Hi,
It sounds like a connector issue. There is a technical service bulletin related to this issue.
The C1575 connector (molded lead frame) appears to be defective. I attached the info below. It indicates a production date. Check to see if your truck falls within the date provided. You should find the date either on the door frame or under the hood.
Take a look through the info I provided. Note that the molded lead frame is internal. I attached a pic of one. See the last pic below. The OEM part number is AL3Z-7G276-B. I have a feeling this is the issue.
Let me know if this helps.
Take care,
Joe
See pics below.
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Thursday, November 23rd, 2023 AT 10:01 PM