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I plugged in "main powertrain harness" in alldatadiy, comes back with 182 hits.
Would be interesting to know what functionality this "main harness" serves/connects to.
Maybe the second or third time is a charm and the component causing the overload condition will manifest itself!
That would be the RF hub.
Way too common of a failure point when there is water intrusion in the back.
The hub itself is not overly expensive, problem is that only a dealer can do the programming, so a hassle in my book.
No.
Everything is fused to the hilt or protected by the modules, not sure how that is even possible unless someone has altered something.
Any idea what "main" wiring harness they want to replace?
So, you have a new battery, is it fully charged? No crank could be caused by a myriad of different things.
I would start by looking for an alternate ride to the appointment.
Sort that out, then return to troubleshooting the truck.
You might want to fill in the information about your truck details in your signature.
Could make it more focused to get truck specific replies to your questions.
From what I can tell looking at alldatadiy wiring diagram, there are 4 actuator motors. All driven by the "module-tailgate" Fused by the F30, controlled either by the BCM or the "switch- tailgate handle"
I gave up on the nav. when it expired/failed.
Went with WAZE and google, have not looked back.
Not sure it that would be an option on the bigger screen units.
That ever happens to my lights, I will drill two holes in the housings,
then flow low pressure dry nitrogen in them to drive out any moisture and go after the leak with a tube of RTV.
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