GM 6L series no-movement conditions: Analysis and repair tips
I am certain that many have experienced a no-movement forward, no-reverse or abnormal pressure condition with a GM 6L series transmission, especially since they are one of the most popular unit families in shops today. So, let’s examine some conditions and causes along with a few diagnostic tips for troubleshooting. We’ll go through a few
Valve body and component suppliers: A comprehensive list
Looking for a comprehensive list of the industry’s valve body and valve body component suppliers for 2023? TD has you covered. Below, find a list of suppliers including contact information, addresses, etc. You can find the list here, or right-click the images below to enlarge.
How to fix GM 8L45/8L90 no-move and no-pressure conditions
By now you may have heard of, or even experienced, a GM 8L45 or 8L90 transmission with a no-move or no-pressure condition. Conditions of no movement or no pressure after repair have plagued this unit since its inception. Here’s what you can do about them. Condition 1: No movement after fast learn or programming If
Sonnax introduces 4L60-E, 4L65-E heavy-duty remanufactured valve bodies
Sonnax highlights its heavy-duty remanufactured valve bodies for ’96–’08 GM 4L60-E/65-E transmissions. Two part numbers are offered: GM053-HD, which the company says offers improved sprag/clutch durability in D3 first and second gears; or GM054-HD (pictured above), which adds overrun clutch control to those gears plus D4 first, second and third, the company says.
Fixing 4L60-E 1-2 shift issues
The complaint A 1993 Chevrolet 1500 with the 5.0-liter engine and 4L60E transmission has a complaint of second gear starts. The truck seemed to start off in first gear on an initial cold start but would stay in second gear at a stop or even when shifted out of Drive to Park or Reverse and
Ford 6R140 separator plate identification: How to identify changes and interchangeability
Ford introduced the 6R140 transmission, paired with the 6.7L diesel, in early 2010 for 2011 model year production. This has created confusion when trying to identify valve body components, as new model year release is usually near the end of the previous year. Valve body and separator plates have gone through numerous updates since the
RatioTek releases valve body kits for Ford 10-speed transmissions
RatioTek has released new valve body kits that fit Ford 10R140 10-speed transmissions, model years 2020 and later. According to the company, these increase torque capacity, and are installed from the bottom without removing the transmission. There are two varieties available: PR kits and PRX kits. PR kits are designed for the everyday rebuild, and
How reman valve bodies are evolving
For most of the past half century, the rebuilding of the valve body has been the skill set that separates master transmission builders from those with less experience. It follows that, much like a torque converter, purchasing a factory remanufactured valve body as a sub assembly has become more and more common. It’s not only
Sonnax highlights end plug kit for Chrysler valve bodies
Sonnax highlights its o-ringed end plug kit (#85740-01K), which the company says can restore hydraulic control and renew crucial circuit pressures in PBW and PBC Chrysler 948TE and ZF9HP48 valve bodies. According to Sonnax, this drop-in Zip Valve kit services all 6/3 (PBW/PBC) bores where end plug sealing is critical for proper function.
Dealing with GM 6L series rebuild issues
During a rebuild of a GM 6L80 transmission, while the valve body was being serviced, an incorrect spacer plate was accidentally used. This blocked supply pressure to the 3-5-R regulator valve which prevented the 3-5-R clutch from applying. One of the more significant changes made to the valve body for 6L80 series transmission is related
68RFE Bonded Heavy Duty Valve Body Separator Plate
Transtar’s 68RFE Bonded Valve Body Separator Plate for 2011-2020 45RFE/68RFE transmissions is three times thicker than the OEM plate and can be used for Stock or Heavy Duty applications (p/n 72320BA). There are two versions of 45RFE/545RFE/66RFE/68RFE valve bodies. The early version uses (7) checkballs and has a white solenoid pack case connector. The late
Identifying Allison 1000/2000/2400 Valve Bodies
Over the years, the Allison® 1000/2000/2400 valve body has had four versions. This article is written to help identify each version. The first two versions are five-speed and the last two are six-speed valve bodies. The information will explain casting number and separator-plate combinations that work correctly together.
