I have a 2009 Grand Caravan, and at Cold startups there is a high pitched, loud, screeching sound. It stays on for 60-90 seconds then goes away. I move the steering wheel while it is making the noise and the tone changes, but I think it is only because the pump is putting pressure on the motor and the RPM's drop a little. I believe there is bulletin out for the 2011-2014 model, but I cant find any information about the 2009. Does anyone have any thoughts.