Five remanufactured solenoids (EPC, 1-2/2-3 shift A and B, 3-2 downshift, TCC PWM) to renew the electrical side of a 1996-2002 GM 4L60E valve body.
Owners of 1996-2002 GM vehicles with the 4L60E, from Astro and Safari vans to early Escalades and the first Avalanche, often end up with a valve body that has covered a lot of miles on its original solenoids. This remanufactured five-piece kit replaces every solenoid on the early-style valve body in one pass: the EPC pressure control force motor, shift solenoids A and B, the 3-2 downshift solenoid and the TCC PWM solenoid. It is aimed at the buyer who has a shift or lockup code, has already checked the wiring, and would rather not drop the pan twice.
On these years the computer controls the 4L60E entirely through the valve body. Shift solenoids A and B open and close in combination to pick first through fourth gear. The EPC force motor is a variable solenoid that regulates line pressure, so it controls how firm or soft every shift feels and how hard the clutches are held. The 3-2 solenoid manages the handoff on part-throttle and kickdown downshifts, and the TCC PWM solenoid pulses the converter clutch on gradually instead of locking it abruptly. Every one of them sits in the same fluid, sees the same heat and catches the same clutch debris, which is why one failure on an older unit tends to be followed by another.
Pull codes first and note whether they are circuit codes or performance codes. Circuit codes point to the electrical path, so check the case connector and terminals; ATRA traced a run of P0740, P0753, P0758, P0785 and P1860 codes on these years to a poor crimp in the internal harness, not to the solenoids. Then measure resistance through the case connector: ATRA lists the shift solenoids at 20-40 ohms and the pressure control solenoid at 3.5-8.0 ohms. Performance or slip codes with good readings call for a closer look at pressure and the valve body. Our EPC solenoid function and failure guide and the 3-2 downshift solenoid and P0785 guide both cover the tests step by step.
This kit fits the 1996-2002 solenoid layout. Listed applications include the 1996 Cadillac Brougham and limousine with the 4.9L and 5.7L V8, 1999-2002 Escalade, ESV and EXT with the 5.3L, 5.7L and 6.0L, 1996-2002 Chevrolet Astro and GMC Safari with the 4.3L V6, and 2001-2002 Avalanche with the 5.3L. The same parts suit 4L65E and early 4L70E valve bodies that share this layout. 2003-and-later units moved to a different EPC and TCC arrangement and will not take these parts, and 1993-1995 units should be compared against the photos before ordering. If you are unsure, send us the year and VIN. Shop the rest of the lineup on our 4L60E collection.
These are remanufactured solenoids that are function tested before shipping and may show light surface wear.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. This kit is for the 1996-2002 solenoid layout. 2003 and later 4L60E units use a different EPC and TCC arrangement and need a late-style kit. The 2001-2002 Avalanche 5.3L is a listed fit.
The EPC pressure control solenoid is the most common electrical cause of harsh or soft shifts on a 4L60E, and it often sets P0748. Check wiring and resistance first, then replace it along with the rest of the set if the unit has high mileage.
No. With the pan and filter off, all five solenoids can be replaced with the valve body still bolted in. Remove it only if you are also checking or repairing worn bores.
They are remanufactured solenoids that are function tested before shipping. They may show light surface wear from their earlier service.
Dexron VI. It replaces the Dexron III these vehicles were filled with when new and is fully compatible.
