Thanks for the reply, Tech II.
Current codes are:
P0171 - System Too Lean Bank 1 (I have had this code off and on for years)
P0410 - Secondary Air Injection System
P0418 - Secondary Air Injection System Control A Circuit (I pulled the fuse on the secondary air pump)
P0452 - Evaporative Emissions System Pressure Sensor/Switch Low
Do any of these sound like they could relate to transmission issues? Again, thank you.