So I've been having problems with my caddy lately. I notice the problem mostly when my car is hot and I have the ac on. It starts to stutter alot and feels like it wants shut off. A mechanic ran the codes and pulled up p0103 p0325 p0441 p1361 and p1371. He said it could be the optispark. Seemed like he wasn't to sure though. I'd like to hear what you guys think of my problem and to see if you guys could help me out before I drop money on a new opti and end up with it not bein the problem. Thanks. I got the first three codes fixed already