The correct 4L60E valve body separator plate for 1996-2006 units, so your rebuild or shift-kit work seals and calibrates the way the factory intended.
A 1996-2006 4L60E behind a Silverado, Sierra, Tahoe, Suburban or Camaro that shifts soft, cross-leaks between circuits, or never feels right after a rebuild is often fighting a worn or wrong separator plate rather than bad clutches. This is the TransGo 46-PLT-96, the correct replacement plate for that model range, cut to the factory hole pattern so pressures land where they should.
The separator plate is the thin steel plate sandwiched between the valve body and the case, and every feed hole and orifice in it meters the fluid that fires each clutch and band on command from the shift and pressure control solenoids. On the 4L60E that hydraulic timing has to line up with the solenoids exactly, so a plate that is worn, blued from heat, or wallowed out around the check-ball seats causes soft or cross-leaking shifts no matter how good the rest of the rebuild is.
Pull the valve body and inspect the old plate for blued coloring, warping, or check-ball seats that have worn into ovals instead of round pockets - any of those means the plate is compromising the rebuild. Our 4L60E valve body rebuild walkthrough covers teardown and inspection in order, and if the symptoms point to low or erratic line pressure specifically, our 4L60E pressure regulator and boost valve guide covers the related bore wear that a plate alone will not fix.
This plate is cut for the 1996-2006 GM 4L60E behind small blocks in Silverados, Sierras, Tahoes, Suburbans and Camaros, and it is the plate TransGo specs for use with their reprogramming and shift-correction packages on this range. The 4L60E hole pattern changed across its full production run, so confirm your unit falls in 1996-2006 before ordering - for other years, see our 4L60E parts or send us your VIN.
Bolt the plate up with new valve body gaskets on both sides so you have a clean, square sealing surface instead of a warped one fighting the rest of the build. If the shift or pressure solenoids tested weak during teardown, replace them as a set with a 4L60E 5-piece solenoid kit rather than one at a time, and change the fluid and filter at the same time so debris from the old unit does not circulate through the new plate. Torque the valve body bolts in sequence and clear the adaptive memory after reassembly so the module relearns shift timing against the new hydraulics.
| Fits | GM 4L60E, 1996-2006 |
| Part number | TransGo 46-PLT-96 |
| Type | Valve body separator plate |
| Use | Rebuilds, resealing, and shift-kit installs |
| Country of origin | United States |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 1996-2006 GM 4L60E, including the Silverado, Sierra, Tahoe, Suburban and Camaro lineup. Confirm your unit falls in that range before ordering, since the 4L60E hole pattern changed across its full production run.
Soft or inconsistent shift feel, cross-leaks between circuits that should be isolated, and a shift kit or reprogramming package that never calibrates correctly even after the rest of the valve body is rebuilt.
TransGo specs this plate for use with their reprogramming and shift-correction packages on the 1996-2006 4L60E, so starting with a fresh, correctly orificed plate lets the calibration work do what it is supposed to.
Yes - bolt it up with new valve body gaskets on both sides. Reusing old gaskets against a fresh plate defeats the point of replacing it.
If they test weak during teardown, yes - replace them as a set rather than one at a time while the valve body is already apart.
