Ok, I have searched for a bit, and I didn't really find anything on this. I bought my K5 right after a new transmission had been put in. It's a 700R4. My truck is an 89, but all the electronics have been removed. I understand that there were a few different ways for the lockup to be triggered throughout the years of production. How do I identify what type of lockup I have, and what type of TC I have? I can't say that I have ever felt the lockup kick in sice I bought it.