All five electrical solenoids for a 1996-2002 GM 4L60E or 4L65E: 1-2 and 2-3 shift, 3-2 downshift, EPC pressure control and TCC/PWM lockup.
This new five-piece kit puts a fresh solenoid in every electrical position on a 1996-2002 GM 4L60E or 4L65E valve body. Owners usually land here because of a specific complaint: a Silverado or Tahoe that flares on the 1-2 shift, a 3-2 downshift that bangs on a coast-down, a check engine light with a shift solenoid or EPC code, or an RPM needle that never drops when the converter should lock. The kit includes the A (1-2) and B (2-3) shift solenoids, the 3-2 downshift solenoid, the EPC pressure control solenoid and the TCC/PWM lockup solenoid. The full set weighs about one pound and sells for $86.99, which is less than paying to drop the pan a second time when the next original solenoid gives up.
The A and B solenoids are simple on/off valves. The PCM switches them in combinations to select first through fourth, and with both off the transmission sits in third. The 3-2 downshift solenoid is a separate control the PCM uses to time the release of the 3-4 clutch against the 2-4 band apply when you drop from third to second. When it sticks or its circuit opens, the downshift either flares or binds, and the PCM can set P0785. The EPC solenoid controls line pressure across the whole shift schedule, and the TCC/PWM solenoid modulates converter clutch apply so lockup feels smooth instead of abrupt. All five sit on the same regulated AFL oil supply, which is why contamination or heat from one failure tends to wear the others at the same pace.
Several codes setting at once usually means a shared problem, not five bad parts. ATRA bulletin 1244 lists a wiring or connection fault as the most likely cause of limp mode with a group of solenoid codes on these units, so check the case connector and fuse feed before ordering. If you have a single 3-2 complaint, read our 3-2 downshift solenoid and P0785 guide. For a firm or soft shift with P0748, the EPC solenoid function and failure guide explains how to separate a tired solenoid from a pressure regulator problem.
Listed for the GM 4L60E and 4L65E from 1996 through 2002, which covers most Chevrolet and GMC full-size trucks and SUVs of that era along with vans and rear-drive cars that used this transmission. The listing notes that 2003 and later units use a different harness and solenoid style, so the build year matters more than the model name. Check the connector shape and the part numbers on your old solenoids against this set, or send us your year and VIN. A 2003-up owner should look at the 2003-2007 solenoid kit. All 4L60E parts are on the 4L60E collection page.
Drain the fluid and drop the pan, then remove the filter. Unplug the internal harness from each solenoid and remove them one at a time by their clips or bolts so nothing is mixed up. The EPC comes out after its bolt-on retainer is removed. Lube the new O-rings with ATF, push each solenoid straight in so the O-ring does not roll, and torque the retaining bolts to the factory spec. If the harness insulation is brittle or the connector locks are broken, replace it now. Fit a new filter and gasket, refill with Dexron VI, clear codes and road test through every shift, including a 3-2 coast-down. If the original complaint returns, the valve body is the next stop; the 1996-2002 valve body assembly with solenoids and harness replaces the whole hydraulic and electrical package for these years.
| Fits | GM 4L60E and 4L65E, 1996-2002 |
| Includes | A shift solenoid, B shift solenoid, 3-2 downshift solenoid, EPC pressure control solenoid, TCC/PWM solenoid |
| Weight | 1.03 lb |
| Condition | New |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Shift solenoid A (1-2), shift solenoid B (2-3), the 3-2 downshift solenoid, the EPC pressure control solenoid and the TCC/PWM lockup solenoid.
Many owners do. The solenoids share the same oil and the same mileage, and the pan has to come off either way. Replacing the set avoids a second teardown when the next one fails.
No. 2003 and later units use a different solenoid and harness style. Use the 2003-2007 kit, or send us your VIN if your truck was built near the changeover.
A flare or a harsh bump when the transmission drops from third to second, usually while slowing down or when you push the throttle to pass. P0785 often sets with it.
Use Dexron VI ATF. A pan drop drains only part of the fluid, so refill to the correct hot level on the dipstick instead of relying on a fixed quantity.
