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Latest News

April 13, 2017 Top10 beijing

Sonnax Wins Top 10 Best Tool Award

Sonnax is honored to receive a Top 10 Best Tool award for the innovative vacuum test stand kit VACTEST-01K.

The Automobile Driving and Service magazine organizes an award program to name the top 10 best tools in the China Auto Maintenance Equipment Industry (CAMEI). Nominees perform live product demonstrations in front of an expert committee that is responsible for determining which tools are worthy of this prestigious industry award.

Sonnax China sales representative, Ming Qi, recently traveled to Bejiing to demonstrate how easy it is to master vacuum testing with the award-winning vacuum test stand kit — which is proven to save time, money and prevent costly comebacks for hundreds of transmission repair shops around the world.

Learn more about vacuum testing.

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April 11, 2017 Sonnax receives award

Sonnax Earns Worksite Wellness Recognition

Sonnax has again been honored for the quality of its worksite wellness programs by the Governor’s Council on Physical Fitness & Sports and Vermont Department of Health. The employee-owned company was among 90 employers recognized at Vermont’s annual Worksite Wellness conference March 23 at the Sheraton Hotel and Conference Center in South Burlington.

Affirming that “having the right attitude about your health is important,” Governor Philip B. Scott expressed his appreciation to the attendees for their commitment to forward-thinking wellness policies that benefit employees and employers alike. “Your dedication to creating a culture of wellbeing makes Vermont a great place to live and work.”

Ninety employers received Governor’s Excellence in Worksite Wellness Awards, of which Sonnax is a multi-time winner.  Sonnax Executive Assistant Jamie Scott and Tamara Golden, Sonnax’s Driving Wellness health coach, were on hand to receive the award from Scott and Vermont Commissioner of Health Mark A. Levine.

“Sonnax has partnered with Marathon Health for over five years now to provide ongoing wellness services that support the health and wellbeing of employee owners and their spouses,” Golden said.  “About 80 percent of the population participates in the wellness program, which offers insight, education and health coaching to help individuals improve their lifestyle and take control of their own health. Sonnax leaders recognize that the greatest wealth is health, and have demonstrated a commitment to support employee owners beyond their paychecks.”

Sonnax is dedicated to offering an at-work solution delivering high-quality worksite wellness that engages the employee, reduces risk, lowers cost and results in a happier, healthier workforce. It offers onsite wellness coaching, challenges and education sessions aimed at helping employees take charge of their physical, emotional, social and spiritual wellbeing.

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April 05, 2017

CVT Success: In-Vehicle Isolation of Common Problems

When it comes to diagnosing and repairing CVTs, it can be an uphill battle if you don’t have the right information on hand. In this article, you’ll learn tips for CVT success:

  • Beware of false assumptions
  • Identify common complaints 
  • Isolate and fix common problems

Read Now


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April 04, 2017

Stop 4T60-E, 4T65-E Case Wear, Band Slippage & Breakage with a Longer Servo Pin

Learn how to stop 4T60/65-E case wear, band slippage & breakage and help keep comebacks out of your shop:

  • Discover why it happens
  • See how to fix it and prevent future issues

Read Now

March 29, 2017 Ts report cover march 2017

March Transmission Report Newsletter Just Released

Featured in this issue:

  • Top Products/Tools as Voted by YOU
  • Outsmarting 4L80-E Overdrive Roller Clutch Failure
  • Two Simple Parts Help Guard Against 4L60/E Clutch & Shift Concerns
  • Protect Against 4T60/65-E Comebacks
  • New Performance Parts & Catalogs

Read Now!


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March 22, 2017 Vtp survey v4

What's Next for Vacuum Test Plates? Vote Now!

Sonnax develops every new product with you in mind. Over the past year, we’ve released three vacuum test plates – and we want to hear from you about which applications to cover next. 

Which plates would help your shop the most? 
Vote Now!


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March 08, 2017 Sonnax website redesign

Sonnax Website Redesign: New Look, Faster Load Times and More

Why did we do this?
Much like we update our cell phones and computers, Sonnax must periodically update its website to keep up with the latest technology. Over the past year, our web team has been hard at work rebuilding the Sonnax website from the ground up to make it faster and easier to use than ever before.

What are the biggest changes?

  • The navigation and various pages have been redesigned to make it easier to find exactly what you’re looking for. All the information is still there, but some of it may be in a slightly different location.
  • Unit pages now feature torque converter or transmission parts – not both. Ford 6R140, for example now has a 6R140 transmission page as well as a 6R140 torque converter page.
  • Tech resources have been consolidated into one convenient location. Now, valve body layouts, vacuum test guides, articles, videos and more can all be found on our Tech Resources page.

Will my bookmarks/links still work?
Links to part pages, product line landing pages and the homepage are still the same. Unit pages and tech resource links, however, have changed due to the updated navigation structure.

  • If you’re looking for a transmission unit, go here.
  • If you’re looking for a torque converter unit, go here.
  • If you’re looking for tech resources such as articles or videos, go here.

I used to place orders through your website...what should I do now?
Contact your Sonnax sales representative.

Do I need a login/Will my old login still work?
No, you do not need a login to access any data on the Sonnax website anymore.

How do I (or my customers) make a suggestion, offer a comment or ask a question about the website redesign?
Contact us! We welcome all questions and feedback.

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March 01, 2017 4l80 e overrun clutch drum components

It’s Snow Plowing Season Again! Understanding 4L80-E Overdrive Roller Clutch Failure

Plow trucks running GM 4L80-E and Ford 4R100 transmissions often suffer from Overdrive roller clutch failure:

  • Understand how and why it happens
  • Learn how to prevent it to keep comebacks away and protect your warranty

Read now.

February 17, 2017 Td top 10 2017

Sonnax Wins Big in Top 10 Contest – Thanks to YOU!

Every year, Transmission Digest accepts nominations for the top 10 products and tools in the powertrain aftermarket. Readers vote for their favorites to determine the winners. 

The results are in: Sonnax won seven top product awards, and four top tool awards! Thank you all for your trust and support of Sonnax products – we couldn’t have done it without you!

7 Top Products

  • Chrysler 45RFE, 545RFE, 65RFE, 66RFE & 68RFE
    Line Pressure Booster Kit: RFE-LB1
    Get the right amount of pressure, exactly when you need it in both gas and diesel applications.
  • Chrysler 47RE, 47RH, 48RE
    Extreme Duty Intermediate Shaft: 22171B-HD
    Increase torque and load capacity without worrying about shaft fracture in high-horsepower street, towing or competition applications.
  • Chrysler 48RE
    Converted Valve Body: CHR135
    Breakthrough, plug-and-play solution for 48RE valve body shortage.
  • Ford 4R70W, 4R75W & AOD/E
    Smart-Tech® High Capacity Forward Clutch Drum Kit: 76655-01K
    Get 20-40% more clutch capacity – no modifications required!
  • GM 4L60/E Series
    2.84 Ratio Input Carrier Kit: 77284-K
    Ramp up from OE wide ratio to race-ready close ratio for game-changing acceleration on the track.
  • GM 6L80 & 6L90
    1-2-3-4 Piston: 104984-01
    Stronger-than-OE billet aluminum conquers chronic cracking and delivers maximum durability and performance.
  • GM 6T70 & 6T75 (Gen. 1)
    Zip Kit®: 6T70-ZIP
    Target the root cause of multiple drivability issues to get your vehicle back on the road fast.

4 Top Tools

  • Ford 6R60/75/80, ZF6HP19/26/32 & ZF6HP21/28/34
    Solenoid Test Manifold Kit: 95430-VTK
    Take the guess work out of replacing solenoids with quick, easy, cost-effective pass/fail verification of the solenoid's internal sealing integrity.
  • 3-Part Vacuum Testing Video Series
    See how easy it is to master vacuum testing and work with confidence knowing your rebuild is done right the first time.
  • Valve Body Layouts
    More than 40 free, go-to guides make it quick and easy to determine what’s available for the specific unit you’re working on.
  • Webinars
    Free webinars hosted by Sonnax tech specialists deliver trusted transmission expertise straight to your screen.
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January 30, 2017 Fb plow truck repairs image

Top Plow Truck Transmission Repairs & Upgrades

Heavy snow storms, sub-zero temps, and black ice are a few of old man winter’s favorite tricks…and can lead to treacherous driving conditions. Working hard to keep roads safe, plow trucks often burn through transmissions and end up in the shop.

Check out these top transmission repairs and upgrades to get them back on the road and going strong before the next storm hits!

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