Most mobile mechanics will not touch a box truck. Big Tee does — and has been doing it since 1997. Cars and pickups through commercial fleets. Diagnosed properly. Repaired once. Back on the road.
Three tracks. Same standard. Big Tee runs the same diagnostic discipline on a Camry as on a Freightliner — because business owners and daily drivers both deserve a repair that holds.
Sedans, wagons, crossovers, daily drivers. Every make. Every year. Diagnosed properly the first time — no replacing parts and hoping.
Half-tons, three-quarter tons, dual-rear-wheel, cargo vans, work vans. The trucks that put food on the table — kept running.
Where every other mobile guy walks away — Big Tee gets to work. Box trucks, day cabs, sleepers, full commercial fleets. This is the moat.
From a single check-engine light to a full transmission swap on a delivery van — Big Tee runs the same playbook. Diagnose. Estimate in writing. Repair right.
Parts-cannon repair is what makes commercial vehicle bills balloon. Big Tee runs the diagnosis before any wrench turns — so you pay for the actual cause, not three guesses.
What it does, when it does it, what changed. The story matters before the scan.
OBD-II, manufacturer-specific, and commercial-grade scan tools for trucks and semis.
Codes point. They do not prove. We verify with scope, multimeter, and live data.
You see the cause, the fix, the parts, and the price before any wrench turns.
Repair completed, codes cleared, road-tested, and verified before keys go back.
Your vehicles are your business. When they are down, you are losing money. Big Tee shows up at your lot, diagnoses the actual problem, gives you a written estimate, and turns wrenches the same day when the parts allow.
A van sitting is a route not run. We schedule fast and finish faster.
One mechanic. Your yard. Multiple vehicles knocked out in a single visit.
No parts-cannon billing. Every commercial job starts with a real diagnosis.
Quarterly check-ins, route-priority service, and dedicated estimating for fleets.
Pick whichever fits the vehicle and the job. Most commercial work happens at your lot. Heavy powertrain work — engine and transmission swaps — lands in the shop.
Big Tee rolls to your driveway, jobsite, fleet yard, or commercial lot. Full diagnostic scanners, fluid service, brake work, suspension, AC, and most repairs short of a swap — all completed on-site.
Decatur shop for jobs that need a lift, hoist, and bench space. Engine swaps, transmission swaps, full powertrain work, and any commercial job that benefits from a controlled environment.
Six reasons Big Tee gets the call when the vehicle matters — whether it is a single daily driver or a yard full of work trucks.
Most mobile guys top out at a pickup. Big Tee starts there and goes up.
No tow bill. No driver downtime hauling a vehicle across town. We come to you.
No parts-cannon. Every job starts with a real diagnosis and a written cause.
Since 1997. Carbureted to common-rail diesel. Old iron to modern fleet vans.
When the repair bill exceeds the swap, Big Tee handles the full powertrain.
Built for business owners. Itemized parts, labor, ETA, and contingencies.
"Three of my vans were sitting. I called shops, all of them booked two weeks out. Big Tee showed up at our yard the next morning. By Friday we were back on routes."
"My 24-foot box truck threw a code right before peak season. Big Tee diagnosed a fuel pressure issue another shop wanted to throw $4,200 in parts at. He fixed it for a fraction. Real diagnostics."
"He pulled the transmission out of a 2008 Silverado that we use for crew runs and swapped in a rebuilt unit on-site. Saved us a week of downtime. Honest estimate, honest job."
Primary service zone is Decatur and inner DeKalb County. Mobile service extends across metro Atlanta — including fleet yards and commercial lots. Outside the zone? Call. We figure it out.
Yes — box trucks from 14-foot up through 26-foot are core work for Big Tee. Diagnostics, brakes, suspension, electrical, AC, engine, and transmission. We have the tools and the lift capacity for commercial-class vehicles.
Yes. Mobile service to your yard, lot, or jobsite is a daily routine. Multi-vehicle visits get scheduled so we knock out the fleet in one trip instead of chasing each truck to a shop.
Yes. Day cabs and sleepers — diagnostics, electrical, air systems, suspension, drivetrain, and engine work. Big Tee has been on heavy-duty trucks since the late 1990s. Most mobile mechanics will not touch this class of vehicle.
Older work trucks are a specialty, not an obstacle. Carbureted, mechanical injection, early electronic — Big Tee has seen the full evolution. When swapping is smarter than chasing failures, we will say so.
Inspection first. Compression, leak-down, transmission pressure tests, road condition assessment. Then a written swap estimate covering remanufactured vs. used unit options, parts, labor, fluids, and an honest timeline. Most swaps complete in 3 to 7 working days.
Written, itemized, and built for a business owner to act on. Parts, labor, taxes, ETA, and contingencies. For fleet accounts we set per-visit caps and call before exceeding them. No surprise invoices.
One call. Mobile or shop. Cars through semis. Big Tee picks up.