Replaces every solenoid, the pressure switch, and the internal harness on a 1993-2002 GM 4L60E, with a new filter and pan gasket for the same job.
Owners of a 1993-2002 C/K 1500 or Silverado, Sierra, Tahoe, Yukon, Suburban, S10, Blazer, Sonoma, Camaro or Corvette usually land here after the same run of trouble: a stored P0751 or P0756, a P0748 pressure control fault, a converter that slips or never locks, or a truck that pulls away in the wrong gear. On a high-mileage early 4L60E those complaints rarely stop at one solenoid. This kit replaces the whole electrical side of the valve body, adds the pressure switch and the internal wiring harness, and includes a new filter and pan gasket so nothing has to be ordered separately for the pan drop.
The 4L60E shifts on two on/off solenoids. ATRA's GEARS solenoid chart lists it as a Type 1 unit: shift solenoid A (1-2) and shift solenoid B (2-3) are both on in first, B alone in second, both off in third and A alone in fourth. If either one sticks, the computer asks for a gear and the hydraulics deliver a different one. The EPC solenoid sets line pressure and therefore shift feel, the TCC and PWM solenoids apply and smooth the converter clutch, and the 3-2 solenoid times the downshift into third. The pressure switch reports which range the manual valve is in, so a leaking switch can make good solenoids look bad. All of them, plus the harness that links them to the case connector, are in this box.
Note that 1993-1995 trucks predate OBD-II and report two-digit trouble codes instead of P-codes, so the code numbers above apply to 1996-2002 units.
Measure before you drain. ATRA's 1995 resistance bulletin gives roughly 20-40 ohms for each shift solenoid and 3.5-8.0 ohms for the pressure control solenoid at the case connector, and our 4L60E shift solenoid testing guide walks through the pin-by-pin checks. If the line pressure complaint is the main symptom, read the P0748 pressure control solenoid guide first. Keep the valve body in mind too: Transmission Digest documented a 1993 C1500 that kept starting in second after the solenoids and then a full valve body were replaced, so if the electrical side tests clean, vacuum test the bores rather than throwing more parts at it.
The listing covers GM 4L60E and 4L65E (RPO M30 and M32) for 1993-2002 and cross-references GM 24230298, 24227747, 24227792, 24215111, 8683187, 8677314 and 24208576. That is a ten-year span, and the electrical package did not stay identical across it. The earliest trucks used a simpler converter clutch apply, so a 1993-1994 unit may not use every piece in the kit. The listing also states that 2003-up transmissions use a different harness and pressure switch, so this is not the kit for a 2003 or newer truck. Compare your connectors and pressure switch to the photos, or send us your year and VIN and we will check it. Everything else for this transmission is on the 4L60E parts page.
If the pan is full of debris, the solenoids are not the root problem. A remanufactured 2001-2002 valve body covers bore wear on late-range trucks, and the Raybestos high energy 3-4 clutch pack addresses the burned 3-4 clutches this transmission is known for.
| Fits | GM 4L60E / 4L65E (M30, M32) 1993-2002 |
| Solenoids | A shift, B shift, 3-2 downshift, EPC, PWM, TCC |
| Also includes | Pressure switch, internal wiring harness, filter, pan gasket |
| Replaces GM | 24230298, 24227747, 24227792, 24215111, 8683187, 8677314, 24208576 |
| Ships from | USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The listing is for 1993-2002 units and states that 2003-up transmissions use a different harness and pressure switch. Look at our 2003-2005 solenoid kits instead, or send us your year and VIN.
Possibly not. The earliest 4L60E units used a simpler converter clutch apply than later years, so some pieces may not have a home on your valve body. Compare your solenoids and connectors to the product photos before ordering.
The pressure switch tells the computer which range the manual valve is in. A leaking or failed switch sends the wrong signal and causes erratic shifts that look like a solenoid fault. Replacing it during the same pan drop removes it from the list of suspects.
ATRA's 4L60E bulletin lists about 20-40 ohms for each shift solenoid and 3.5-8.0 ohms for the pressure control solenoid, measured at specific case connector pins. Check readings with the transmission at normal temperature, since heat can expose a weak coil.
Use Dexron VI. Refill, start the engine, run through the gears and check the level at operating temperature before topping off.
Yes. Clear the codes and drive through every gear so shift adapts can relearn. Shifts can feel firm or soft for the first drive cycles until the computer adjusts to the new parts.
