I am also looking at buying a Grand Prix and would like to know common issues. I have already noticed the blower motor resistor is a common problem since all but one of them I've driven so far had that problem. I have been taking each of them to a repair shop for a free inspection and every one so far has been reported to have oil leaks around the oil pan and various other areas. Is that anything to worry about? I had an 03 S10 with the 4.3 that always had a oil-soaked oil pan and it ran like new so for now I'm not too worried about that. Currently I have my heart set on a GTP sedan with a clean history. Its got some clunking up front when going over bumps and it feels like it misses when you give it a lot of gas. The front struts are brand new so the current owner's mechanic told him it was the brake caliper brackets causing the clunking. I dunno if I believe that, but I can't imagine it being anything serious. Its got 133k miles so I'm hoping a solid tune-up will fix the missing. I've never driven a supercharged car before so I'm not familiar with the spark retard and stuff like that.
