4L60E Pressure Control Solenoid 1993-02, new and ready to install. Fits the 4L60E. Ships fast from the USA.
If your 1993-2002 Silverado, Sierra, Tahoe, Yukon, Suburban, S10, Blazer, Sonoma, Camaro or Corvette bangs into second, flares between gears, or has a check engine light with code P0748, the pressure control solenoid is one of the first parts to look at. This is a new OEM-brand EPC solenoid listed for the early 4L60E years, 1993 through 2002, with a 1-year warranty.
The 4L60E has no throttle valve cable. Line pressure is set electronically, and this solenoid is the part that does it. The computer sends it a variable current, and the solenoid converts that current into a signal pressure that acts on the boost valve and pressure regulator. The relationship is inverse: high current means low line pressure, low current means high line pressure. Gears Magazine documents commanded current of roughly 0.9 to 1.1 amps at idle, dropping toward zero at wide-open throttle, which is why a solenoid that sticks or loses its calibration shows up as shift feel that no longer matches what your foot is doing. Every clutch and band in the unit is applied with whatever pressure this one part allows.
Do not condemn the solenoid off the scan tool alone. The commanded amperage PID shows what the computer wants, not what the solenoid is actually doing. ATRA Technical Bulletin 1345, written for the 1993-1996 years, shows how to read real current with a meter in series or an amp clamp and compare it to the desired value. ATRA Bulletin 269 gives the case connector check: pins C and D should read about 3.5 to 8.0 ohms through the harness. Then put a gauge on the line pressure port. If pressure is low with good current, the problem is more likely a worn boost valve or pressure regulator bore than the solenoid. Our EPC solenoid function and failure guide covers the full test, and the 4L60E line pressure specs page has the numbers to compare against. If codes only set during cranking, check the battery and cables first; Sonnax traces that pattern to voltage falling under about 10.5 volts.
This listing covers the 4L60E from 1993 to 2002. That range takes in the full-size GM trucks and SUVs, the S10 and Sonoma, Blazer and Jimmy, and the F-body and Corvette cars that used the 4L60E in those years. GM revised the solenoid set around the 2003 model year, which is why our catalog sells separate 2004-and-later pressure control solenoids. Compare the connector and body shape in the photos with the solenoid on your valve body, check the GM number if yours is legible, or send us your year and VIN and we will confirm it. The 4L60E parts page lists every year range we carry.
| Fits | 4L60E 1993-02 |
| Part type | Pressure Control Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
This listing is for the 1993-2002 years. GM changed the solenoid set around 2003, so later trucks should use one of our 2003 or 2004-and-later versions. If you are not sure which year your transmission is, send us your VIN.
It does when the solenoid is the cause. Confirm it first with a line pressure gauge and a current reading. If current is correct but pressure is still off, the boost valve or pressure regulator bore in the pump is the more likely problem.
ATRA lists about 3.5 to 8.0 ohms across pins C and D at the case connector. The solenoid manufacturer's instructions list 3.5 to 4.66 ohms measured directly at the solenoid.
Use Dexron VI automatic transmission fluid. It is the current GM service fill for the 4L60E and is backward compatible with the earlier Dexron grades these trucks shipped with.
At minimum a new pan filter and gasket. Inspect the solenoid bore and O-rings while it is out, and if the fluid is dark or full of material, consider having the valve body checked before you put it back together.
