10/07/2026
This 2014 GMC came in after a wiring harness fire. The harness and fuse box were replaced, only to find that nothing wanted to communicate. On newer vehicles, all the control modules communicate with each other through the CAN bus, so one wiring issue can shut down communication across the entire vehicle. After hours of tracing circuits, verifying connections, finding the problems, and reprogramming all the control modules, we finally got this thing to start and move under its own power again. Jobs like this are a perfect example of why wiring repairs take time, patience is key when you're dealing with a massive electrical repair.
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