01 · Service group
Electrical Systems
Electrical faults are where fleets lose the most time, because the symptom and the cause are rarely in the same place. We trace circuits, read live module data and test under load before anything is replaced, so the repair is the one the truck actually needed. When a controller itself needs an update or a replacement flash, we program ECM, MCM, ACM and CPC modules to their required operating condition.
Electrical systems repair
Charging, starting, grounds and harness work
Alternators, starters, battery banks, cables, grounds, connectors and damaged harness sections. We repair the circuit rather than swapping the nearest component, and we test the result under load before the unit goes back into service.
Request this serviceComputer diagnostics
Live data, module and network testing
Full scan across engine, aftertreatment, transmission, brake and body controllers. We read live data and freeze-frame rather than a code list, and we check the J1939 network itself when modules stop reporting.
Request this serviceECM programming
Engine control module flash, calibration and parameters
Factory-authorized engine control module calibration updates, replacement ECM programming after a module swap, and customer parameter configuration such as road speed, idle shutdown and PTO settings. All programming is performed in compliance with applicable U.S. law; we do not perform emissions defeat work.
Request this serviceMCM programming
Motor control module flash and replacement setup
Motor control module calibration updates and replacement MCM flashing after a module swap, including injector-control parameters on Detroit-platform engines. The work restores the engine to its required operating condition. All programming is performed in compliance with applicable U.S. law; we do not perform emissions defeat work.
Request this serviceACM programming
Aftertreatment module calibration and replacement flash
Aftertreatment control module programming covering regen, DEF dosing, NOx and DPF-related parameters, plus replacement ACM setup after a module swap. The goal is a working emissions system that stays in regen and out of derate. All programming is performed in compliance with applicable U.S. law; we do not perform emissions defeat work.
Request this serviceCPC programming
Common powertrain controller parameters and replacement flash
Common powertrain controller programming on Freightliner and related chassis — replacement CPC setup, customer parameters such as road speed, idle shutdown and PTO, and powertrain-interface configuration. All programming is performed in compliance with applicable U.S. law; we do not perform emissions defeat work.
Request this serviceElectrical diagnostics
No-power, shorts, parasitic draw and grounds
Voltage-drop testing, parasitic draw isolation, short and open location, and intermittent fault tracing. This is the work that resolves the trucks that have already been to two other shops.
Request this serviceStarting and charging systems
Batteries, starters, alternators tested under load
Load testing of the whole starting and charging circuit, not just the battery. We identify whether a repeat no-start is a battery, a cable, a ground, a starter or a draw somewhere else in the vehicle.
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Other service groups
02
Engine & Aftertreatment
Diagnosis and repair across the engine, fuel, air, cooling and emissions systems.
03
Truck, Trailer & Reefer
Tractor, trailer and refrigeration work so the unit and the load stay legal.
04
Fleet Care
Scheduled maintenance that happens at your yard, on your schedule.
05
On-Site & Emergency
We come to the truck. Roadside, jobsite or yard, around the clock.
Electrical systems
Electrical Systems — on site, across Metro ATL
Tell us the unit, the engine family and what it is doing. We will tell you what we think it is and what it will take to put it right.
Mobile service 24/7 · Atlanta / Metro ATL