Ok, I have installed several alarm systems in earlier model gm cars and trucks (pre 1995) and I am going to do an install on my 1998 GP. The car has factory keyless entry but I also want remote start and alarm. I can do the install but im unclear if the car requires the passlock module. Can anyone give me any info on this? I have searched to boards but havent found anything. If I do need the module, does anyone have a good suggstion on a brand to get? Thanks in advance guys.