Your Transmission, Rebuilt to Last — Transmission Repair in Houston, TX
Maddox is a Houston transmission specialist — 22 years, transmissions only. Honest diagnostics, expert rebuilds, and a 3-year/36,000-mile warranty that means you fix it once.
What We Do
Transmissions are all we do — repair, rebuild, or replace, done right the first time.

Twenty-Two Years, One Thing Done Right
Most shops treat transmission work as a sideline — a job they take on between brakes and oil changes, and it shows. Maddox does one thing: transmissions. For twenty-two years, that's all we've built, rebuilt, diagnosed, and warrantied, and that focus is exactly why drivers across Houston trust us with the single most expensive repair a car can need. It means we've seen your problem before — the specific way your model fails, the fix that actually lasts, and the difference between a $200 solenoid and a $3,000 rebuild (we'll always tell you which one it really is). It means our diagnostics are honest and our estimates are written down before we touch anything, so you're never surprised. And it means we can stand behind our rebuilds with a real 3-year/36,000-mile warranty, because we're confident in work we do every single day. A transmission is not the place to gamble on the cheapest quote or the busiest general shop. Bring it to the people who do only this, and do it right the first time.
- ✓Transmissions only — 22 years of focus
- ✓Honest diagnostics, written estimates first
- ✓Quality parts, not the cheapest available
- ✓3-year / 36,000-mile warranty on rebuilds
Repairs You Can Actually Trust
The difference a specialist makes.
Real Diagnostics
We find the actual cause — not a guess — so you pay to fix the problem, not to replace parts that were fine.
Written Estimate First
A clear, itemized estimate before any work begins. You approve the price before we start.
3-Year / 36k Warranty
Every rebuild is backed nationwide — real coverage, honored without an argument.
Quality Parts
OE-grade and premium components built to last, never the cheapest part that fails again in a year.
Fast Turnaround
Most rebuilds done in 2–3 days, because downtime costs you — and we do this every day.
Honest Advice
If a repair costs more than the car is worth, we'll tell you. We'd rather earn your trust than your last dollar.
Why Drivers Choose a Specialist
Three reasons Houston brings its transmissions here.
We Diagnose Honestly
Two shops say rebuild; we often find a $200 fix. A specialist knows the difference — and tells you the truth.
We Fix It Once
Quality parts, expert work, and a 3-year warranty mean the repair lasts. No return trips, no second bills.
We Only Do This
22 years, transmissions only. When someone does one thing all day, every day, the work is simply better.

A 3-Year Promise, Not Fine Print
Anyone can quote you a low price; standing behind the work is what separates a real transmission shop from a cheap one. Every transmission Maddox rebuilds is backed by a 3-year/36,000-mile nationwide warranty — coverage you can actually use, honored without a fight, and good even if you're broken down three states away on a road trip. We can offer that because we're not gambling: we use quality parts, our technicians rebuild transmissions every single day, and we test every unit before it leaves the shop. When a shop's warranty is real, it tells you they expect the repair to last — and ours is as real as it gets. That promise is the whole point of choosing a specialist. You bring us the most expensive repair your car will ever need, and we make sure you only pay for it once. No asterisks, no runaround, no 'sorry, that's not covered.' Just a transmission that shifts right and a warranty that means what it says.
- ✓3-year / 36,000-mile nationwide coverage
- ✓Honored without a fight, anywhere in the US
- ✓Every rebuild road-tested before pickup
- ✓Quality parts that don't fail twice
Real Work, Real Results
A look inside a shop that does transmissions all day, every day.






Drivers Who Trust Us
Two other shops told me I needed a full rebuild. Maddox diagnosed it as a solenoid and a fluid service, fixed it for a fraction of the quote, and my truck has shifted perfectly for two years since. They could have taken me for thousands and didn't. That's the whole reason I'll never take a vehicle anywhere else — these people are honest, they specialize in exactly one thing, and they are very good at it.
My daughter's Civic dropped its transmission the week before she left for college. Maddox got a rebuild done in three days, stood behind it with a real warranty, and even checked it again before the drive with zero charge. The car made it to Austin and back all year without a hiccup. Fair price, straight answers, and they treated us like family. A rare kind of shop.
As a contractor I can't afford downtime, so when my work van's transmission started slipping I needed it done fast and done right. Maddox had me diagnosed the same morning, rebuilt within 48 hours, and the warranty means I'm not worrying about it again. Their whole shop is transmissions — you can tell the difference when someone does one thing all day, every day. Worth every penny.
Transmission Questions, Answered
Do I really need a rebuild, or is it something smaller?
Often it's something smaller — and that's exactly why a specialist matters. Many transmission problems that general shops quote as full rebuilds turn out to be a failed solenoid, a sensor, low or burnt fluid, or a simple external leak. Because transmissions are all we do, we diagnose the real cause first and tell you honestly what it needs, whether that's a $200 repair or a full rebuild. You'll get a clear written estimate before any work begins, and we'll never sell you a rebuild you don't need. If a smaller fix will solve it and last, that's what we'll recommend — earning your trust is worth far more to us than one oversized invoice.
What does your warranty actually cover?
Our rebuilds come with a 3-year/36,000-mile nationwide warranty — and we mean nationwide. If something covered fails, it's honored at qualified shops across the country, so you're protected even if you break down far from Houston on a road trip. The coverage is real and honored without a runaround; we can offer it because we use quality parts, rebuild transmissions every day, and road-test every unit before it leaves our shop. We'll walk you through exactly what's covered in writing when you pick up your vehicle, so there are no surprises. A warranty is only as good as the shop that stands behind it, and standing behind our work is the whole point of being a specialist.
How long will my repair take?
Most repairs and rebuilds are completed in two to three business days, and simpler repairs like a solenoid, sensor, or fluid service are often same-day. Because transmissions are our only focus, we're efficient — we're not fitting your job between brakes and oil changes, and we stock the parts we use most. Once we've diagnosed the problem and you've approved the written estimate, we'll give you a firm timeline, and if we're waiting on a specific part we'll tell you up front. We know a vehicle down is a real hardship, especially for work trucks and family cars, so we move quickly without ever cutting corners on quality.
Do you work on both automatic and manual transmissions?
Yes — we service and rebuild automatic transmissions (including modern CVT and dual-clutch units) and repair manual transmissions and clutches. From daily drivers and work trucks to older vehicles, if it shifts, we work on it. Manual clutch replacement, hydraulic clutch repair, and manual gearbox rebuilds are all in our wheelhouse alongside automatics. Whatever you drive, bring it in and we'll diagnose it honestly and give you a written estimate. Twenty-two years of doing only transmissions means we've seen just about every make, model, and failure — and we know the fix that actually lasts for yours.
Can I get a free estimate, and do you offer towing?
Yes to both. Diagnosis and estimates are free, and you'll always get an itemized written estimate to approve before we begin any work — you're never charged for a repair you didn't authorize. If your vehicle isn't safe or drivable, we can arrange towing to our East End shop; just give us a call and we'll help coordinate it. The best first step is simply to reach out with your vehicle's year, make, model, and what it's doing — slipping, hard shifts, a leak, a warning light — and we'll tell you what we think it needs and get you scheduled. Straight answers and a fair price, every time.
Fix it once. Fix it right.
Tell us your vehicle and what it's doing, and we'll give you an honest diagnosis and a free written estimate — backed by a 3-year warranty.
Get a Free Estimate
Tell us your vehicle and the problem, and we'll get back to you the same business day.
- Visit us4820 Navigation Blvd, Houston, TX 77011
- Call us(713) 555-0148
- Email usservice@maddoxtrans.com