[OutlawDrifter]

I'm in the camp of routine maintenance. If you change the oil and the tranny goes out, it was dying anyways. Happened on my 1998 Z71. Dropped the pan in my 220K 4l60e, did a new filter, and refilled the oil. At the next oil change, I pulled the plug and "changed" the pan oil in the tranny again. It died about 1500 miles later. It was just on it's way out, period.