2008 3.8L v6 PCM or APP
 

I have a 2008 buick lacrosse. goes into reduced power mode and im trying to figure out if it is the power control module or the accelerator pedal position sensor. I know both will cause the problem but do not wanna replace anything that isn't required.

I know this is a pretty old post but did you ever happen to get your lacrosse figured out?