6T40 Pressure Control Solenoid, remanufactured and ready to install. Fits the 6T40. Ships fast from the USA.
Searching for a 6T40 pressure control solenoid usually starts with a Chevrolet Cruze, Malibu, Equinox or Sonic, a Buick Regal, Verano or Encore, or a GMC Terrain that suddenly lost a group of gears: no reverse with no 3rd or 5th, no 2nd and 6th, or a harsh bang into drive. GM does not sell the individual pressure control solenoids for this transmission as service parts. They live inside the control solenoid valve assembly, the unit GM calls the TEHCM, which bolts to the valve body and also carries the transmission control module. This listing is that assembly, remanufactured: the solenoid plate with its full set of solenoids and the module housing, as shown in the photo.
The 6T40 and 6T45 are clutch-to-clutch six-speeds, so there are no shift valves doing the work on their own. Every shift is the module ramping current to one solenoid while it lowers current to another. The assembly holds six variable pressure control solenoids and one on/off shift solenoid. One sets line pressure through the pressure regulator valve, one controls converter clutch apply, and the other four each feed a clutch regulator valve: 3-5-R, R-1/4-5-6, 2-6 and 1-2-3-4. Some are normally high, meaning full pressure with low current, and some are normally low. GM changed two of them between generations: on Gen 2 units PCS2 (3-5-R) became normally low and PCS5 (1-2-3-4) became normally high, and both moved position on the plate. That is why a Gen 1 and Gen 2 assembly will not swap.
GM's PI1131 lists exactly those four missing-gear patterns on 2011 Cruze, Equinox, Malibu, LaCrosse, Regal and Terrain and traces them to a non-functioning pressure control solenoid inside the TEHCM. Note that a bad solenoid takes out one clutch circuit. If you have lost gears from two different groups at once, look for something else first.
Pull the codes and note which gears are missing, then map them to the clutch circuit. Check fluid level at the correct temperature, because a low unit can mimic a solenoid failure, and do not condemn the transmission because the fluid looks dark. GM notes this fluid darkens from rust inhibitors used at assembly. With the assembly out, each pressure control solenoid should read 3-5 ohms and the shift solenoid 16-20 ohms. Remove a solenoid before measuring it, and never put 12 volts across a pressure control solenoid. Our 6T40 shift solenoid symptoms guide walks through the full test, and the 6T40 common problems guide covers the 3-5-R wave plate failure. A broken wave plate also kills reverse, 3rd and 5th, so rule it out before replacing electronics.
This assembly is listed for the 6T40 family, which GM also badged 6T45 for higher-torque applications, from 2008 on: Cruze, Malibu, Equinox, Sonic, Regal, Verano, Encore and Terrain among others. Generation matters more than model year. Read the eighth digit of the ID on your TEHCM: 1, 2 or 3 is Gen 1, while B, C or D is Gen 2. GM moved most of these vehicles to Gen 2 for 2012, but the 2012 Cruze and Sonic 1.8L, the 2012 Captiva Sport 3.0L and the Orlando stayed on Gen 1. Send us that digit or your VIN before ordering and we will confirm the match.
Because the control module is part of this assembly, it has to be programmed to the vehicle after installation with a GM-capable scan tool. Plan for that before the car leaves the lift. Drain the pan, and since it is off anyway, fit a new filter and gasket from a 6T40/6T45 filter and pan gasket kit. Unbolt the assembly from the valve body, and keep the valve body clean while it is exposed. If the bores are worn, a new solenoid body will still shift poorly, so consider a 6T45 valve body on high-mileage Gen 2 units. Refill with Dexron VI only and set the level hot at the check plug. After programming, clear adapts and let the module relearn over the first several drive cycles. If you only need to replace individual solenoids in a good assembly, the 6T40 solenoid kit is the cheaper route and needs no programming.
| Fits | 6T40 |
| Part type | Pressure Control 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.
GM services them only as the control solenoid valve assembly with the TCM. Aftermarket solenoid sets exist, and swapping solenoids into your original assembly avoids reprogramming, but if the module, connector or plate is damaged you need the complete assembly like this one.
Yes. The transmission control module is built into the assembly, so it must be programmed to your vehicle with a GM-capable scan tool, then the shift adapts relearned by driving.
No. Gen 2 relocated and reversed the logic of two solenoids and removed the pressure switches, and the valve body changed with it. Read the eighth digit on your TEHCM ID (1, 2, 3 for Gen 1; B, C, D for Gen 2) or send us your VIN.
Both can cause it. Check solenoid resistance and the 3-5-R circuit first; if the solenoid tests good, a broken 3-5-R wave plate is the usual mechanical cause and needs the transmission opened.
Dexron VI. Set the level with the engine running and the fluid at operating temperature using the check plug, not by a measured quantity alone.
