suspension thunk... please give me ideas

[kvkvkv]

Hi

2018 Sonic Coupe. Have a pretty good thunk in the front driver side area when dropping off a bump.

Dealer changed out front struts, sway bar links, and the transmission (seriously).

Still thunks... no change.

Could it be the control arms? Wheel bearing? Plastic trim pieces? Anyone else have this issue. Tired of difficult to solve problems.

 

[Joesonic]

My dealer swapped the sway bar end links. Solved the problem for about 6 months and then it came back. It's most noticeable when you are pulling into a driveway apron. I asked them to take a 2nd look and they said, "Well, they get "squishy" and there is nothing we can do about it".

I also have a "thunk" noise from the rear shocks. Dealer suggested changing them but quoted me $600 to do it. I only had about 30k on the car at the time (now have 48k) and I figure I'll just change them around 60k along with front struts (and strut mounts).

As for your problem, if the dealer changed the front struts, hopefully they changed the strut mounts as well. Those can make a "thunking" noise as well. The CV joints can also make the same noise. But you will usually notice it when you accelerate or come to a stop. Not sure why they changed the transmission. Those are not cheap...