94 Concorde with odd transmission problems?

My 94 Concorde 3.5L has an odd tranny problem which doesn't seem to fit some of the other issues that were posted. The transmission simply refuses to shift at all unless I peg 4500+ RPM. Is this still limp mode? I thought that limp mode allowed second gear which I do not seem to have. I am thinking throttle pos'n sensor because it also shifts real hard when moving between drive and reverse.

I tried unhooking the battery terminals for a few hours to see if the problem would stop, but no dice. Fluid levels appear to be correct. A little help please.

Has your SES light ever came on? Tps could be bad, or one of your speed sensors could being going south on you.
SC