Problem #1) Any ideas as to why my 4L30E tranny pops out of the drive gear occasionally? It seems to only do this after it reaches normal operating temperature....and I can force it to pop out if gear if I drive it hard...and play with the accelleration.

I have 160,000 miles on the tranny. I just bought it... And I just had the tranny fluid and filter changed to see if that would help solve my problems. It helped, but did not fix the problem.

The problem seems to be temperature/electrical in nature, or maybe it's just time for an overhaul??? However, there are no codes to refer to and the tranny works great in manual mode.... no slipping! So I'm hoping someone can point me in a direction of a "quicker fix."

Problem #2) It takes 2 seconds to engage in reverse. Why?