Dead batteries every morning, phantom warning lights, a harness rubbed through behind the cab — electrical faults are the hardest to find and the easiest to misdiagnose. We trace them with meters and wiring diagrams, not parts cannon.
If a truck eats batteries, something is draining them while it sits — a sleeper accessory, a stuck relay, a module that won't sleep, or a chafed wire finding ground. Replacing the batteries again changes nothing. Parasitic draw testing measures exactly how much current flows with everything off, then isolates circuit by circuit until the culprit is found. It's methodical work, and it's the only way that actually ends the problem.
In Gulf Coast humidity and road salt season, corroded grounds cause a bizarre range of symptoms — dim lights, erratic gauges, false sensor codes, intermittent no-starts — that send other shops chasing expensive components. A significant share of our 'complex electrical' repairs end at a $0 ground strap, cleaned and re-terminated properly. We check grounds first because experience says to.
Lighting defects are among the most-cited violations at Alabama scales, and the cheapest to prevent. We repair headlight, marker and trailer circuits roadside and in-shop, and our fleet PMs include a full lighting walk-around so your drivers stop collecting fix-it tickets.
“My Freightliner started stalling right after fueling up. Other mechanics said the fuel pump was dead and didn't even have one in stock. These guys arrived in about 40 minutes, hooked up the computer and found it was just a failed crankshaft sensor. They noticed oil inside the connector, cleaned everything out, swapped the sensor — and the truck fired right up! A huge thanks to the team!”
“Totally recommend. Thanks for your help — great price.”
“Timely manner to replace my truck batteries... and now I'm on my way.”
Call now for 24/7 mobile service or book your in-shop appointment at our Mobile, AL location.