The transmission converter clutch is in the transmission's torque converter. If you experience symptoms or have trouble codes indicating a problem with your truck's TCC, the cause is more likely a malfunctioning TCC solenoid. The 4R100 automatic transmission in your 2001 Ford F-250 has a solenoid body instead of individual shift solenoids and a TCC solenoid. To replace a malfunctioning TCC solenoid, replace the solenoid body.
Park the truck on solid ground, set the parking brake and chock the rear wheels. Lift the front of the truck -- one side at a time -- and support it on jack stands under the frame rails behind the front wheels.
Find the solenoid body electrical connector on the passenger side of the transmission above the rear corner of the transmission pan. Disconnect the connector.
Position a drain pan under the transmission pan. Loosen, but do not remove, all the pan bolts. Remove the bolts across the rear of the pan. Remove the bolts on the sides of the pan -- one at a time and from alternating sides. As you remove the bolts, let the pan slowly sag away from the transmission and allow the fluid to drain. Once the fluid has drained completely, remove the rest of the bolts and remove the pan and gasket. Take care not to damage the gasket; it is reusable as long as it isn't damaged. Drag the drain pan -- slowly and with care not to slosh it -- out from under the truck.
Remove the filter and seal assembly by pulling and rotating the assembly as needed to disengage it from the bottom of the transmission. Make sure the seal comes off with the filter. If not, retrieve the seal from the pump bore with your finger or a small screwdriver. If using the screwdriver, take care not to scratch the pump bore.
Find the solenoid body on the passenger side inside the transmission. It has a plastic shield on the bottom. Remove the nine bolts and a nut from the solenoid body, using a socket and ratchet. Remove the solenoid body.
Install the new solenoid body and install the bolts and the nut finger tight. Starting from the center and working your way out to the ends, tighten the bolts and the nut to 80 to 100 inch-pounds, using an inch-pound torque wrench and socket.
Apply a thin coat of clean transmission fluid to the filter seal and then press the transmission filter and seal assembly into place.
Position the gasket on the transmission pan and hold the pan in place. Install the bolts and tighten them finger tight. Starting from the center and working your way out to the ends of the pan, tighten the bolts to 11 foot-pounds.
Connect the solenoid body electrical connector and then lower the truck to the ground. Remove the transmission dipstick and insert the funnel into the filler tube. Refill the transmission with 6.5 quarts of fluid through the funnel. Remove the funnel and reinsert the dipstick.
Start the truck and check for leaks. Put your foot on the brake pedal and move the gearshift into each gear, allowing each gear to engage before moving the shifter to the next gear. Put it back into "Park" and check the fluid level in the transmission. The level may show a little low; the fluid expands as it gets warm. Drive the truck approximately 20 miles, and recheck the fluid level. Add fluid as needed to bring the level to within the "Full" range.
