4T65E Tcc Solenoid 1993, new and ready to install. Fits the 4T65E. Ships fast from the USA.
If your Buick LeSabre, Century or Regal, Chevrolet Impala or Monte Carlo, or Pontiac Grand Prix has started to shudder at a steady 45 mph, runs a few hundred RPM higher on the highway than it used to, or has stored P0741, the torque converter clutch is not locking the way it should. This listing is a single new TCC lockup solenoid of the pulse-width-modulated (PWM) style with the round black connector. The listing covers a family of GM units starting in 1993, which is where the year in the title comes from; for the 4T65E specifically, the listing applies it to 1997-up. Its cross-reference number on the listing is 74418E. It is a lower-cost single-coil fix for a car whose other solenoids are still healthy, unlike our 1997-2002 4T65E solenoid master kit, which replaces the TCC, pressure control and both shift solenoids at once.
When the engine is warm and the car is holding a steady speed in third or fourth, the engine computer starts pulsing this solenoid. Each pulse lets oil past the solenoid seat to the converter clutch apply circuit, and because the signal is modulated rather than simply on or off, the computer can ramp the clutch on smoothly instead of slamming it. Once applied, the converter clutch ties the engine to the transmission input so nothing slips through the fluid. The computer checks the result by comparing engine speed with turbine speed. A solenoid that sticks, leaks past its seat or has a plugged screen leaves the clutch slipping, and slip that the computer can measure is what sets the code. The solenoid is fed through the same valve body oil as the rest of the controls, so Sonnax points out that a worn actuator feed limit (AFL) valve bore can starve it and produce the same P0741 even with a perfectly good coil.
Pull the codes and check the fluid first. Burnt fluid with friction material in the pan means the converter clutch lining or the clutch packs are already damaged and a solenoid alone will not cure it. If the fluid is clean, use a scan tool at a steady 50 mph and watch commanded TCC against slip speed: commanded on with slip that stays high points at the solenoid, its feed oil or the converter itself. Electrical codes deserve a wiring check before parts. Transmission Digest documented 2006-07 4T65E cars setting TCC circuit codes because a retaining clip chafed through the internal wire harness, and swapping the solenoid on those cars changes nothing. Our 4T65E common problems and diagnosis guide walks through separating a solenoid fault from valve body wear and clutch failure.
The listing applies this solenoid to the 4T65E from 1997 on, plus several other GM units that use the same round-connector PWM style. That covers the common 4T65E cars from 1997 through 2011, but GM changed internal harnesses and solenoid styles during the run, and some later units use a different TCC solenoid design. Compare the connector shape and the mounting of the solenoid in your valve body with the product photo, or send us your year and VIN and we will confirm before it ships. You can browse every part we stock for this transaxle on the 4T65E parts page.
The solenoid sits on the valve body behind the side cover, so expect to drain fluid and remove the side cover to reach it. Fit a new O-ring, make sure the inlet screen is clean, and inspect the TCC regulator and apply valve bores while the cover is off; scored bores leak apply oil and bring the shudder back. If the car also has soft or flared shifts with P1811, the 4T65E pressure control solenoid is the companion part to replace on the same job. Refill with Dexron VI; GM lists about 7.4 quarts for a 4T65E service in the Impala owner manual, with more needed if the converter was drained. Clear codes, then drive through several warm lockup cycles at steady speed to confirm the slip is gone. Background on pressure-related codes is in our 4T65E pressure control solenoid guide.
| Fits | 4T65E 1993 |
| Part type | Tcc 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.
The solenoid design was first used in 1993 on other GM transmissions such as the 4L60E. For the 4T65E the listing applies it to 1997 and later, so the 1993 date describes the solenoid family, not a 1993 4T65E.
It will if the solenoid is the cause. P0741 means the computer saw converter clutch slip, which can also come from a worn AFL or TCC valve bore or a damaged converter clutch. Check fluid condition and watch slip speed on a scan tool before buying.
No. This is a single TCC lockup solenoid. If your pressure control and shift solenoids are also original and the car has shift complaints, the 1997-2002 master solenoid kit replaces all of them in one job.
Dexron VI. It is back-compatible with the earlier Dexron III fill, so it is the correct fluid for every 4T65E year. A side cover service usually takes several quarts; check the level hot after the test drive.
There is no special relearn for the solenoid itself. Clear the codes and drive the car warm at steady highway speed several times so the computer can command lockup and confirm slip is within limits.
