4L60E Tcc Solenoid 2003-2007, new and ready to install. Fits the 4L60E. Ships fast from the USA.
If your 2003-2007 Silverado 1500, Sierra 1500, Tahoe, Yukon or Suburban cruises at the highway with the tach sitting a few hundred RPM higher than it used to, shudders as it tries to lock the converter, or has a P0740 stored, the torque converter clutch circuit inside the pan is where to look. This listing is filed as a TCC solenoid, but look closely at the photo: it is a full electrical service package for the 2003-and-later 4L60E. You get the internal harness with the on/off TCC solenoid on it, the pressure switch manifold, the shift solenoids, the 3-2 control solenoid, the pressure control solenoid, the TCC PWM solenoid, a new filter and a cork pan gasket. For one price you renew everything electrical that a lockup problem can trace to, plus the service parts the job needs anyway.
Lockup in this transmission is a two-solenoid job. The on/off TCC solenoid, which is molded into the internal harness on the later units, opens the converter clutch circuit once the PCM sees the right speed, throttle and temperature. The TCC PWM solenoid then ramps apply pressure up so the clutch engages without a bump. Both run on regulated oil from the actuator feed limit circuit, and both reach the PCM through the same harness and case pass-through connector. That shared path is the reason a single cracked wire or loose terminal can look exactly like a dead solenoid, and why replacing the harness and solenoids as a set is the cleaner repair once a truck has a few hundred thousand heat cycles on it.
A scan tool tells you a lot here. Watch commanded TCC against actual slip speed: if the PCM is commanding lockup and slip stays high, the electrical side may be fine and the fault is hydraulic. Worn bores in the TCC regulator and isolator area of the valve body are a common cause of P0741 slip on this family, and Sonnax recommends vacuum testing those bores rather than guessing. In that case the TCC regulator and isolator valve kit is the part you need, not solenoids. If the PCM reports a circuit fault instead, unplug the case connector, check for fluid in it, and measure the circuits while flexing the wiring. Our P0740 and TCC solenoid guide walks through both paths, and the 4L60E common problems article covers what else wears out alongside it.
The listing covers the GM 4L60E from 2003 through 2007. The 2003 model year is the dividing line: earlier transmissions use a different harness, case connector and TCC solenoid, and nothing in this package bolts into a 1993-2002 unit. GM also made running changes inside the 2003-2007 window, so lay the photo next to your valve body and compare the connector shapes, the pressure switch manifold and the harness routing before you install. If you are unsure, send us the year and VIN and we will check it. Every part we stock for this transmission is on the 4L60E parts page.
| Fits | 4L60E 2003-2007 |
| Part type | Tcc Solenoid |
| 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.
No. Based on the photo it is the complete 2003-up electrical set: internal harness with the on/off TCC solenoid, pressure switch manifold, shift, 3-2, pressure control and TCC PWM solenoids, plus a filter and pan gasket.
No. GM changed the harness, case connector and TCC solenoid for the 2003 model year, so 1993-2002 transmissions need the earlier parts.
Possibly not. P0741 means the converter clutch is slipping, which on a 4L60E is often worn valve body bores or a worn converter clutch. Rule those out before replacing solenoids.
Dexron VI. Check the level hot after the road test, since the new filter holds some fluid and the level will drop after the first run.
Clear the stored codes once everything is connected. Unplugging the case connector with the key on sets codes of its own, so clear them before you judge the repair.
