GM 4L80E & 4L60E
The workhorse automatics behind decades of Chevy and GMC trucks, vans, and SUVs. We keep the wear points and updates for both close at hand.
Rebuilt Here · Never Outsourced · Since 1995
Told your transmission is done? Before anyone orders a replacement, get the full picture. Since 1995 we've torn down, inspected, and rebuilt transmissions on our own bench in Denton — replacing what's worn, updating the parts the factory got wrong, and road-testing every unit before it goes home. ASE-certified techs, ATRA member shop, free towing up to 40 miles on major transmission repair.
Prefer to talk now? Call (940) 514-8690
The Decision
When a transmission fails you have three ways forward, and the right one depends on your vehicle, its miles, and your plans for it. Here's the comparison we'd want if it were our truck.
| Our specialty In-house rebuild Your unit, restored here | Replacement unit New or remanufactured exchange | Used transmission Pulled from a salvage vehicle | |
|---|---|---|---|
| What you get | Your own transmission, torn down and built back with new wear parts and updated components | A unit built somewhere else, swapped in as an exchange | Another vehicle's unit, sold as-pulled with unknown miles |
| Who saw inside it | The same local techs who install it and stand behind it | A factory line — nobody here has opened it | Nobody — its history is a guess |
| Relative cost | $$ — usually below a new or reman swap | $$$ — typically the highest ticket | $ — cheapest up front, riskiest after |
| Time in shop | A few business days once approved | Depends on freight and availability | Fast if one's nearby — and if it holds |
| Warranty | Solid warranty, honored right here in the shop | Manufacturer terms — claims go through the supplier | Often short and parts-only; the labor's on you twice |
| Makes sense when | The core is sound — true for most vehicles | The case or core is damaged beyond rebuilding | An aging vehicle you only need to keep moving |
Every option has its moment. We'll give you an honest recommendation — and a written estimate — before you commit a dollar to any of them. And when a smaller repair solves it, that's what we'll tell you.
Second Opinions Welcome
A second look costs you nothing, and on a job this size it can change everything. We'll scan it, road-test it, and tell you whether you're truly looking at a rebuild — or a solenoid, valve body, or torque-converter repair at a fraction of the cost. Either way, you leave with the real answer in writing.
Get a Second OpinionWhat a Real Rebuild Includes
The word gets used loosely. On our bench it means a full teardown and a documented process — every step, every unit, since 1995.
We scan, check the fluid, and road-test first. If a solenoid, valve body, or converter is the real problem, a smaller repair is the answer — and we say so.
You see the scope and the number, and you approve both before the unit comes out. Nothing proceeds on a verbal maybe.
Every clutch, gear, and passage laid out on a clean bench. This is where the truth about your transmission comes out — measured, not guessed at.
Clutches, bands, seals, and gaskets are replaced outright. Drums, planetaries, pumps, and shafts are checked against spec and replaced only where worn.
Where a factory design has a documented weakness, we build the fix in — updated components so the same failure doesn't come back.
The rebuilt unit goes back in with the converter and cooler addressed and the correct fluid, then gets a real road test. Then we back it in writing.
Down to the Component
A transmission holds hundreds of parts, but rebuild pricing comes down to four families of them. Knowing which is which is how you tell a fair estimate from a padded one.
Friction clutches, bands, seals, gaskets, and the filter. These are the wear items; they never go back in used.
Drums, planetary gearsets, shafts, and the pump. Replaced only when they're actually out of spec — a big reason a rebuild often costs less than a whole unit.
Factory weak spots get the corrected part, not a copy of the one that failed.
Checked and replaced or matched to the rebuild — sending a fresh unit out behind a worn converter is how comebacks happen.
Units We Rebuild
North Texas runs on trucks, and truck transmissions are our daily work. Don't know your unit code? No problem — your year, make, and model tells us everything, foreign or domestic, gas or diesel.
The workhorse automatics behind decades of Chevy and GMC trucks, vans, and SUVs. We keep the wear points and updates for both close at hand.
The six-speed behind the 6.7L Cummins. Towing works these units hard, and we rebuild them with the updated parts that kind of duty demands.
The late-model six-speeds in Silverado, Sierra, Tahoe, and their siblings — rebuilt and road-tested back to shifting the way they should.
The gas-truck six-speeds in Ram pickups. Familiar failure patterns, familiar fixes — handled start to finish in-house.
Allison-series and other heavy-duty units for work trucks, box trucks, and RVs — the big jobs many shops send away, done here.
CVTs fail differently and rebuild differently — belt-and-pulley wear, valve bodies, and when a rebuild beats a replacement. They get their own page.
See the Nissan CVT pageMake Sure It's the Right Page
Before you price one, be sure your symptom actually calls for it. Two minutes here can keep you from paying for more repair than you need.
Slipping, shudder, or limp mode can trace to a solenoid, valve body, or converter — repairs that cost a fraction of a rebuild. Start with the symptom guide on our main transmission page.
Transmission Repair & DiagnosisA howl that rises with road speed, or a clunk in turns, is usually the differential rather than the transmission. That's its own diagnosis — and its own page.
Differential RepairSnap Finance and Synchrony Car Care offer 6-month promotional financing on approved credit, so a needed rebuild doesn't have to wait on payday.
Financing Options
Why In-House Matters
Plenty of shops sell "rebuilds" that ship your unit — or your whole job — somewhere else. Ours never leaves the building. The ASE-certified techs who tear your transmission down are the same ones who rebuild it, install it, and road-test it: an ATRA member shop with over 50 years of combined experience.
What It Costs
No two rebuilds cost the same, and a number quoted blind over the phone is a guess. These are the levers that actually move a rebuild estimate — and yours goes in writing before any work begins.
Vehicle & unit type
A heavy-duty diesel unit carries more parts and more labor than a light-duty automatic — the single biggest swing.
What the teardown finds
Soft parts alone sit at the low end; worn hard parts — drums, planetaries, a pump — add real cost. The bench inspection sets the true scope.
Torque converter & cooler condition
A failing converter or a debris-filled cooler has to be addressed, or the new build inherits the old problem.
Updated components
Correcting a known factory weakness adds parts cost up front and subtracts a second failure later.
4WD & transfer-case pairing
Four-wheel-drive hardware adds steps at removal and reinstallation.
Diagnosis first, then a written estimate you approve before teardown. If the inspection changes the scope, you hear it from us before anything proceeds — never on the final bill.
Built-In Protection
A rebuild is one of the biggest tickets in auto repair. These come standard with ours.
Free local towing up to 40 miles with major transmission repair — a dead transmission shouldn't cost you a tow on top.
Every rebuild leaves with a solid warranty, and we honor eligible extended warranties too.
The scope and the number on paper, approved by you, before teardown begins.
Snap Finance and Synchrony Car Care — 6-month promotional financing on approved credit.
Transmissions on daily drivers, work trucks, and RVs — and the same notes keep coming back: the job got done, torque-converter work handled right, warranties honored without a fight, and fair prices where padding would have been easy. Three decades of that is the reputation a rebuild deserves.
Rebuild Questions
It depends on the unit, what the teardown inspection finds, and whether hard parts are involved — which is why we won't guess a number over the phone. You get a free written estimate after diagnosis, you approve it before teardown, and if the inspection changes the scope you hear about it before we proceed.
A remanufactured unit is built in a factory somewhere else and swapped in as an exchange — you give up your original transmission. A rebuild restores your own unit, here on our bench: we replace what's actually worn and update known weak points. You keep your transmission, and the warranty is honored where the work was done.
Most rebuilds take a few business days once you've approved the estimate. You get a realistic timeline up front and updates along the way.
Built back to factory spec with new wear parts — and updated where the original design was weak — a rebuilt unit is made to serve the way the transmission did when it was new. Regular fluid service is what protects that investment over the years.
Occasionally — for an aging vehicle you only need to keep moving, a sound used unit can make sense, and we'll tell you when it does. The tradeoffs are real, though: unknown history, often a short parts-only warranty, and the same installation labor either way. If it fails, you pay that labor twice.
Yes — heavy-duty diesel units like the Ram 68RFE and Allison-series transmissions for work trucks, box trucks, and RVs are regular jobs in our shop.
Yes — free local towing up to 40 miles with major transmission repair. If you're broken down, call first and we'll help get the vehicle in.
Yes — 6-month promotional financing through Snap Finance and Synchrony Car Care, on approved credit. It's third-party financing, and the full details are on our financing page.
Denton, TX · Since 1995
One call gets you a plain-English diagnosis, a free written estimate, and a rebuild done on our own bench — warranty-backed, with free 40-mile towing and financing when you need it. Serving Denton, Lewisville, Flower Mound and nearby.