Took into dealership, now have thump in rear when I go over bumps.

[TheBiz]

I took my 2010 5.3 4x4 Tahoe (95,000 miles) into the dealership last week for a transmission fluid/filter change, they also rotated my tires while it was in there. I now have a thump coming from somewhere in the rear, it sounds like a hollow type of thump, sounds like its almost in the floor towards the 2nd/3rd row. I can only hear it when I go over a bump.

I checked the spare tire and all the suspension bolts, everything looks good. My initial thought was that when they lifted it on the car lift it stretch out the suspension and messed something up, however I cannot find any evidence of this.

Any help or suggestions would be appreciated. Do they loosen anything other the pan for the transmission fluid change? Thanks in advance for the help!

 

[fatboyracing]

any chance the lug nuts are loose and the wheel is bouncing

 

[03prox800]

Check your rear sway bar link

 

[Yukon John]

any chance the lug nuts are loose and the wheel is bouncing

Wouldn't be the first time...it happens more than you think.

 

[shortbusondubs]

Wouldn't be the first time...it happens more than you think.

sadly, you're right.

 

[slocaddy]

Seems odd that it happend after a service, but That sounds like the drive shaft slip yolk, pull drive shaft and grease splines.