4L60E Solenoid Kit 1993-05, new and ready to install. Fits the 4L60E. Ships fast from the USA.
A 4L60E that suddenly starts out in second, holds one gear, skips straight to third, or will not lock the converter on the highway is very often an electrical problem, not a burnt transmission. This new GM solenoid kit covers the long 1993-2005 run of the 4L60E, the years it sat behind Silverado and Sierra 1500s, Tahoes, Yukons and Suburbans, S10 and Sonoma pickups, Blazers, Camaros and Corvettes. At $134.70 with a 1-year warranty, it lets you renew the solenoids on the valve body for far less than a rebuild, provided testing shows the solenoids are the actual fault.
The 4L60E chooses gears with two on/off shift solenoids. Solenoid A controls the 1-2 shift valve and solenoid B the 2-3 shift valve, and the on/off pattern of the pair gives the four forward gears. ATRA's solenoid application chart lists that pattern as ON/ON for first, OFF/ON for second, OFF/OFF for third and ON/OFF for fourth. Around them sit the pressure control solenoid that sets line pressure, the converter clutch solenoids, and the 3-2 downshift solenoid. All of them are fed regulated oil from the AFL valve, so when a coil goes open or a ball seat leaks, the valve it controls stays in the wrong position and the computer falls back to a default gear.
Put a meter on the case connector before you drop the pan. ATRA's bulletin on 4L60E solenoid resistances lists the shift solenoids at 20-40 ohms and the pressure control solenoid at 3.5-8.0 ohms, measured at specific connector pins. A reading far outside the range points to the solenoid or the internal harness. If every circuit reads correctly but codes keep returning, check the terminal crimps and the connector itself, because ATRA documented a poor crimp on one circuit setting P0740, P0753, P0758 and P0785 all at once. Our 4L60E shift solenoid symptoms and testing guide walks through the full test, and the P0753 and P0758 guide covers the A and B circuits in detail. Good electrical readings with continued shift problems mean worn valve body bores, which new solenoids will not cure.
The 1993-05 span is wide, and the 4L60E did not stay the same electrically through it. The 1993-1994 units used a PWM 3-2 downshift solenoid and only an on/off TCC solenoid. GM added a second, PWM converter clutch solenoid in 1995, and switched the 3-2 solenoid to an on/off type in 1996. That layout then stayed in place through 2005, and the 2006 units added an input speed sensor with a revised internal harness. In practice this kit lines up best with 1996-2005 transmissions; on a 1993-1995 unit, compare each solenoid in the photo with what is in your valve body before you order. Match the connector shapes and solenoid count, or send us your year and VIN and we will confirm the fit. Year-specific alternatives include the 1993-2002 solenoid kit, and every version we carry is on the 4L60E parts page.
Drain the pan, pull the filter and inspect the magnet. Heavy friction debris means the 3-4 clutch or another pack is already damaged, and solenoids alone will not fix it. Disconnect the internal harness from each solenoid and the case connector, then remove the solenoids one at a time so nothing goes back in the wrong bore. Lube every new O-ring with ATF and seat each solenoid by hand before installing its retainer or bolt. If the old harness is brittle or the connector shows fluid wicking, replace it now with the 1993-2002 internal harness with TCC solenoid on earlier trucks. Install a new filter and pan gasket, refill with Dexron VI, set the level hot, clear codes and reset adapts so the computer relearns shift pressure. A solenoid and filter service kit is the bundled route if you want the filter in the same box.
| Fits | 4L60E 1993-05 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Possibly, but check first. 1993-1994 units used a PWM 3-2 solenoid and had no PWM converter clutch solenoid, so compare the solenoids in the photo with yours or send us your VIN before ordering.
Solenoid circuit and performance codes such as P0753 and P0758 for the shift solenoids, P0785 for the 3-2 solenoid, P0740 for the converter clutch and P0748 for pressure control, once wiring has been ruled out.
No. The solenoids are serviced with the pan dropped and the valve body in place, which is why a solenoid kit is a good first repair on a 4L60E.
If the harness insulation is hard or cracked, or the case connector shows fluid wicking, replace it at the same time. Many intermittent solenoid codes come from the harness, not the solenoid.
Refill with Dexron VI, set the level with the fluid hot, clear codes and reset the transmission adapts with a scan tool, then road test through all four gears.
