So after checking so many things, I came across this suggestion on another blog.
"There is a service bulletin for that problem on your vehicle. It involves two things. A software update for the engine controller and a cleaning of the throttle body."
Bulletin No: 04-06-04-040
Date: June 14, 2004
Idle Instability, Low or Rough Idle with Electronic Throttle Control (Clean Throttle Body)
So the cleaning is no big deal and the guys at the first shop cleaned the mass flow air detector (since I have a K&N air filter they worried about the oil on those filters). The software update required a Tech2 so the dealership checked my current version and then updated the software for $120.00. So far no problems with the voltage or oil pressure dipping when breaking or making low speed hard turns in the parking garage or on the mountain switchbacks. I will keep an eye on it and if anything else develops I will be sure to let you all know. However, in this day and age of internet and email, it does not seem that it would be that hard to contact specific owners about recalls, software updates, or other safety type issues pertaining to their vehicles. Thanks for all the help guys!
Saturday, February 25th, 2012 AT 6:00 PM