Problems with 2007 GMC Yukon SUSPENSION

Mechanic ( ase certified) attempted to replace front lower ball joints , stated frame was rusted to the point of he was unable to initiate the repair.

I have a vehicle with a ride package called premium smooth ride with a gm factory code "zw7". both gm and gm dealerships have a catalog issue that resulted in me buying an incorrect and dangerous rear shock. i have worked for 6 months to resolve the issue and have a vehicle dangerous to drive as the replacement part referred by gm is incorrect. the oem manufacturer (sachs) in france has concurred that gm is at fault. gm is having consumers put on a factory replacement part incorrect for vehicle and will not allow me to speak with anyone within gm to resolve the matter. i have it well documented and it has also been an issued for yukon owners with the "premium smooth ride" option. sachs in france provided gm with a factory shock with "nivomat" technology that shared the ride load with the rear springs. sachs has since discontinued the product and as such no replacement part can be bought. a change of both the springs and shocks must be done and gm refuses to acknowledge the requirement or offer a solution. instead they send drivers down the road with a dangerous ride set up. when we drove our vehicle after using the gm recommended shocks, it rode very rough and when we got up to speed it actually bounced around on the highway and was difficult to keep on the road.

The gmc continues to randomly not start or deactivate the stabilitrack, anti-lock brakes were disabled, and the check engine light are all on. this problem happens almost every day and the dealer is unable to identify the source of the problem after several attempts. *tr

Tl*the contact owns a 2007 gmc yukon. the contact stated that while driving 50 mph the contact heard a grinding noise near the front driver side tire. the contact took the vehicle to a local mechanic who stated that a broken wheel bearing and hub cap caused the noise. the mechanic replaced the wheel bearing and the hub cap. the mechanic didn't see any damage that could have caused the wheel bearing to malfunction. the failure mileage was 44,000. updated 01/12/11*lj

I bought a 2007 yukon and there is a vibration when driving at highway speeds. i changed the tires at the dealer 14 times and i also changed the rims with no results. the dealer serviced the car but the vibration remains. *tr