any NEW VI should say it's certified from GM or meets their spec. The cheapest place I found to get the VI is from Wal Mart under the label of Super Tech. It states that it is "GM APPROVED" for use where a DEXRON VI product is recommended (with the register copyright symbol) I do not endorse this but am just passing on information that I have read. I have used this transmission fluid in ALL my vehicles that used the old III stuff and have not had any issues.
Here's a link with an explanation about the process.
DEXRON®-VI - GM Techlink
Hope this helps.....