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I'm about to order GP harnesses. I'm a little concerned about getting the correct part number and any help to easy my concerns would be appreciated. I have a 12/03 build date, ICP is on the valve cover just above the GPCM, and a Blue Sticker on same Valve cover stating 2004. I can share my last 8 of VIN if needed.
I've been getting people on the phone where the person that answered the phone were brand new and in training. This happened at the Ford Dealer and another very reputable business with high standing on FTE 6.0L section. The Ford Dealer just gave me the ****-12A690-** part of the part number at first, but then I called back and he gave me the beginning of "4C3Z". In looking for these -AA and -BA, I have received mixed results as being compatible with my truck. Some say I need 2Z. I think the 4C2Z is much easier to get quickly, but I'm still searching.
I would appreciate it someone with a similar build date or competent knowledge of what part I need, would share the part number. Thanks