bad88t-top Posted February 25, 2009 Report Share Posted February 25, 2009 Hi guys: I really need some help w/ my 04SS AWD. I've only had the truck for a year, but it's done this since I bought it. I have a really bad vibration under hard acceleration. The truck has 2" drop spindles and shackles on it so I originally thought it was a pinion angle issue. I've since added a 2 degree shim and it made no difference. It also vibrates with the stock and also my 22" wheels, so i eliminated that from the equation. It feels like it's coming from the back but I'm starting to think it's coming from the wheel bearings or front diff bearings. The more I read on this site it appears the pinion angle is probably where the issue is. Any information anyone can provide me would be greatly appreciated. Thanks: Bill Woessner: PGH PA Quote Link to comment Share on other sites More sharing options...
skeet Posted February 25, 2009 Report Share Posted February 25, 2009 i'd check wheel balance, then again i see you mention stockers also, and the front ball joints? , check the drive shaft for defects ie: dents and so forth, cant see it being the rear with just 2 inch shackles but then again you never know Quote Link to comment Share on other sites More sharing options...
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