06/19/2026
A customer recently contacted us about his 2022 Silverado 1500 that would start, but wouldn't shift into gear. To make matters worse, the dash was lit up with numerous warning messages.
After diagnosing the issue, we traced it back to the TCM (Transmission Control Module). The culprit? A damaged power wire and CAN bus wire that had been rubbed through, causing communication and transmission control issues.
It's amazing how two small wires can bring an entire system to a halt and create so many symptoms. Proper diagnostics are key to finding the root cause and getting our customers back on the road without unnecessary parts replacement.