6T45 Tcc Solenoid, remanufactured and ready to install. Fits the 6T45. Ships fast from the USA.
A shudder that feels like driving over rumble strips between about 40 and 60 mph, a tach that sits higher than it used to at highway speed, or a torque converter clutch code on a 2.4L Malibu, Equinox, Terrain or Captiva Sport all lead buyers to the 6T45 TCC solenoid. On this transmission the TCC solenoid is not a loose plug-in part; it lives on the solenoid body with the rest of the shift and pressure solenoids. This listing is that solenoid body, remanufactured, with the TCC solenoid and the other six already installed as shown in the photo.
The torque converter clutch locks the engine to the transmission input at cruise so the converter stops slipping and wasting fuel. GEARS Magazine describes the 6T40/6T45 TCC pressure control solenoid as normally low: with little current it sends almost no oil to the TCC control and regulator valves, and as the computer raises current it feeds a controlled flow that applies the converter clutch gradually. That controlled slip is what makes lockup smooth. If the solenoid sticks, leaks, or its screen clogs, apply pressure becomes uneven and the clutch grabs and releases rapidly, which is the shudder you feel. The variable solenoids on this body should read 3-5 ohms.
Watch TCC commanded pressure against TCC slip speed on a scan tool during a steady cruise. If the computer commands apply and slip stays high, the circuit is not holding. Run the solenoid cleaning routine first, since GEARS notes debris can make a good solenoid act bad. Then check the fluid: old or low Dexron VI is a common cause of converter shudder on its own. A worn converter, or a leak at the converter seal that GM addressed in PI0950 for these transmissions, can also cause lockup complaints that a solenoid will not cure. Our 6T40 and 6T45 common problems guide covers converter and lockup faults, and the fluid change guide explains what a proper service involves.
This solenoid body is listed for the 6T45 and is catalogued across the 6T30, 6T40, 6T45 and 6T50, with applications including the 2.4L Malibu, Equinox, Terrain and Captiva Sport. The TCC solenoid itself kept the same function and location in Gen 2, but the body it sits on did not: GEARS notes PCS2 and PCS5 moved for Gen 2, and GM's 2012 changeover removed the pressure switches. That makes the body generation-specific. Check the eighth digit of your TEHCM ID (1, 2 or 3 for Gen 1; B, C or D for Gen 2) and send it with your year and VIN before ordering. Smaller 6T40 cars such as the Cruze have their own listing, the 6T40 TCC solenoid.
| Fits | 6T45 |
| Part type | Tcc Solenoid |
| Condition | Remanufactured |
| 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.
No. On the 6T45 the TCC solenoid is mounted on the solenoid body, and this part is the body with the TCC solenoid and the other six solenoids installed, as pictured.
Yes. Fluid condition, a worn converter clutch, or a converter seal leak can all cause shudder. Check scan data and fluid before replacing parts.
It is listed for the 6T45 behind the 2.4L. Send your TEHCM ID and VIN so we can confirm Gen 1 or Gen 2 before it ships.
Not if you keep your original TEHCM. Clear the adaptive values and let the computer relearn lockup and shifts.
Dexron VI. Check the level hot at the level set plug; an overfilled unit can overheat and set P0218.
