Is there any reason why this this cap (Part # 1507 0014) would not be suitable for a 2004 LB7 D/A? I don't know of any fuel system change between 2003 and 2004 that would necessitate a different type of cap?
Just to be sure I took a visit to the parts dept at the local dealership. They could not find a part # for the 2004 D/A and they even called GM to verify. They did verify the part number for 2003.