[Moser97]

Welcome aboard Rockpile. I can't help with the clunking except to say it sounds a little like shocks. The mindset around here and the Blazer forum is to stick with the OEM Bilsteins. The Monroe Reflex are getting some decent reviews too. I got cheap Monroes and Monroe air shocks for mine and wish I would have gone with the Reflex now. I would stick with the Uniroyals when you replace the tires. I had all kinds of ride problems when I got my '99 Jimmy with some brand new cheap Firestones on it. I went back to a new set of Laredos and it rides much nicer. The Jimmy and the Blazers are essentially identical. The Blazer forum here is much busier than the Jimmy forum, as well as being super informative. They will welcome your Jimmy questions. The electrical noise is a total baffler. Ask over on the Blazer forum I bet someone has some experience with it. I also noticed that the mod on the Pontiac Bonneville forum is a GM and ASE certified tech. I may shoot some questions at him in the future. Good Luck.