Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
This a theoretical question: To retrieve DLC codes for Transfer Case I know to Ground DLC Pin 13 which causes selector switch to flash codes. However everything I can find just states to connect pin 13 to reliable vehicle ground. I'm curious as why none state to Ground 13 to 4? Is their a reason this shouldn't be done? Or, is this a really dumb question?
DLC pin 4 will work just fine, as long as it is a good ground. Pin 5 should work, too.
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