I've researched the subject before posting and there are many different answers I found.
The D4 just started flashing on my way home this morning. Car doesn't want to go to second gear, in first it goes fine then once it wants to go to second the speed just drops.
I think the tranny might have reached its time, but it may be something else.
Found a post about the paper clip method along with the image below, but none of the posts ever mentioned how to actually do this. Will it even work on my 96?
I made a thread
about PO301 PO302 PO303 error codes a few days ago, could this be linked to that?