Hi,
Just as a thought, these vans have issue with the power steering resevoirs filter clogs limiting fluid flow.
This may not be your case, but its pretty common with these 2001-2006 vans.
Fixed our 2003 by inserting a long thin phillips screwdriver and gently dislodged the filter at 90 degree intervals. The groaning etc was fixed immediately. That was about 3 months ago now.
I have responded to several other questions with this symptom.I had to research it myself before I did my fix because it was making me quazy.
Dave
Wednesday, December 23rd, 2009 AT 5:50 PM