6T40 Shift Kit 2007, new and ready to install. Fits the 6T40. Ships fast from the USA.
Early Chevrolet Cruze, Malibu and other GM front-drivers with a first-generation 6T40 often come in with the same story: shifts that flare or feel soft, a converter clutch that slips, and a string of solenoid or gear ratio codes that keep coming back. This is the TransGo SK6T40-A SHIFT KIT valve body repair kit for Gen 1 units from 2007 on, the version with pressure switches on the control solenoid body. It installs with the transmission in the car.
The 6T40 shifts by solenoid, but every solenoid depends on a steady supply of oil. The actuator feed limit (AFL) valve is what keeps that supply steady, capping solenoid feed pressure regardless of line pressure. TransGo found that wear at the AFL valve is behind many Gen 1 complaints: when its bore wears, solenoid feed swings, clutch apply drifts and the result can be an erratic high-pressure condition that breaks parts. The kit attacks the problem in three places:
Confirm the generation first. Gen 1 units have pressure switches on the control solenoid valve body; GM removed them in the 2012 Gen 2 update, and this kit does not fit Gen 2. Check fluid level and condition, read codes, and clear adaptive values to see whether the complaint returns. If it does, a worn AFL or regulator bore is a strong suspect. Our 6T40 valve body symptoms guide covers how to test it, and the harsh shift causes guide helps rule out pump and calibration issues first.
This kit fits Gen 1 6T30, 6T40 and 6T45 transmissions from 2007 on, which in practice covers the earlier GM front-drivers such as 2008-2011 Malibu and early Cruze. Some 2012 vehicles still carried Gen 1 units, so check for the pressure switches or send us your year and VIN before ordering. If your unit is Gen 2, look at the 2013-2017 6T40 shift kit instead. A sibling listing for the same kit covering 2007-2012 is the 6T40 shift kit 2007-2012.
TransGo rates this as an experienced-technician job but it does not require removing the transmission. Drain the fluid, remove the side cover to reach the TEHCM and valve body, and follow the SK 6T40-A instructions step by step, keeping removed valves in order. Handle the TEHCM carefully and torque its bolts to spec. Refill with Dexron VI, check the level hot at the level set plug, then clear adapts and run the Service Fast Learn. If the clutches are already burned, the kit will not restore them; pair it with a 2008-2011 6T40 master rebuild kit. Filter and pan work can be covered with a 6T40 pan, filter and gasket kit.
| Fits | 6T40 2007 |
| Part type | Shift Kit |
| Condition | New |
| Brand | TransGo |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. TransGo states this kit fits Gen 1 units only, the ones with pressure switches on the control solenoid body. Gen 2 units need the 2013-2017 kit.
No. Per TransGo, transmission removal is not necessary. The valve body side of the unit is accessed with the transmission in the vehicle.
An actuator feed limit valve assembly, a new pressure regulator valve, and pressure switch repair parts for the TEHCM.
No. The kit corrects the hydraulic wear that burns clutches. If the frictions are already damaged, the unit needs a rebuild along with the shift kit.
Use Dexron VI, check the level hot at the level set plug, then clear adaptive values and run the Service Fast Learn with a scan tool.
