46RE Tcc Solenoid 2000, new and ready to install. Fits the 46RE. Ships fast from the USA.
Model year 2000 is where the 46RE solenoid harness changed, and buying the wrong one is the most common mistake on these trucks. This is the 2000-and-later overdrive and lock-up solenoid assembly with its internal harness, listed as Mopar 52118500AB with interchange numbers 12420C, TCS51 and 22954C. It fits A500 and A518 transmissions, which covers the 42RE, 44RE, 46RE and 47RE, and it is the part to look at when a 2000-up Ram 1500, Dakota, Durango or Ram Van stays in third, cruises with the converter unlocked, or flashes the check engine light with P1740.
In the 46RE the PCM controls only two things directly besides governor pressure: the 3-4 shift and converter lockup. This bracket carries both solenoids. The overdrive solenoid exists solely to make the 3-4 upshift. The torque converter clutch solenoid reverses converter feed so the lockup clutch applies once the PCM sees the right speed, throttle and temperature. Power comes in through pin 1 of the round 8-pin case plug, and the PCM grounds each solenoid to turn it on. What changed for 2000 is the sensor side of the harness: the later governor pressure sensor uses a rectangular plastic connector, and this harness is made to mate with it.
Start electrical. ATSG gives 25 to 40 ohms for each of the overdrive and TCC solenoids, so a quick ohmmeter check at the case connector tells you whether a coil is open or shorted. Then confirm system voltage at pin 1; GEARS documents that losing that feed sends the unit into limp mode. If both coils read in range and the code keeps coming back, think hydraulic before buying anything. Transmission Digest traced P1740 on some 2000-01 Ram Vans, Dakotas, Ram pickups and Durangos with the 46RE or 47RE to a reducing-pressure exhaust orifice in the boost valve cover plate that is too small, delaying the pressure rise lockup needs. The published fix is to open that orifice to 0.069 inch or fit revised cover plate 04617012. Sonnax adds that a restricted cooler is the most frequent cause of 1740 codes on this family. Our 46RE 3-4 clutch failure guide covers the boost valve fix and overdrive slip, and the shift solenoid testing guide covers the electrical checks.
Listed for 2000-and-later A500 and A518 units (42RE, 44RE, 46RE, 47RE) with the round 8-pin case plug. Because the harness has to plug into the late square plastic governor pressure sensor, confirm your sensor before ordering: a 2000 truck should have the late sensor from the factory, but a rebuilt or swapped valve body can change that. If your sensor is the round metal type, you need the 1996-1999 harness. Send us your year and VIN if you are not sure, and browse the rest of the 46RE parts collection for matching service parts.
| Fits | 46RE 2000 |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | OEM |
| Reference | A518 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Not as a direct plug-in. 1996-1999 units use the round metal governor pressure sensor, and this harness is made for the later square plastic sensor. Order the 1996-1999 version or send us your VIN.
It is a TCC or overdrive solenoid performance fault. Besides the solenoid itself, Transmission Digest ties it on many 2000-01 trucks to an undersized orifice in the boost valve cover plate, and Sonnax lists cooler restriction as the leading cause.
No. This listing is the overdrive and lockup solenoid assembly with harness. For the governor parts as well, choose the 2000-up TCC solenoid kit.
Measure each solenoid at the case connector; ATSG lists 25 to 40 ohms. Then check for voltage at pin 1.
Use ATF+4 only. No programming or adaptive relearn is required; clear codes and road test.
