Alpharetta, GA · Same-Day Diagnostics
Engine overhaul, ECM diagnostics, transmission rebuild. ASE certified technicians. We call you back within the hour.
What We Fix
From engine rebuilds to oil changes — all work done in-house, fair pricing, documented in Fullbay.
Full teardown, inspection, and rebuild. Pistons, rings, bearings, head gaskets — pressure tested before reassembly. D13, ISX, X15 and more.
Manual, automatic, and AMT repair. Clutch packs, torque converters, shift forks — diagnosed and rebuilt in-house.
Full ECM programming and diagnostics using Infomax and brand-specific software. Fault codes, DPF/EGR resets, sensor calibration.
Air brake inspection, S-cam, slack adjusters, drums, shoes, and ABS system service. Full DOT compliant documentation.
Full AC diagnosis, recharge, compressor replacement using Robinair equipment. Cab & sleeper. Keep your driver comfortable year-round.
Oil & filter, brake adjustments, valve lash, coolant flush, belt inspection. Full Fullbay documentation — keep your DOT records clean.
Don't need a full overhaul? We handle everyday truck work too — tire swaps, light replacements, battery service, belts & hoses, fluid top-ups, minor electrical. Fair pricing, no upsells. If your truck needs it, we do it.
Specialized In
We don't work on everything. We go deep on the four platforms that run America's flatbed and long-haul freight.
D11 · D12 · D13 · D16
Detroit DD13 · DD15 · DD16
Cummins ISX · X12 · X15
Paccar MX-11 · MX-13
Customer Reviews
Real feedback from carriers and owner-operators who've trusted us with their trucks.
"Brought in my Volvo with a D13 knocking. They diagnosed it same day, gave me a straight quote, and had it back in three days. No upsells, no run-around. Will come back."
"Our Freightliner had a DPF issue three other shops couldn't fix. Garant ran full Infomax diagnostics, reset the system — been clean for 40k miles since. Solid team."
"Quick callback, fair pricing, good diagnostics. Using them for preventive maintenance on three Kenworths now. Location is easy — big rig access, no issues getting in."
Call us immediately — we prioritize breakdowns and return calls within the hour.
Get In Touch
Fill the form and we'll call you back within 1 hour. Or call directly — we pick up.
We'll call you back within 1 hour during business hours.