shifts seem slow but I just had the battery pulled for a week while the engine was pulled. Doesn't seem like a slip that's for sure.
It takes the computer a few miles to relearn proper shifting when you disconnect the battery that long.
Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.