Allison valve body for 2000, remanufactured and ready to install. Ships fast from the USA.
GM Kodiak and TopKick medium-duty trucks and 3500 HD-class chassis running the 2010-and-newer Allison 2000 with the Duramax diesel wear out a valve body faster than lighter-duty trucks because they spend more time at full line pressure under a loaded box or trailer. If yours is shifting harsh, flaring on a shift, slipping between gears, or has dropped into limp mode with a solenoid or ratio code, this remanufactured 7-solenoid valve body is built for the no-tubes casting Allison introduced for 2010 and later, bench-tested with the correct updates before it ships.
The Allison 1000 and 2000 Series share the same control platform and valve body castings, scaled for different load ratings - Sonnax's identification guide for this family covers both Series together for exactly this reason. Starting with the 2010 model year, Allison moved the accumulator plumbing internal on this casting, eliminating the external transfer tubes that ran on the 2004-2009 1-tube and 2-tube versions before it. The valve body itself is still the hydraulic brain of the transmission: it routes line pressure through precision bores and spool valves to apply each clutch and band, and the 7 solenoids on this unit are what the TCM fires to time every shift and apply the torque converter clutch.
Pull codes and note which shift is affected before spending anything - Sonnax ties a sticking E-shift valve to P0872 and a failsafe condition, and worn F-trim sleeves to P0741 and torque converter clutch surge, so the stored code narrows down whether this is a valve body problem or something else on the truck. Our Allison valve body problems and testing guide covers the hydraulic checks that apply across the 1000/2000 family, and our torque converter shudder guide covers the separate but related TCC complaint that can mimic a valve body fault.
This unit is built for the 2010-and-up Allison 2000 - the no-tubes 7-solenoid casting shared with the Allison 1000 Series pickup trucks of the same model years. It is not the same casting as the earlier 2006-2009 2-tube unit, so if your chassis is older than 2010 you want our 2006-2009 2-tube version instead. Confirm by checking whether your original valve body has the external tubes before ordering, or send us your chassis year and we will verify. The full Allison transmission parts collection covers everything else we stock across the 1000 and 2000 Series.
Drop the pan and filter at the same time as the valve body swap on these high-hour commercial units, since debris from a worn valve body circulates through the whole hydraulic circuit and will shorten the life of a new one. Torque the bolts in sequence to spec, and refill with TES 668 full synthetic ATF, Allison's current approved fluid across the 1000, 2000, 3000 and 4000 Series. If the chassis uses a push-button shift selector, check it for intermittent faults while the dash is apart, since a worn selector can mimic a transmission shift complaint, and a filter and gasket kit sized for the deep pan on these chassis is worth installing alongside the valve body. Clear codes and run the TCM's adaptive relearn once the swap is done.
| Transmission | Allison |
| Year Range | 2000 |
| Condition | Remanufactured / updated |
| Shipping | Ships from the USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The no-tubes casting is shared across the Allison 1000 (2500/3500 HD pickups) and Allison 2000 (medium-duty Kodiak, TopKick and 3500 HD chassis) for 2010 and later. Order this 2000-badged listing for the heavier-duty commercial application; the 1000-badged listing is the same casting for a pickup truck.
Harsh or flared shifts under load, slipping or hunting between gears, torque converter clutch shudder while towing, and limp mode with a stored solenoid, pressure or ratio code.
No - 2008-2009 trucks use the earlier 2-tube casting. Order our 2006-2009 7-solenoid, 2-tube version instead, or send your chassis year if you are not sure which casting you have.
TES 668 full synthetic ATF, Allison's current approved fluid across the 1000, 2000, 3000 and 4000 Series.
Yes - clear codes and run the TCM's adaptive relearn so clutch fill and shift pressure are retimed against the new valve body instead of the worn one it had adapted to.
They share a control platform and valve body castings; the 2000 Series is built for the heavier-duty, higher-GVWR chassis like Kodiak and TopKick cab-and-chassis trucks, while the 1000 Series covers the 2500/3500 HD pickups.
