Santa Rosa's Top Transmission Maintenance Shop
Tristar Automotive has been providing expert transmission diagnostics, repairs, and replacements for drivers in Santa Rosa and across Sonoma County since 1991.
Why Choose Tristar Automotive for Transmission Service?
Our ASE-certified technicians use advanced diagnostic equipment to pinpoint transmission issues quickly. Whether it’s routine service or a complete rebuild, we deliver dependable results that extend the life of your vehicle. With our A+ BBB rating and oversight by the California Bureau of Automotive Repair (BAR), you can trust us for quality and compliance.
Transmission Diagnostics
Your transmission is a highly complex system that combines mechanical components, hydraulic fluid, and electronic controls. When issues arise -such as rough shifting, slipping gears, or warning lights – it takes more than a visual inspection to uncover the problem. At Tristar Automotive, we use cutting-edge diagnostic equipment to evaluate sensors, solenoids, and the transmission control module. Our technicians check fluid condition, perform road tests, and analyze error codes to create a precise repair plan. By identifying problems early, we help drivers in Santa Rosa and Sonoma County avoid unnecessary breakdowns and costly replacements, ensuring their vehicles remain safe and reliable.
Transmission Service & Fluid Exchange
Routine transmission maintenance is one of the most effective ways to extend the life of your vehicle. Over time, transmission fluid can break down, become contaminated, or lose the additives needed to protect gears and clutches from wear. At Tristar Automotive, our service includes draining old fluid, replacing filters when needed, and refilling with manufacturer-recommended fluids. This process helps maintain proper lubrication, improves shifting performance, and prevents overheating. For drivers across Santa Rosa and the North Bay, keeping up with fluid exchange intervals provides long-term protection and helps avoid costly repairs down the road.
Transmission Repair & Rebuilds
Even with proper maintenance, transmissions can develop serious issues over time. Whether it’s a failed clutch pack, damaged torque converter, or worn-out bearings, our ASE-certified technicians have the training and experience to handle repairs of all sizes. In some cases, a full rebuild may be the most cost-effective option, especially for vehicles with high mileage. At Tristar Automotive, we carefully disassemble, inspect, and restore transmissions to factory specifications using quality components. Our goal is to return your car or truck to reliable operation while minimizing downtime. Customers in Santa Rosa and Sonoma County trust us for honest assessments, skilled workmanship, and lasting results.
Transmission & Drivetrain Services
- Transmission Service & Repair
- Transmission Replacement (new or rebuilt)
- Transmission Fluid & Filter Change
- Clutch Repair & Replacement
- Axle and Transaxle Replacement
- Differential Repair & Replacement
Other Auto Repair Services
Be sure to read more about how our Factory Scheduled Maintenance services can save you money. And, be sure to view our complete line-up of Automotive Repair and Services available at Tristar Automotive in Santa Rosa, CA!
Why Santa Rosa Drivers Rely on Us for Transmission Service
With decades of transmission expertise, a proven BBB A+ rating, and ASE certification, Tristar Automotive is trusted across Sonoma County and the North Bay for dependable repair and maintenance solutions. Our work is backed by transparency, professionalism, and a reputation built since 1991. Whether you’re driving a commuter car, work truck, or family SUV, we ensure your transmission gets the care it deserves.
Trusted Transmission Service in Santa Rosa & Sonoma County
Since 1991, Tristar Automotive has provided expert transmission care backed by certified technicians, a BBB A+ rating, and compliance with the California Bureau of Automotive Repair.
Increase the longevity of your vehicle with routine maintenance
Transmission Fluid Breaks Down
Transmission fluid is vital to the health of your car transmission. Considerable heat may build inside your transmission as the transmission fluid attempts to cool and lubricate friction points and moving parts while under various operating conditions. Small metal and fiber particles can also accumulate and result in accelerated wear and tear. Regular transmission flushing alleviates the effects of wear and tear.
Signs Of Transmission Issues
Help cut the cost of transmission service by taking care of small problems before they worsen. If you notice any of the following signs, schedule an appointment at your nearest Tires Plus for a service or repair before your transmission fails
- Transmission slips or vehicle does not move forward when accelerator pedal is depressed
- Rough shifts from gear to gear
- Thud or clunking noises when the transmission shifts gears
- Long pauses between shift points
- Transmission fluid leaking reddish fluid under vehicle
- Transmission warning light on your car or vehicle’s instrument cluster
How Often Is Transmission Service Required?
Always refer to your car owner’s manual for factory recommended maintenance intervals. The average vehicle needs to get a transmission fluid flush every 30,000 to 50,000 miles, with some manufacturers suggesting a service life of up to 100,000 miles. But, a lot will depend upon your driving habits and requirements, causing the fluid to break-down at an accelerated rate – requiring more frequent service intervals.
