Originally Posted by scotishguy88
Why can't GM use parts that are easliy replaced?
It'* not that GM can't use parts that are easily replaced, it is that the aftermarket always lags behind when it comes to replacement parts. The only ones that have the original designs are those that manufactured the OEM parts for GM, etc. I think the standard time limit on designs is somewhere between 5-8 years. That means that in that time frame, the designs are owned by GM, after that they are released to the aftermarket. Sometimes you could see an aftermarket supplier buy out the design early to service the market, but not always. It all depends on demand.
Onto the shocks and the original question/problem of this post. As I stated in another thread, if your problems are primarily when the temperature is below freezing, it may have water in the air assist side of the strut. I would suggest that you pull off the rear struts, take them inside (or someplace warm) and see if any water comes out of the air assist side of the struts. You may have to position the air inlet down and then use a vacuum or something to suck out any air inside the strut to make sure that you get all of the water.
Water in the strut could make them practically lock in below freezing temperatures and make your car handle like absolute crap. If this is happening to more and more people, it would seem like water ingestion into the ELC system is a concern for us all. It almost sounds like there may not be a moisture trap or any preventative measure in the ELC system to remove moisture.
It'* something to check out and since the rear struts aren't all that difficult to remove, it'* worth a try.