fourdegreediablo

Hello everyone ,
I have a 2009 HHR 2.2l automatic trans . This car is is vibrating at 65 mph , before I get too detailed I am going to say what parts I've replaced , this car is a work vehicle so the money
i've spent on this so far isn't coming out of my pocket !
1. Replaced all hub bearings front and rear
2. Replaced all motor and transmission mounts
3. Replaced transmission
4. Replaced control arms
5.Replaced Front brake pads and rotors
6.L & R cv shafts
7. Replaced and or balanced all tires ( pulled off tires and checked rims for being bent )

Ok guy's I really need your input I've done everything I believe I could've done , maybe I've missed something ...
The vibration is about 65 mph and it is horrible and oscillates from front to rear when driving .
Only thing that is the vibration lessens when I turn left and right , so its acting like cv shafts , even though I replaced them . I loosed the cv shaft nuts and smacked them again just to make sure they were in all the way .
At this point I'm very frustrated , maybe cv shafts , even though they are new or the steering rack I do not know . Please someone help me to better diagnose this issue .
Thanks in advanced .

Oldblue

I’ve chased that shake , inspect the intermediate steering shaft and the steering rack
on my 2007 LS , the steering rack was loose at the input shaft

you have done all the mounts?

https://www.chevyhhr.net/forums/prob...problem-60373/

the shaft

https://www.chevyhhr.net/forums/main...t-short-51216/

the rack

https://www.chevyhhr.net/forums/main...t-short-51216/

fourdegreediablo

That's my next move , the vibration will lessen if I steer to the left or the right but it's worse in the center

geg

I wrote some thoughts here, but then it turned out that I misunderstood the problem. Inattentive translation. So I deleted my message.
In fact - I can not say anything definite. But I noticed that you did not check the steering. Perhaps Satan settled there.

Doc brown

My steering rack had to be replaced due to this shake.

Oldblue

Ah, yes ! The rack it can stretch your patience

Doc brown

Gee that's how I felt when going through the suspension rebuild this summer.

fourdegreediablo

If it was the steering rach , wouldn't it vibrate all the time ? This only vibrates at around 65 mph and when I steer to the left or right it goes away like it would if the cv shafts were bad . I'm not trying to debate just get a better understanding .

Oldblue

That’s what I was thinking too, but nope

donbrew

What sort of mechanic would suggest a new trans for these symptoms? I'm surprised they didn't jump at a new computer first.