S80 2003 T6

[lmurray50]

Will the transmission fluid change cited in the previous post work on my model year, including the source for the filter (2000) Chevy 3800. I would like to change my coolant. Anyone with instructions? Is there a drain plug? Is there a recommended coolant to use after the drain? I had to replace my brake booster at 60K- there was a vacuum leak (DIY). I have been told this is a common problem. Anyone know of a recall? Now that I have replaced the booster I see a sensor message. How do I re-set the computer? I would like to replace the stock air filter with a K & N. Anyone know the right part number? Thanks for your help.
Leonard