Sonnax Product Support
When you bring Sonnax into your shop, you get the best parts, the best tools – AND the best support. Why? Sharing knowledge is a big part of who we are. Our team of seasoned automotive professionals and product specialists is here to help you get the most out of Sonnax products by providing:
- Vital information about the application and installation of Sonnax parts
- Assistance with questions about product instructions
- Support for Sonnax parts that appear defective or are not performing as expected
- Where can I buy Sonnax transmission products? Contact a Sonnax parts distributor.
- I don’t see prices on your website, can I start an order over the phone? Learn where to buy Sonnax products.
- Where are the product instructions? Instructions are located on our website product pages and are sometimes included in product packaging. Quickly find instructions by part number here.
- Should I rebuild a unit myself or buy a remanufactured valve body? Professional builders are most likely to have the equipment, skills and knowledge to diagnose and repair transmissions. DIYers without these resources often have most success with a Sonnax remanufactured valve body. For valve repairs that don’t require reaming, check out Sonnax drop-in Zip Valve products.
- What transmission kit do you recommend for improving shift quality? Four types of Sonnax shift repair kits are available for more than 100 units. See options and how to choose the right kit for your build.
Before Contacting Sonnax
Help us help you by being prepared to answer key questions about the vehicle.
- Know the vehicle year, make, model, engine type/displacement and transmission model. It is CRITICAL to properly identify some valve bodies. View ID Guides
- Do a complete scan of the vehicle for codes.
- Check the condition of the fluid.
- Gather details on the vehicle’s recent repair history (if applicable).
Hours 8:30 a.m. – 5 p.m. ET, Mon. – Fri.
Call (800) 843-2600 ext. 398 or +1 (802) 463-0288
Email [email protected]
General Technical Questions
Our team can only assist with questions about Sonnax products. For help with general diagnosis, repair and unit builds, we recommend these resources:
Transmission Technical Hotlines:
Automatic Transmission Service Group (ATSG) (800) 245-7722
Automatic Transmission Rebuilders Association (ATRA) (805) 604-2000
Reference Information: All Data | Mitchell | Indentifix
Critical Valve Body Identification Guides
Unless you’re an expert on a particular transmission, don’t wait until you’re about to install parts to verify what valve body you have — they aren’t always model and VIN specific. Always identify the following units with a Sonnax ID guide BEFORE starting a build or contacting product support.
Need help identifying other units? View all Sonnax valve body identification guides.
Meet the Sonnax Tech Team
Sonnax employs a team of skilled technicians dedicated to working one-on-one with industry professionals. Whether you’re trying to identify the right Sonnax part for your build, looking for help in selecting parts for a powerhouse performance transmission or assistance with reaming, vacuum testing and product installation techniques, Sonnax is here for you!
Caleb Perham
Automotive Technical Specialist
Caleb joined the Sonnax technical team in 2022. He has over 10 years experience as an automotive technician. In his spare time, he enjoys building circle track race cars.
Jim Mobley
Technical Communications Specialist
Jim joined the Sonnax team in 2021 with more than 40 years’ experience in transmission repair and diagnosis. He got his start repairing tractors and farm equipment at a young age, then went to work for Aamco right after high school where he eventually became a shop owner.
Over his career, he’s been engaged in helping technicians fix vehicles at U-Haul production remanufacturing facilities, as a corporate development consultant at Aamco and in product development and support at TransGo. Today, Jim brings his expertise to Sonnax, helping technicians online and offline in popular social media groups that specialize in transmission rebuilding.
Randall Schroeder
Technical Sales & Training Specialist
Randall came to Sonnax in 2012 with more than 40 years of automotive training, diagnostic and repair experiences in tow. Realizing a love of repairing things at a young age, 12-year old Randall went from fixing roller skates to skateboards to bicycles – not just for the area children, but for their parents as well. Randall began his professional career in 1975 at a Ford dealership, later working for ATRA from 1995 –2011. At Sonnax, Randall has spent the vast majority of his time crisscrossing the nation, training technicians one-on-one, both in valve body repair as well as technical building skills and procedures.
Randall and his loving wife, Donna, proudly boast a combined, blended family of five children, as well as nine grandchildren – who all “LOVE” drag racing. When he’s not expounding on the virtues of vacuum testing, Randall can be found indulging in some of his favorite hobbies of the outdoors, such as auto racing, fishing and hiking.
Tory Royce
Technical Support Engineer & Product Support Specialist
Tory Royce is a seasoned automotive professional with more than 20 years in the industry, including extensive background at the dealer level with Ford, Mazda, Saab and VW/Audi. He has been a solid part of the tech team at Sonnax since January 2007, expertly guiding technicians in the application and successful use of the full Sonnax product line. His outside interests include snowmobile and motorcycle riding, and he enjoys movies, classic rock and all forms of home and mobile infotainment.