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TRNW, Transmission Rebuilders Network Worldwide

is an international network of transmission technicians, transmission rebuilders, and transmission shop owners who discuss every aspect of running a transmission repair facility. TRNW members interact on everything from rebuilding tips, diagnostic help, troubleshooting, parts locating, and the art of operating and managing a full-service transmission shop.

TRNW is like having hundreds of transmission rebuilders at your door step to answer your questions. No job is too difficult! TRNW members unite together to help solve the most complicated problems from today's complex, fully electronic, automatic transmissions. Join TRNW today and see what your missing! It's like a seminar in your mail box every day!

TRNW has the most active and the most informative tech forum in the transmission industry! Our members rave about how great our service is, and you will too! Be sure to join TRNW today!

Becoming a TRNW member is Easy and Safe! We use the latest "Verisign" secure encryption technology available. View our Privacy Policy, and our Refund Policy. All participants of this group must agree to the terms of our Terms of Use Agreement.

Transmission Industry News

  • ATSG Confirmed Fix for February: 2007 Dodge Ram 1500 545RFE setting code P0760 OD Solenoid Circuit Learn more
  • Sonnax releases a new heavy duty overdrive "E" piston made from high-strength billet aluminum featuring an improved design to prevent breakage in Ford 6R60/75/80 and ZFHP26 transmissions.
  • Sonnax introduces two new drop-in LPC signal damper piston kits to correct circuit pressure variation and prevent future wear in listed transmissions - with no reaming required:
    • Ford 10R60/80/90/140 & GM 10L80/90 (Gen. 1): 105740-04K
    • GM 10L80/90 (Gen. 2): 105740-05K
  • Sonnax announces a new drop-in TCC signal damper piston kit to correct circuit pressure variation and prevent future wear in Ford 10R60/80 & Gen. 1 GM 10L80/90 transmissions - with no reaming required.
  • Sonnax now offers four high-strength input shafts for unbeatable performance in TH400 transmissions:
    Heavy Duty:
    • 30 Spline for use without internal turbine support bushing in converter: 30280-01
    • 30 Spline for use with turbine support bushing in converter: 30280-02
    Extreme Duty:
    • 35 Spline for use with turbine support bushing in converter: 35280-02
    • 27 Spline for use with pumps converted for 1-3/16" shaft configuration: 27280-02
  • ATSG presents, Jonathan Sherman's Management Training Curriculum, which begins on Wednesday, Jan 31st. Sign up now!
  • ATSG will be holding an IN-PERSON Technical Seminar at the John Force Racing Center in Yorba Linda, California on February 10th! Sign up here!
  • Sonnax releases a new drop-in bypass blocker valve kit that allows the faulty OE thermal element lineup in '11-'16 Ford 6R140 valve bodies to be eliminated, thus preventing the potential of transmission overheat.
  • Sonnax introduces three new 300M steel, heavy duty input shafts featuring a unique design for max protection against stress crack failure in high-horsepower 4L60/E series street/strip applications:
    • 298mm: 77733-10SB
    • 300mm non-reluctor style: 77733-11SB
    • 300mm reluctor-style: 77733-12SB
  • Transgo® now has a Shift Kit™ Valve Body Repair Kit for 8L45 and 8L90 Transmissions! New Product Announcement
  • Don't plug that bypass! STOP DELETING BYPASSES. Use Superior's SURE~COOL® STL010™ system TODAY! Learn more
  • Toledo Trans-Kit® introduced a new Overhaul Kit for Honda 2010-Up #MV2A and #B8CA 6-speed FWD transmissions. Contact your Seal Aftermarket Products representative for more details. Learn more!
  • Transgo® just announced a new Oversized Pressure Regulator Valve for high mileage pumps on 6L45, 6L50, 6L80, & 6L90 transmissions
  • Transgo® now offers the first and only 6L80 performance kit for trucks and other HP applications.
  • Central Valve Bodies is now selling drop-in valve body components and kits! You can sign up to get updates about new product releases. Top quality valve body replacement parts - specializing in drop in applications, no reaming necessary! Learn more
  • ATSG Confirmed Fix for January: 2006 Chevy 2500 6.6L Allison 1000, slipping in 4th gear and setting code P0777 Learn more
  • Transgo® now offers a long term fix for a common wear area in Toyota transmissions. Learn more
  • ATSG intoduces the New 10R80 TechTran Manual! Available in both print and download, enjoy the manual at your fingertips or on your devices! Learn More
  • TRNW launched it's new iOS App! Now available in the Apple App Store!
  • Transgo® now offers a Cooler Flow Bypass Delete Kit for 6R60 & 6R80 transmissions. Learn more
  • The NEW 2020 Dura-Bond Transmission Catalog is now available for download. CLICK HERE to download!
  • Dura-Bond decided to put this video together to address some of the questions and concerns that we have heard from you guys at the transmission seminars, trade shows, and even from this group.
    Transmission Fixes - "You Asked, We Listened"
  • Here is a "Teaser" for the upcoming Dura-Bond Video Series "Race Proven...Time Tested",   Hosted by William Dolak! CLICK HERE
  • TRNW launched it's new Android App! Now available in the Google Play Store!
  • Valve Body Pro is proud to introduce their latest innovation: Rebuilt Solenoid Blocks for the 5R55N/W/S, with an additional option for solenoid repair kits with Maxx Fluxx SOLPRO rebuild kits.
  • Seal Aftermarket Products now has the complete overhaul kit for the U250E series transmission with year coverage 2005-2009. Click here for more information
  • Superior now offers a valve body upgrade kit for all 6 solenoid KM's! Part #: STL-175-6. Click here for more information
  • Seal Aftermarket Products now has the complete overhaul kit for the AW TF 80SC series transmission with year coverage 2006-up. Click here for more information
  • Superior has introduced an extra thick valve body separator plate for 4R70W & 4R75W! Click here for more details!
  • Seal Aftermarket Products now has the complete overhaul kit for the ZF5HP19/FL/FLA series transmission with year coverage 1996-up. Click here for more information
  • Superior Transmission Parts is proud to announce their new A618 / 48RE LOW & REVERSE SUPER SERVO! Click here for more info!
  • Seal Aftermarket Products now has the complete overhaul kit for the ZF6HP26 series transmission with year coverage 2001-up. Click here for more information
  • G-TEC proudly announces our optional filter system for all TurboTank and G-TEC heated cooler line flushers in a ready to install kit form. Click here for more information
  • Seal Aftermarket Products now has the complete overhaul kit for the HONDA/ ACURA (Vue 2004-Up) 4 SHAFT, 5 SPEED series transmission with year coverage 2003-Up. Click here for more information
  • Seal Aftermarket Products now has the complete overhaul kit for the VW09M series transmission with year coverage 2006-up. Click here for more information

TRNW Store

G-Tec Heated Cooler Line Flusher

G-Tec Heated Cooler Line Flusher

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Sonnax Vacuum Test Stand

Sonnax Vacuum Test Stand

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VB-Fix Reaming Fixture

VB-Fix Reaming Fixture

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47RE Noise Filter

47RE Noise Filter

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GM Power Relay

GM Power Relay

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Programming Harness

GM 6-Spd Programming Harness Set

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