4L60E Tcc Solenoid 2003-2008, remanufactured and ready to install. Fits the 4L60E. Ships fast from the USA.
A 2003-2008 Silverado, Sierra, Tahoe, Yukon or Suburban that shudders like it is driving over rumble strips at 45 mph, will not hold lockup on the highway, or keeps setting P0741 has a torque converter clutch control problem. Sometimes that is one solenoid. On a high-mileage 4L60E it is just as often the valve body bores the solenoid works through. This listing is named for the TCC solenoid, but the photo shows a remanufactured late 4L60E valve body with the TCC PWM solenoid and the other solenoids in place, covered by a 1-year warranty. It is the part to buy when you want the whole lockup control circuit renewed rather than one piece of it.
Two solenoids share the job. The on/off TCC enable solenoid, which lives on the internal wiring harness, opens the apply circuit when the computer decides conditions are right. The TCC PWM solenoid on the valve body then pulses oil to the TCC regulator valve so the converter clutch comes on smoothly instead of all at once. Sonnax's identification guide lists the 2003-2008 valve body with a gray plastic PWM TCC solenoid of 10 to 15 ohms, a white on/off 3-2 control solenoid, and a casting with TCC annular exhaust ports on top and bottom. The PWM solenoid is fed by the AFL circuit, so a worn AFL bore can starve it and look like a solenoid failure.
Separate electrical from hydraulic first. With a scan tool, watch TCC duty cycle and slip speed together. If the computer commands full apply and slip stays high, the electrical side is doing its job and the fault is in oil control or in the converter clutch lining itself. Sonnax recommends vacuum testing 4L60-E family valve bodies, because bore wear is common and testing finds it without guessing. A valve body that fails the TCC regulator or AFL bore tests is exactly what this assembly replaces. If instead the scan tool reports a circuit fault such as P0740, start at the case connector and harness. ATRA Bulletin 583 documents a single bad crimp setting P0740 alongside several other solenoid codes. Our TCC solenoid and P0740 guide walks through both paths.
Listed for the 2003-2008 4L60E in GM full-size trucks and SUVs. Sonnax places 2003-2008 on its own casting with the late EPC solenoid, separate from the 2000-2002 annular-lockup body and from the Colorado and Hummer H3 casting. Compare the solenoid layout, connector shapes and casting details in the photo with your old valve body, or send us the year and VIN and we will verify it. The rest of our late-model parts are on the 4L60E collection page.
| Fits | 4L60E 2003-2008 |
| Part type | Tcc Solenoid |
| Condition | Remanufactured |
| 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.
No. The photo shows a complete remanufactured 2003-2008 style 4L60E valve body with the TCC PWM solenoid and the other valve body solenoids installed. Contact us if you want the contents confirmed before ordering.
That solenoid is part of the internal wiring harness, not the valve body. If your harness is original, replace it at the same time.
It will if the slip comes from the valve body, such as a worn TCC regulator or AFL bore or a weak PWM solenoid. If the converter clutch lining is worn out, the converter itself needs service.
No. Sonnax lists 2000-2002 on a different casting with the early EPC solenoid. This listing is for 2003-2008.
Dexron VI. Check the level hot after the road test, since the new filter and valve body take up some fluid.
