Steering wheel shudder when parking.

[Carguy8888]

I bought this car recently with 58k to bang around NYC as my daily, this way I can have a little fun and not get as crazy with the abundance of morons roaming the streets here driving a newer expensive car. It was a 90+ year old lady who had to stop driving. It runs and rides great but there is one thing that annoys the s$^! out of me. Only when making parking maneuvers (as per the GM tsb) there is a vibration or shudder when turning the wheel mostly to the right which is common with a few GM platforms. The GM (TSB) technical service bulletin says to change the pressure steering inlet & outlet hoses which I had done by a competent shop with new fluid. It is now marginally better but far from gone. Any past GM techs out here? Thanks guys.

 

[HotZ28]

Change the fluid again, and use Lucas synthic PS fluid, then also change the drive surptine belt. They get lazy after a few years!

 

[Carguy8888]

Change the fluid again, and use Lucas synthic PS fluid, then also change the drive surptine belt. They get lazy after a few years!

Thank you Hot Z28. I forgot to mention I did change both belts tensioners and pulleys for the accessories and the supercharger because they are 20 years old. I will get the Lucas synthetic power steering fluid, they have good stuff. Do you know why it helps? the pressure hoses do not need to be rerouted a certain way or as long as they were replaced via ACDelco parts they should be good correct?

 

[2007LucerneCXL]

If the shudder showed up after the line replacement there may be air in the system still. Turning the wheel full lock to lock a couple of times may clear it out, just another option to look at, had the shudder feel after a PS pump replacement and this cleared it up.

 

[Carguy8888]

If the shudder showed up after the line replacement there may be air in the system still. Turning the wheel full lock to lock a couple of times may clear it out, just another option to look at, had the shudder feel after a PS pump replacement and this cleared it up.

 

[Carguy8888]

Does line replacement is GM's fix
The shutter was a little worse before I change the lines.They are a remedy to fix the shudder via GM. maybe there is still a tiny bit of air in the lines which I'm going to check but I don't think so.

 

[will1979]

did you ever get that sorted out?