i'm trying with all my might to find one, but can not. the free ones mapped to your vehicle "selection" at autozone stop at 2000, but the impala isn't included in that. traditionally, i am quite good at finding these, but am having no luck with an impala one. i need to replace a neutral safety switch/gear switch on a 2001 chevy impala ls with the 3.4, but don't know where to start unscrewing screws, and don't want to break anything. the car will occasionally not crank in park, but will in neutral. only recently has the "neutral shift" been unable to fix matters, so i doubt that this problem is a problem with the chevy "passlock" or whatever it is called-- system. i don't believe that this is a ignition problem, though i haven't put a code reader on it following one of these episodes. thanks.