I called the dealer today regarding the recall. Service manager says that they look at the casting # to see if it needs tested for pressure relief valve problem. The bulletin that was posted here in Feb doesn't mention anything about a casting #. It says that a special tool must be used to test the valve. Any of you guys worked on this recall, and if so, is my dealer right?

They might be thinking of the other recall. F/CMVSS Noncompliance - Brake Hydro-Boost Relief Valve Seal Fracture #04004A - (Jun 18, 2004)
This is the one for the relief valve and is an inspection for numbers and paint marks.

The new one, Product Safety - Hydro-Boost Accumulator Over-Pressurization #05006 - (Mar 23, 2005), uses a special tool to test the accumulator.