No power to the OBD port which fuse should I check?

2008 CHEVROLET SILVERADO
220,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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COOPER2025
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No power to the OBD port, wonder which fuse number I should check first.
Thanks
May 14, 2025 at 10:58 AM
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AL514
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Hello, power for the DLC (pin 16) comes from the LTR Fuse 53 20amp in the under-hood fuse block. I'll post a wiring diagram of the circuit as well.
May 14, 2025 at 1:22 PM
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AL514
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Here is the wiring diagrams for the Data link connector, notice power also goes to the I/P Accessory power outlet, so I would make sure nothing fell into the power outlet and shorted it out, blowing the fuse.
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May 14, 2025 at 1:32 PM