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 5-speed and the last two are 6-speed valve bodies. The information will explain casting number and separator plate combinations that work correctly together. Show 2001–2003 (5-Speed)
2004–2005 (5-Speed)
2006–2009 (6-Speed)
The casting number for the modulated main pressure housing for the ’04–’05 5-speed is the same as the casting number for the
2010–Later (6-Speed)This valve body was totally redesigned for 2010 and will not interchange with any previous years.
At a GlanceTo quickly identify which version of the Allison 1000/2000/2400 valve body you have:
Common Valve Body Problems
Caution: Only use a soft-face hammer and GENTLY tap on the valve body face. After removing the dowel pins, they may be a little distorted. Use a file to remove any marks that were made by the vice. The ‘10-later 6-speeds have been holding up well. Currently there are no common problems with this new design. Jeff Parlee is the Sonnax remanufactured valve body product support manager and member of the Sonnax TASC Force (Technical Automotive Specialties Committee), a group of recognized industry technical specialists, transmission rebuilders and Sonnax Industries Inc. technicians. Where is transmission control solenoid located?In most cases, solenoids are located inside of the oil pan, connected to the valve body. Depending on what you drive, the technician may be able to replace just the failed shift solenoid.
Where is the pressure control solenoid B location?Pressure control solenoids are located inside the transmission and are responsible for controlling pressure within the transmission's hydraulic circuits.
Can a pressure control solenoid be replaced?Replacing a transmission pressure conrol solenoid can be done by most any auto repair shop, automobile dealership service center or you can do-it-yourself “DIY”. The cost to replace a failed transmission pressure control solenoid varies by vehicle make, model and year.
|