4L60E Pressure Control Solenoid, new and ready to install. Fits the 4L60E. Ships fast from the USA.
A Chevrolet Silverado, Tahoe, Suburban, S10 or Camaro, or a GMC Sierra, Yukon or Sonoma, with a 4L60E that suddenly shifts like it was hit with a hammer, or one that has gone soft and lazy between gears, very often has a pressure control solenoid problem. So does a truck with P0748 stored. This is a new BorgWarner 4L60E pressure control solenoid, also called the EPC solenoid or force motor, with a 1-year warranty. It is the right page if you have already tested your old solenoid, or if you want a quality replacement while the pan is down for other work.
The 4L60E has no throttle valve cable telling the pump how hard to work. Instead, the computer sends this solenoid a variable current, and the solenoid converts that current into a control oil signal on the boost valve at the pressure regulator. The relationship runs backward from what most people expect: high current at idle gives low line pressure, and as current falls toward zero at wide-open throttle, pressure rises to its maximum. Because every clutch and the 2-4 band are applied with that line pressure, one weak or sticky solenoid changes the feel of every shift in every gear. That is the clue that separates an EPC fault from a single bad clutch or shift solenoid.
Start with the meter. ATRA Technical Bulletin 269 lists the pressure control solenoid on case connector pins C and D at 3.5-8.0 ohms. Unplug the harness by squeezing the two tabs and pulling straight up, not by prying, and measure across those pins. A reading far outside the range points at the solenoid or the internal harness. A good reading does not clear it, though, because a solenoid can pass the ohm test and still stick mechanically. The next step is a line pressure gauge: Teckpak-Fitzall's EPC instructions give 4L60E line pressure of 50-189 psi in Drive, Park or Neutral and 67-324 psi in Reverse, idle to wide open throttle. Low pressure with a good solenoid sends you toward a worn boost valve or pressure regulator instead. Our guides to 4L60E line pressure testing and diagnosing P0748 cover both tests step by step.
This solenoid fits the GM 4L60E, which ran in rear-drive Chevrolet and GMC trucks, vans, SUVs and performance cars from 1993 into the 2010s. The listing is not tied to a single year range, and GM made running changes over that time, so check the body, connector and retaining clip on your old solenoid against our photos before you order, or send us your year and VIN and we will confirm. If you would rather shop by year, we also stock the 1993-2002 pressure control solenoid and the 2004-and-later version, and everything else for this transmission is in our 4L60E parts collection.
The EPC solenoid sits on the valve body and is reachable once the pan and filter are off. Remove the retaining clip, pull the solenoid straight out and look at the bore it came from; scoring there will undo a new part. Replace the O-rings, reuse the original clip and bolt and tighten to factory spec. Refill with Dexron VI ATF and put in a new filter at the same time. After you reconnect the case connector, clear the codes it sets while unplugged, then confirm line pressure with a gauge. If the truck has high mileage and other solenoids are suspect, the 4L60E master solenoid kit replaces the EPC, TCC PWM and 3-2 solenoids in one job.
| Fits | 4L60E |
| Part type | Pressure Control Solenoid |
| Condition | New |
| Brand | BorgWarner |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for the 4L60E without a specific year range. GM changed details over the production run, so compare your old solenoid's body and connector to our photos or send your year and VIN and we will confirm.
ATRA Technical Bulletin 269 lists 3.5-8.0 ohms across case connector pins C and D. Teckpak-Fitzall gives 3.5-4.66 ohms measured directly at the solenoid.
A solenoid can stick even with good resistance. If line pressure is wrong with a known-good solenoid, look at the boost valve, pressure regulator valve and actuator feed limit valve in the pump and valve body.
Dexron VI ATF. It is the GM service fluid for the 4L60E and is backward-compatible with earlier Dexron specifications.
Clear the codes that set when the case connector was unplugged. On later vehicles, resetting transmission adapts with a scan tool and driving through all the shifts helps the computer adjust to the new solenoid.
