Mechanics

FRONT-END VIBRATION

2008 Cadillac DTS

Shakes or Wobbles problem
2008 Cadillac DTS V8 Front Wheel Drive Automatic 54000 miles

2008 Cadillac DTS, LuxIII. Noticeable vibration in front-end, at speeds above 50 mph, more noticeable when accelerating. Have been to dealer twice with this complaint. 1st visit, replaced both front hubs/bearings - little improvement. 2nd visit, replaced both outer tie rod ends, front end alignment and 4 wheel balance - again, some little improvement, but vibration remains present. Beginning to think maybe struts, srut mounts or something in the drivetrain (dealer said they checked cv joints and they were not loose). Any ideas?
Avatar
DTSNewbie7361
March 23, 2010.




Does this have factory wheels and tires, or has there been a wheel upgrade? The next step I would try, if it has not been performed yet, is to swap the complete set with a set from another vehicle. This would all but completely eliminate the possibility of wheels/tires. There are alot of wheel/tire issues with these vehicles, they are sensitive. When the tires are balanced, are they being measured for road force variation? This can detect tire irregularities that a normal spin balancer will just throw weight at. It does require a specific type of balancer.

Factoryjack
Mar 23, 2010.
Have the factory 17" Chrome wheels (stock on the Lux III) and the Michelin Pilot tires (also OE I believe). Taking it to a local front-end shop next week. do you know anything about Hunter Road Force Balancing (supposed to be more accurate way to balance wheels) ?


http://www.2carpros.com/forum/automotive_pictures/505800_dts17_1.jpg

AD

Tiny
DTSNewbie7361
Apr 11, 2010.
Road force balancing, road force variation, same as I mentioned previously. I can give you the nutshell description. It applies a load to the tire to simulate road contact, and determines irregularities in the tire.

Factoryjack
Apr 11, 2010.

AD