Transmission Repair & Service
The team at SM Transmissions has more than 30 years of experience providing expert transmission repair in Irving, TX and across the Dallas-Fort Worth Metroplex. Free diagnostics, free towing with any repair, and warranties up to an unlimited-mileage lifetime warranty on labor.
Transmission Diagnostics in Irving: Find the Real Problem First
Our transmission mechanics use current diagnostic equipment to pinpoint trouble quickly and accurately. A proper transmission diagnostic starts with a computer scan for stored codes, then a fluid inspection, a line-pressure test and a road test, because a code alone rarely tells the whole story. Many “failed transmission” quotes we see from other shops turn out to be a solenoid, a leaking pan gasket, a bad sensor or low fluid.
The diagnostic is free. You get a plain-English explanation of what we found, a written estimate, and the choice between a targeted repair, a fluid service or a full transmission rebuild. No work starts until you approve it.
Signs Your Transmission Needs Repair
If you notice any of these, stop driving on it if you can. Continued driving on a slipping or leaking transmission turns a repair into a rebuild. Call (214) 854-1901 and we will arrange free towing to our Irving shop.
- Slipping: the engine revs but the car does not pick up speed, or RPM flares between gears.
- Delayed or harsh shifting: a pause before the car moves from Park or Reverse, or a clunk into gear.
- Transmission fluid leak: red or brown fluid under the car where you park.
- Burning smell or dark fluid: a sign the transmission is overheating.
- Grinding, whining or humming that changes with vehicle speed.
- Check engine or transmission warning light, or the vehicle going into limp mode.
- Shudder at low speed, common on CVT-equipped Nissan, Honda and Subaru models.
Automatic Transmission Repair
The mechanics at SM have decades of experience in automatic transmission repair for Asian, European and domestic vehicles. Common automatic transmission problems include delayed shifting, a transmission fluid leak, erratic or hard shifting, grinding noises during a shift, or the inability to move the gear selector into Drive or Reverse. Many of these are fixable without a rebuild: solenoid packs, valve body work, torque converter replacement, seals and gaskets, cooler lines and sensors. If the internal clutches or hard parts are worn, we will tell you, and we can rebuild the unit in-house instead of quoting a dealership replacement.
Manual Transmission & Clutch Repair
If you drive a manual, we have you covered. Our Irving transmission shop services all makes and models of manual-transmission cars and trucks. We restore drivability when a vehicle has difficulty shifting, grinds into gear, pops out of gear, or has a clutch that slips, chatters or will not release. Clutch and flywheel replacement, synchronizer repair, shift linkage, input and output bearings and seals are all handled here.
CVT Transmission Repair
SM Transmissions is a CVT specialist. Continuously variable transmissions from Nissan (Jatco), Honda, Toyota, Subaru and Mitsubishi behave differently from a conventional automatic and need a shop that works on them every week. We diagnose, repair and rebuild CVTs in-house. Read more on our dedicated CVT transmission repair page, or call to schedule CVT diagnostics.
Transmission Fluid Leak Repair
A transmission fluid leak can be detrimental to any vehicle. If you spot a puddle of reddish fluid under your car, it is most likely transmission fluid. Common leak points are the pan gasket, axle seals, the front pump seal, cooler lines and the dipstick tube seal. Putting off leak repair lets the fluid level drop, which causes slipping, delayed shifts, a burning smell and eventually internal damage. At the first sign of a drip, contact SM Transmissions for transmission fluid leak repair in Irving. Most leak repairs are done the same day.
Solenoid, Valve Body & Torque Converter Repair
Not every transmission fault is a rebuild. Shift solenoids, pressure-control solenoids, valve bodies and torque converters fail on their own and can be replaced individually when the rest of the unit checks out. We test these components before recommending anything larger, and we tell you exactly what the diagnostic showed.
Domestic, Asian & European Transmission Repair
We service all current and defunct American brands including Ford, Lincoln, Mercury, Chevrolet, GMC, Buick, Cadillac, Oldsmobile, Hummer, Pontiac, Chrysler, Jeep, Dodge, RAM and Plymouth. We also repair Asian makes such as Toyota, Lexus, Honda, Acura, Nissan, Infiniti, Hyundai, Kia, Subaru, Mazda and Mitsubishi, and European makes including BMW, Mercedes-Benz, Audi, Volkswagen, Volvo and Mini. Automatic, manual, CVT and dual-clutch (DCT) units are all handled at our Irving shop.
How Much Does Transmission Repair Cost in Irving?
Transmission repair cost depends on what the diagnostic finds. A pan gasket, seal or solenoid repair is a fraction of the cost of a rebuild. When a rebuild is the right call, our in-house rebuilds start at $1,795 including parts, labor and installation, with the final price depending on the transmission type. You get a written estimate before any work begins, no hidden costs, and we work directly with extended warranty and insurance companies. Learn more on our transmission rebuild cost page or call (214) 854-1901 for a quote.
Free diagnostic. Written estimate. No surprises.
Most transmission problems do not need a rebuild. We test first, then quote the repair the diagnostic actually calls for. In-house rebuilds from $1,795 when one is needed.
- Computer scan, fluid check, pressure and road test
- Free towing in DFW with repair
- Warranties up to unlimited-mileage lifetime on labor
- Se habla español
How a repair visit works
Free diagnostic
Scan, fluid inspection, pressure test and road test. You get the findings in plain English.
Written estimate
Repair, fluid service or rebuild, with the price and warranty on paper before we start.
The work
Done in our Irving shop by the same technician who diagnosed it. We call with updates.
Road test and pickup
Every repair is road tested before you get the keys. Free towing means you never had to drive it in.
Transmission Repair FAQs
The questions Irving drivers ask us most before booking a repair.
How much does transmission repair cost?
It depends on the cause. Minor repairs such as a pan gasket, seal, sensor or solenoid cost far less than a rebuild. In-house rebuilds at SM Transmissions start at $1,795 including parts, labor and installation. Diagnostics are free and you get a written estimate before we start.
Can a transmission be repaired without rebuilding it?
Often, yes. Leaks, solenoids, valve bodies, torque converters, sensors and cooler lines can all be repaired or replaced individually. We only recommend a rebuild when the diagnostic shows worn internal clutches, bands or hard parts.
Do you offer free transmission diagnostics?
Yes. The diagnostic at our Irving shop is free. It includes a computer scan, fluid inspection, pressure test and road test, and you receive a written estimate with no obligation.
What are the first signs of transmission problems?
Slipping or RPM flare, delayed engagement when shifting from Park, harsh or erratic shifts, a red fluid leak, a burning smell, grinding or whining noises, and a check engine or transmission warning light. A low-speed shudder is a common early CVT symptom.
Is it safe to drive with a slipping transmission?
No. Slipping means the clutches are not fully engaging, which generates heat and accelerates wear. Continuing to drive usually turns a repairable problem into a full rebuild. We offer free towing across the Metroplex with any transmission repair.
Do you repair CVT and dual-clutch transmissions?
Yes. SM Transmissions specializes in CVT repair and rebuilding for Nissan, Honda, Toyota, Subaru and Mitsubishi, and we also service dual-clutch (DCT) transmissions.
What warranty comes with transmission repair?
Warranties vary by the job performed, up to an unlimited-mileage lifetime warranty on labor. We will explain the warranty terms for your specific repair on the written estimate.
Do you offer towing?
Yes. Towing is free anywhere in the Dallas-Fort Worth Metroplex when we perform the transmission repair.
More transmission services
- Transmission Rebuild: in-house rebuilds from $1,795
- Automatic Transmission Repair: solenoids, valve bodies, converters
- Manual Transmission & Clutch Repair: clutches, synchros, gearboxes
- CVT Transmission Repair: Nissan, Honda, Toyota, Subaru, Mitsubishi
- Transmission Maintenance: fluid changes, flushes and filters