01/15/2026
Today was one of those days for a new company that let me flex some customer service muscles.
Every diag doesnât always get you the right answer every time.
Every repair doesnât result in the desired outcome every time.
Problems come up that you simply didnât anticipate and can cause serious setbacks when they do.
an example from this week:
2019 GMC Sierra - presented with what appeared to be a faulty accelerator pedal. Had codes indicating a fault in one of the two pedal position sensors built into it. I watched live data, checked the circuit with my multimeter and confirmed a bad pedal assembly. Got the new part, installed it, and verified readings were correct. Customer picked up and didnât even make it home before the problem happened again. Customer brought it back a couple days later and I spent all day duplicating the issue and concluded I needed more sophisticated equipment to continue checking. Thankfully I had already ordered this gear weeks ago and it was scheduled to be delivered within the next day or two. Customer agreed to bring the truck back once my oscilloscope kit arrived. It came in and I got it set up so he dropped the truck off again. Hooked up the scope kit and verified the signal drop on the circuit. I spent the next 4 hours tracing circuits and watching voltages dance all over the screen. I tested both his old pedal and the replacement. Each turned out to have a similar failure on the same circuit! I ordered an aftermarket assembly to test against the other two and itâs been rock solid. This is perhaps one of the most frustrating parts of the job. When you get electrical parts, or any part for that matter, that fails to fix a problem because it has the exact same failure as the first one it humbles you REALLY quick and makes you question yourself to an unhealthy level. So much time wasted because of a faulty part!