So I'm sitting in traffic today and suddenly the CEL comes on. Completely boggled my mind. Then, I go to take off and the truck is sluggish as all hell... no torque what-so-ever. After about 10 minutes, I realize that for some reason the truck isn't downshifting into 1st when I stop. So, I try to manually do it. Nothing, just goes to 2nd. I've had a tiny leak from my tranny pan gasket for a while now, but it might drip 2 drips a night. I check my tranny fluid periodically and even today it is still full. I'm getting a friends scanner tonight to see what code(s) are thrown. Anyone have any ideas or has anyone experienced this before? If my name doesn't give it away, I have a 2001 R/T.