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

2008 CHEVROLET SILVERADO
220,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
Avatar
COOPER2025
  • MEMBER
  • 1 POST
No power to the OBD port, wonder which fuse number I should check first.
Thanks
May 14, 2025 at 10:58 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
AL514
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 5,482 POSTS
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
Advertisement
Avatar
AL514
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 5,482 POSTS
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.
Images (Click to enlarge)
Attached Media
Attached Media
May 14, 2025 at 1:32 PM