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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

  • Sonnax introduces a new drop-in TCC signal damper piston kit to easily correct circuit pressure variation with lasting results in Ford 10R140 transmissions.
  • Sonnax announces a new hardened steel center support sleeve to restore proper hydraulic control and prevent future sealing ring wear in Ford 6R60/75/80 transmissions.
  • Sonnax releases two new heavy duty "E" clutch hubs to significantly increase "E" clutch durability and eliminate spline failure so there's no more worrying about comebacks in the following Chrysler transmissions:
    Fits 845RE & ZF8HP45
    Fits 850RE & ZF8HP51/55
  • Sonnax unveils a new unique shift lever kit that makes it easy to install a short-length manual shaft that delivers trouble-free operation with aftermarket shifters in GM 4L80/85-E custom transmission builds and performance applications.
  • Rostra offers a speed sensor and harness assembly to easily replace OE speed sensor and harness assemblies in '15-'22 GM 8L90 applications.
  • Seal Aftermarket Products is pleased to announce the immediate availability of Toledo Trans-Kit® Overhaul Kits for 2017-on 10L80 and 10L90. Learn More
  • Transgo has released a 62TE high pressure kit for shift-busy ProMaster® and passenger vans. Learn More
  • ATSG In-Person Seminars are back! Sacramento, CA on 5/11/2024, Orlando, FL on 5/15/2024, Dallas, TX on 8/17/2024. Learn More
  • ATSG Confirmed Fix for May: 2012 Jeep Grand Cherokee NAG1, : Transmission quits shifting at times while setting codes U0114, U0102, and U0402. Learn more
  • Sonnax introduces a new oversized cooler/lube flow control valve kit to recover hydraulic control and restore cooler/lube performance with lasting results in Toyota/Lexus UA80E/F & UB80E/F transmissions.
  • Sonnax introduces two new output planet saver kits to save the planetary assemblies and prevent comebacks in GM 6L80/90 transmissions.
    • Fits 6L80: 104584-80K
    • Fits 6L90: 104584-90K
  • Sonnax announces a new, drop-in 4-5-6 sleeved accumulator piston kit to recover hydraulic control and renew shift performance in GM Gen. 2 6T70/75/80 transmissions.
  • • Drop-in Kit: 44912-36K
    • Oversized Kit: 44912-41K
  • Transgo introduces a new oversized S4 regulator valve for GM 8L45 and 8L90 transmissions! It solves significant wear issues at the S4 regulator valve position. Download PDF
  • Transgo now has a Billet Accumulator Piston Kit for A604, A606, 40TE, 41TE, 42LE, 62TE, 42RLE, 45RFE, 545RFE, 65RFE, 66RFE, & 68RFE transmissions! Download PDF
  • 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 April: 2016 Toyota Tundra A760E, slight bind going into 3rd and neutrals going into 6th gear. 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
  • 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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TRNW T-Shirt

Decals, T-Shirts, & Polo Shirts

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