Can anyone provide advice?

How do I reprogram my keys and fobs to a new ecm? Do I need to perform an idle relearn as well?

2001 Sentra SE 2.0L
Manual Trans

In order to program the key, one needs access to a Nissan Consult II scan tool and a Nissan ASIST computer...or in other words, a dealer needs to do it! The remote is a differant story.

your stuck going to the dealer in otherwords...

idle relearn you might have to, but there is a pedal dance for it. i would have to look it up in the fsm again...