I have a 2003 zr5. It goes into neutral instead of third gear. I've replaced both selinoid inside the tranny but it still isnt fixed. I've been reading but cant get a clear answer on this issue. I need help to figure it out. Please

 

When you dropped the pan what did the fluid look like? Was there debris in the bottom of the pan? Sounds like a classic 3-4 clutch pack failure.
Brad