Transmission Repair & Rebuild in Rohnert Park & Sonoma County
Rohnert Park Transmission & Auto Repair is an ATRA certified transmission specialist serving Sonoma County since 1997. We diagnose, repair, and rebuild all transmission types including automatic, manual, and CVT transmissions with same-day service available.
Transmission Repair & Diagnostics
Accurate diagnosis is the foundation of every successful transmission repair. At Rohnert Park Transmission, our ATRA certified technicians use advanced computer scanning tools, fluid analysis, and thorough road testing to identify the exact cause of your transmission problem before recommending any repairs. We check for trouble codes, analyze solenoid function, inspect the torque converter, and evaluate valve body operation to provide a complete picture of your transmission's health.
Whether your vehicle is experiencing delayed shifting, harsh engagement, slipping between gears, or a transmission shudder, we have the diagnostic equipment and expertise to pinpoint the problem. Many transmission issues can be resolved with targeted repairs to solenoids, sensors, or wiring rather than a full rebuild, saving you significant time and money.
If your check engine light is on with a transmission-related code like P0700, our team can retrieve the code, diagnose the root cause, and explain your options in plain language.
Transmission Rebuild & Replacement
When a transmission repair is not enough, a full rebuild restores your transmission to like-new condition. Our rebuild process includes complete disassembly, thorough inspection of every component, and replacement of all worn parts including clutch packs, bands, seals, gaskets, and bushings. We inspect the planetary gearsets, sun shell, and drum assemblies for wear and replace anything that does not meet specification.
Every rebuilt transmission receives a new torque converter, fresh fluid, and a clean filter before installation. We road test every vehicle after a rebuild to verify proper shift timing, line pressure, and lockup operation across all driving conditions. Our ATRA membership gives you nationwide warranty coverage on transmission rebuilds, so you are protected wherever you drive.
For vehicles where a rebuild is not the most cost-effective option, we also offer quality remanufactured transmission units. Our technicians help you weigh the rebuild vs. replace decision based on your vehicle's value, condition, and your budget.
CVT Transmission Specialists
Continuously Variable Transmissions require specialized knowledge and equipment that many general repair shops lack. Our technicians are trained and experienced in CVT diagnosis and repair for all major manufacturers including Nissan, Honda, Toyota, and Subaru. We understand the unique operating principles of CVT belt and chain drive systems, variator assemblies, and the specific fluid requirements that keep these transmissions running smoothly.
Common CVT problems include juddering during acceleration, overheating in stop-and-go traffic, belt or chain noise, and loss of power. Many CVT issues can be addressed with a proper fluid exchange using manufacturer-specified CVT fluid before internal damage occurs. When internal repair is needed, we have the diagnostic tools and parts sourcing to handle CVT rebuilds that most shops turn away.
Learn the warning signs that your CVT needs attention and the differences between CVT and automatic transmissions.
Transmission Maintenance Services
Regular transmission maintenance is the most cost-effective way to prevent major transmission failures. Fresh automatic transmission fluid (ATF) provides the lubrication, cooling, and hydraulic pressure your transmission needs to shift smoothly and operate at the correct temperature. Over time, ATF breaks down from heat and friction, losing its protective properties and allowing internal wear to accelerate.
Our transmission maintenance services include fluid drain and fill, complete fluid exchange, filter replacement, pan gasket service, and transmission cooler inspection and service. We use manufacturer-specified fluids for every vehicle and can perform both conventional fluid changes and machine-assisted exchanges depending on what is best for your transmission's condition.
Read our complete guide to transmission fluid to understand when your vehicle is due for service and which fluid type your transmission requires.
Clutch, Flywheel & Drivetrain
Manual transmission vehicles rely on the clutch disc, pressure plate, and throwout bearing to engage and disengage power between the engine and transmission. A worn clutch causes slipping under acceleration, difficulty shifting, chattering on engagement, or a clutch pedal that engages very high or very low in its travel. Our technicians replace clutch assemblies for all makes and models, including performance clutch upgrades for trucks and sports cars.
Flywheel resurfacing or replacement is typically done alongside clutch replacement to ensure a smooth, even engagement surface. We also service the complete drivetrain including transfer cases for 4WD and AWD vehicles, differentials, CV axles, and drive shafts. Proper drivetrain maintenance ensures power is delivered efficiently from engine to wheels.
Whether you drive a daily commuter or a work truck hauling loads through Sonoma County, we keep your drivetrain operating reliably. Our engine repair and electrical diagnostics services complement our transmission work for complete powertrain care.
Transmission Repair Service Areas
We provide expert transmission repair to drivers throughout Sonoma County and the North Bay. Our shop at 305 Laguna Dr in Rohnert Park is centrally located off Highway 101 for easy access from all surrounding cities.
Related Transmission Resources
Transmission Shudder Guide
Causes, diagnosis, and fixes for transmission shudder and vibration during acceleration or at highway speed.
CVT Warning Signs Guide
How to recognize the warning signs that your CVT transmission needs professional attention before it fails.
P0700 Transmission Code Guide
What the P0700 transmission malfunction code means, common causes, and what to do when you see it.
Ford F-150 Transmission Guide
Complete transmission repair and maintenance guide for America's best-selling truck.
Transmission Repair Cost Guide
What to expect for transmission repair and rebuild costs, and how to avoid overpaying.
5 Critical Transmission Warning Signs
The five warning signs every driver should recognize to catch transmission problems early.
Why Choose Rohnert Park Transmission
ATRA Certified
Our Automatic Transmission Rebuilders Association certification means your transmission is serviced by specialists who meet the industry's highest standards.
Family-Owned Since 1997
Nearly three decades serving Rohnert Park and Sonoma County. We treat every customer like a neighbor because you are one.
4.9 Stars, 200+ Reviews
Our customers rate us 4.9 out of 5 because we provide honest assessments, transparent pricing, and quality work that lasts.
Certifications & Affiliations
Frequently Asked Questions About Transmission Repair
How much does a transmission rebuild cost?
Transmission rebuild costs vary based on the vehicle make, model, and the extent of internal damage. A rebuild typically ranges from $1,800 to $3,500 for most passenger vehicles and can be higher for trucks and performance vehicles. Our ATRA certified technicians provide a detailed diagnosis and transparent quote before any work begins. Call (707) 584-7727 for an estimate specific to your vehicle.
What are signs my transmission is failing?
Common signs of transmission failure include delayed or harsh shifting, slipping between gears, grinding or shaking during gear changes, transmission fluid leaks (red or brown fluid under your vehicle), a burning smell from the transmission area, the check engine or transmission warning light, whining or humming noises, and the transmission refusing to engage. Early diagnosis at our Rohnert Park shop can prevent a minor repair from becoming a full rebuild.
How long does a transmission repair take?
Repair times depend on the scope of work. A transmission fluid change takes about an hour. Solenoid or sensor replacement typically takes a day. A full transmission rebuild takes 2 to 5 business days depending on parts availability and complexity. We provide accurate timelines after diagnosis and keep you updated throughout the process.
Do you work on CVT transmissions?
Yes. We are CVT transmission specialists with expertise in Nissan, Honda, Toyota, and Subaru CVT systems. CVTs require specialized fluid, diagnostic procedures, and repair techniques that differ from conventional automatic transmissions. Our ATRA certified technicians have the training and equipment to diagnose and repair CVT juddering, slipping, overheating, and noise issues.
What is the difference between a transmission flush and a fluid change?
A fluid change (drain and fill) replaces approximately 40 to 50 percent of the transmission fluid by draining the pan. A flush uses a machine to push out nearly all old fluid and replace it with new fluid. We generally recommend a drain and fill for regular maintenance. Flushes can sometimes dislodge debris in older transmissions that have not been well maintained, so our technicians advise on the best approach for your vehicle's condition.
How often should I change transmission fluid?
Most manufacturers recommend transmission fluid changes every 30,000 to 60,000 miles for automatic transmissions. Vehicles used for towing, stop-and-go driving, or driving on mountain roads like Highway 12 through Sonoma Valley may need more frequent changes. Regular fluid changes are the single most effective way to extend your transmission's lifespan and avoid costly repairs.
Do you offer a warranty on transmission work?
Yes. We stand behind every transmission repair with comprehensive warranty coverage. As an ATRA member, our transmission repairs carry a nationwide warranty, so you are covered even when traveling. Warranty terms vary by service type. Ask our service advisors for specific coverage details for your repair.
Can you repair my manual transmission?
Absolutely. Our technicians repair manual transmissions for all makes and models, including clutch disc and pressure plate replacement, throwout bearing replacement, flywheel resurfacing or replacement, synchronizer repair, shift linkage adjustment, and input and output shaft bearing service. We also service transfer cases for 4WD vehicles with manual transmissions.
What causes a transmission to shudder or vibrate?
Transmission shuddering is commonly caused by contaminated or degraded transmission fluid, worn torque converter clutch material, failing solenoids, or internal clutch pack wear. In CVT transmissions, juddering often results from belt or chain wear and degraded CVT fluid. Our diagnostic process includes fluid analysis, computer scanning, and road testing to pinpoint the exact cause. Early treatment with a fluid exchange can often resolve shudder before internal damage occurs.
Is it worth rebuilding a transmission or should I replace it?
Whether to rebuild or replace depends on the vehicle's value, the extent of damage, and your budget. A rebuild uses your existing transmission case and replaces worn internal parts, which is often more cost-effective. A replacement installs a remanufactured or used unit. Our ATRA certified technicians inspect your transmission and provide honest recommendations based on what makes the most financial sense for your situation.
Schedule Your Transmission Service Today
Do not wait for a small transmission problem to become a major repair. Our ATRA certified team is ready to diagnose and repair your transmission with honest assessments and transparent pricing.