I still have my violent rattle... Along with my violent shake, a squeal seems to be coming from the front passenger side as well occasionally. The rattle is when I have the gas pedal down, when I take my foot off, it's just fine, but especially when I'm accelerating it'll be really loud and just shake... I can hear things in the back moving around and the doors about to fall off and it's not very pleasant... Any ideas?? When I got it back from the shop they put on a new fuel line and a new pump if that means anything to anyone 79 K5 Blazer Cheyenne.... That's all I have to say about that.