I have heard the number is on the sticker in the door, that sticker is missing in my truck so I had to pull the computer. It’s pretty easy to do, just remove the metric bolt in the plug under the hood and take the plastic cover off above the brake pedal, took me about 15 minutes. I also cut an access hole in the cover before reinstalling so I can take my chip in and out in about 3 seconds. Here is a pic of the chip and computer installed.
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