Passlock 2 problems?

Well heres the story, about a year ago I installed a Viper 550ESP alarm,RS combo into a 2000 Grand Am GT.  No problems at all, I used a universal Passlock 2 bypass module one that has dipswitches for variable resistances.  Everything worked fine using either the key or the R.S. to start it.  I got a call from her tonight, cause she's a friend of mine, and tells me her car won't start.  So I started to troubleshoot over the phone, turns out she hasn't used the R.S. for about a month cause the battery in the remote is dead.  The car just cranks and doesn't turnover, so I told her to wait 10 min( thinking it went into long tamper mode) and try it again.  It then started for about 2 sec. and died.  They could also keep it running while spraying fuel at the injectors.  So I told her to turn the key to the run position with the doors closed for 15min and try it again.  No LUCK!  She then told me that it did this when she bought the car- Before I put the R.S./Alarm in.  The vehicle was under warranty then, so she called the dealer cause it wasn't starting, they towed it and when it arrived at the dealership it started right up.  So I'm thinking it's the PL2 decoder built into the BCM or the key cylinder.  The only other thing I think might affect it is if the bypass module is staying on maybe due to a faulty brain backfeeding a ground to the bypass.  That would be rare but I'm going to drive 3 hours on Tuesday to check it out.  ANY help, comments, or suggestions are greatly appreciated!!!!  I also plan to bring a 555L and all the parts and tools needed to resolder the PL2 system back to stock, and if nessecery pull the entire alarm.  Oh, and I also told them to check ALL fuses, in case of a blown fuel injector fuse.

Thanks in advance for any help, this is by far a better forum than the one on DEI's directechs site!!!!!!

-Brandon 

Thanks for the reply JWorm, that was the only PL2 bypasses we had at the time, now it's nothing but DEI bypasses.  That's something I will try out. 

Anyone else have ideas, maybe bypass PL2 completely?????

Thanks for the advice floaterr.  I know their was someone helping her and they changed the fuel filter.  I'm no mechanic, but if it has to do with the PL2 system, I should be able to get it to work whether I have to bypass it or not.  But if its mechanical I doubt I can do anything.  I'll still be driving 3 hours their and 3 hours back just to check the PL2 bypass, and maybe pull the whole thing out.  You know how some dealerships are, if they here of a remote starter installed they'll blame everything on that.  I'll be going their tommorow, and whatever I figure out I'll post it and let you all know how it went.  Until then, any other help you guys have is much appreciated!!! I will check this forum right before I leave!