I'm not sure what happened there but I think I wrote a response and posted it at the same time you wrote another post.
so, on your second part about the key, Why did you replace the key and lock cylinder?
to reprogram the passlock to your new key-
first you should hook your battery up to a battery charger because it may take a half an hour with the key on to program.
1. turn the key to on with the engine off. then try to start the engine (only try to crank for a couple of seconds) after it cranks for a couple of seconds let the key go back to the run position.
do not turn the key off. watch the security
light. after about 10 minutes the security
light should go out.
2. after the light go off, turn the key off for 5 seconds or so, then do step 1. all over again.
It may take a totle of three times before the relearn is complete. that's why I said about 1/2 hour. Sometimes, it will take after the very first time but don't count on it.
if you do it for the three times and it still doesn't start you may have to look at the wiring from the lock cylinder to the passlock module. There may ba abad connection causing the problem.