Transmission Rebuilders Network Worldwide. Transmission Diagnostic Help, Rebuilding Tips, Transmission Forum, Message Board, Electrical Diagnosis, Troubleshooting

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!

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Transmission Industry News

ATSG Confirmed Fix for October: 2020 Ford Edge with an 8F35 exhibiting a harsh 2-1 coast downshift and intermittent no reverse. Learn more
Transgo introduces it's new 68RFE 2019-on SHIFT KIT® valve body repair kit! The patented solution for slow-burn UD clutch failure in 2019-on 68RFE Learn More
ATSG Confirmed Fix for September: 2021 Chevy Suburban with a 10L80 that has no reverse and is setting code P0776. Learn more
For new or returning customers, ETE Reman is offering $100 Amazon gift cards every time you buy a transmission, engine, transfer case, or differential for 100 days. Learn more
ATSG is excited to announce the release of their NEW Spanish TechTrans starting with the 10R80 & 10L80/90 and 10R140 TechTrans. This is just the beginning! They're committed to expanding their Spanish TechTran line for all popular transmissions.
Where to get them:
· Mexico: Power Star de México
· USA: atsgbookstore.com
The culprit behind GM safety recall N242480630 is the OE feed limit low valve, which can wear out in as little as 30,000 miles and lead to sudden wheel lockup, code P0747 and limp mode. Sonnax introduces a new drop-in feed limit low valve kit that restores proper valve function immediately without the need or expense of replacing the entire valve body in GM 10-speed transmissions.
Sonnax announces two new adjustable low/reverse servo kits featuring a unique design that makes band maintenance quick and easy in GM TH400 racing transmissions:
· Fits TH400
· Fits 4L80/85-E
Sonnax releases four new low/reverse switch checkball sleeve kits to tackle pressure loss that leads to burnt low/reverse clutch, delayed/no Reverse, and no engine breaking when in Low in listed Chrysler transmissions:
Fits 45/545/65/66/68RFE:
· Drop-in Kit
· Oversized Kit
Fits 62TE:
· Drop-in Kit
· Oversized Kit
A direct replacement for 4L80/85-E transmissions and easily adapted to TH400, the new Sonnax heavy duty intermediate clutch outer sprag race expertly guards against sprag failure in all stock and performance applications - regardless of power level.
Transgo® introduces a ZF8HP/845RE SHIFT KIT® valve body repair kit that addresses the most common 8HP series GEN1 failures and shift complaints.
Rostra introduces a new internal wire harness connector to repair failed wire harnesses in 2006-later Allison 1000/2000/2400 transmissions.
Transgo® now offers an over-sized AFL valve for 6L80 transmissions. Designed for builder preference and high-mileage reliability.
TransGo® has permanently upgraded their highly popular 62TE High-Pressure Tuneless™ Valve Body Reprogramming Kit™, incorporating valuable feedback from technicians in the field to deliver even greater performance and durability.
ATSG Confirmed Fix for August: 2021 Dodge Ram 3500 with a 68RFE setting code P0871 when placed in drive after installing reman transmission. Learn more
ATSG In-Person Seminars for 2025! [Orlando, FL on May 17th], [Dallas, TX on Aug 16th] Learn More
ATRA has released it's 2025 seminar schedule! Upcoming dates are 1/31/2025 in Charlotte/Mooresville, NC and 2/8/2025 in Glendale, AZ. See the Full Schedule
Sonnax releases a new oversized K3/B2 valve kit to tackle 2-3 flares, delayed Reverse, and pressure switch codes in Aisin Seiki AS68RC transmissions.
Transgo has released a universal Ford cooler bypass delete kit that also works on 62TE Learn More
48RE valve body worn out? But cores are scarce and rebuilt valve bodies too expensive? Check out this cost effective solution from TransGo! CLICK HERE!
Rostra offers a speed sensor and harness assembly to easily replace OE speed sensor and harness assemblies in '15-'22 GM 8L90 applications.
Transgo has released a 62TE high pressure kit for shift-busy ProMaster® and passenger vans. Learn More
ATSG Confirmed Fix for July: 2006 Lexus IS250 A960 setting codes P0974 and P0980. Learn more
Sonnax announces an important product update: Renowned for maximizing clutch capacity and squawk resistance in heavy-duty Dodge trucks, the popular Sonnax 68RFE Smart-Tech® overdrive clutch housing kit now includes more screws. Watch the video on this page to learn more.
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® has a new Drop-in fix for accumulator bore wear causing 4-5-6 clutch failures and shift complaints on 6T70, 6T75, and 6T80 GEN2
Don't plug that bypass! STOP DELETING BYPASSES. Use Superior's SURE~COOL® STL010™ system TODAY! Learn more
Transgo® just announced a new Oversized Pressure Regulator Valve for high mileage pumps on 6L45, 6L50, 6L80, & 6L90 transmissions
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 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!
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.
Superior now offers a valve body upgrade kit for all 6 solenoid KM's! Part #: STL-175-6. Click here for more information
Superior has introduced an extra thick valve body separator plate for 4R70W & 4R75W! Click here for more details!
Superior Transmission Parts is proud to announce their new A618 / 48RE LOW & REVERSE SUPER SERVO! Click here for more info!
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