Houston, TX · Heavy-Duty Diesel Truck Repair

Heavy-Duty Diesel, Done Right.

"Cualquier trabajo en tu camión, nosotros te lo hacemos."

Engine rebuilds, repairs & diagnostics — Houston's trusted diesel shop for owner-operators and fleets. Honest work, fast turnaround, and doors open by 7 AM.

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7 AMOpen Mon–Sat

RebuildsOur specialty

EspañolSe habla

Our work

Torn down, built back better.

Real diesel work off our shop floor — rebuilds, valve trains, cylinder heads and the internals that keep Houston's trucks rolling.

Freshly rebuilt diesel long block on a pallet in the shop yard — **Fresh Long Block**Rebuilt & ready to drop in

Rebuilt diesel engine block, wide view — **Bottom End, Built Right**Bearings, rings & torque to spec

Close-up of the deck and head surface of a rebuilt diesel block — **Deck & Head Detail**Sealed clean, no shortcuts

Cylinder head rocker arms and valve springs during a rebuild — **Valve Train Work**Rockers & springs set tight

What we do

Any job on your truck.

From a full engine overhaul to an electrical fault nobody else can find — if it's got a diesel in it, we fix it. Owner-operators and fleets across Houston.

Engine Rebuilds & Overhauls

In-frame and out-of-frame rebuilds done to spec — bearings, rings, injectors, heads and turbos. We tear it down, measure everything, and build it back to run for the long haul.

General Truck Repair

Brakes, clutches, drivetrain, cooling, air systems and everything in between. One shop for the whole truck — no runaround, no upselling parts you don't need.

Diagnostics & Electrical

Check-engine light, sensor faults, no-starts and wiring gremlins. We plug in, read the codes and actually find the cause — not just clear the light and hope.

Preventive Maintenance / DOT

Scheduled PM service, oil and filters, and DOT inspection prep to keep you legal and on the road. Catch the small stuff before it strands you.

The shop

The man behind the wrench.

General Diesel Mechanic is run by a hands-on master diesel mechanic who'd rather be under the hood than behind a desk. No service writers, no runaround. You talk to the guy actually turning the wrenches on your truck.

Master diesel expertise

Years deep on heavy-duty engines — rebuilds, diagnostics and the hard jobs other shops pass on.

Honest work, straight answers

You get told what the truck actually needs — and what it doesn't. That's how owner-operators keep coming back.

On the road by 7 AM

Early starts, fast turnaround. Downtime costs you money, so we don't waste it.

Heavy-duty diesel engine work at General Diesel Mechanic

Owner & Master Mechanic General Diesel Mechanic · Houston

"If it's got a diesel in it, we'll make it right. Cualquier trabajo en tu camión, nosotros te lo hacemos."

Who we serve

Built for the working truck.

One rig or a whole yard — we keep Houston's diesel fleet earning. If it hauls, we handle it.

Owner-Operators

Your truck is your business — we treat it that way

Fleets

Keep every unit legal, serviced and rolling

Semis / 18-Wheelers

Long-haul power, kept in tune

Box Trucks

Delivery rigs back on the route fast

Dump Trucks

Heavy loads, heavier maintenance — handled

Heavy Equipment

Off-road diesel & machinery, too

Why us

The shop owner-ops trust.

We're not a chain and we're not guessing. It's diesel done by someone who's rebuilt hundreds of engines and stands behind every job.

Heavy-duty diesel specialists

Rebuilds and overhauls are our bread and butter — not a side job.

DOT & preventive maintenance

Inspections and scheduled service that keep every unit legal and earning.

Honest work, fast turnaround

Straight pricing, real diagnosis, and we don't sit on your truck.

Se habla español

Bilingual service for Houston's trucking community — sin problema.

Truck acting up?

Talk to the mechanic.

Call the shop and you're talking to the person who'll actually work on your truck — no call center, no runaround. Open by 7 AM, Monday to Saturday. Se habla español.

Call 281-989-1597

Free quote · No obligation

Let's get you rolling.

Tell us about the truck and the problem — engine trouble, diagnostics or a full rebuild. We'll get back with a straight answer and a plan.

Hablamos español

281-989-1597 generaldieselmechanicllc@gmail.com 16550 Beaumont Hwy
Houston, TX 77049

Shop Hours

Monday – Saturday · Opens 7:00 AM
Sunday · Closed

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