6T40 Solenoid Kit 2006-2011, remanufactured and ready to install. Fits the 6T40. Ships fast from the USA.
This listing covers the earliest stretch of GM's 6T40/6T45 production. It is a remanufactured seven-piece solenoid set listed for 2006-2011 applications such as the Buick LaCrosse and Regal 2.4L, Chevrolet Malibu 2.4L, Saturn Aura and Pontiac G6 2.4L. If one of these has a solenoid performance code, a stuck gear, or shifts that flare and bang without warning, start here, but read the fitment section closely, because early units have quirks later ones do not.
There are no shift bands and no row of separate shift solenoids on a 6T40. The control solenoid valve assembly, called the TEHCM, combines the transmission computer, the fluid temperature sensor and the solenoids in one module on the valve body. Line pressure is set by PCS1. Four more pressure control solenoids, PCS2 through PCS5, each feed one clutch regulator. A sixth variable bleed solenoid handles converter clutch apply, and SS1, an on/off valve, shifts the clutch select valve so one regulator can serve both the low/reverse and 4-5-6 clutches. On first-generation units the module also carried hydraulic pressure switches that report clutch apply back to the computer.
Early modules have a catch: P0873 and P0878 can come from a pressure switch rather than a solenoid. GEARS reports a high failure rate on the Gen 1 switches, including loose retaining rivets, and GM dropped them for Gen 2. Also, the scan-tool TEHCM performance test does not work on Gen 1 controls, so GM's PI0670A tells techs to inspect the valve body, pump, 3-5-R housing and piston before replacing the module. Resistance-check each solenoid and look hard at the 3-5-R clutch. Our 6T40 solenoid testing guide lists the specs, and the valve body symptoms article explains bore wear that mimics solenoid trouble.
The 2006 start year comes from this kit's broad application list, which includes markets outside North America. Our own application data for the 6T40/6T45 starts with 2008-model-year vehicles, so a 2006-2007 GM front-driver sold here almost certainly has a different transmission and this kit is not for it. V6 LaCrosse, Equinox and Terrain models generally run the 6T70 family and are also outside this fitment. The kit follows the Gen 2 solenoid pattern, and since GM introduced Gen 2 for the 2012 model year, most original 2008-2011 modules are Gen 1, where PCS2 and PCS5 operate opposite to Gen 2. Check the eighth digit of the TCM identifier: B, C or D is Gen 2, 1, 2 or 3 is Gen 1. Send us that ID or your VIN and we will confirm before it ships. The 7-piece 6T40 solenoid set for 2008-2011 is the alternative to compare against.
Disconnect the battery, remove the side cover and lift the TEHCM straight off its dowels. Inspect the harness for heat cracking and the pressure switches for loose rivets while it is out. Install new O-rings, return each solenoid to its original bore, and keep debris off the valve body. Refill with Dexron VI, set the level hot at the plug, clear adapts and road test. On a high-mileage early unit going into a full rebuild, add the 6T40 master rebuild kit 2008-2011 and check the 2007-2012 shift kit for regulator valve wear.
| Fits | 6T40 2006-2011 |
| Part type | Solenoid Kit |
| 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.
Almost certainly not. The 6T40/6T45 entered North American vehicles with the 2008 model year in our data; earlier LaCrosse models used different transmissions. The 2006 start year reflects applications sold outside North America.
It follows the Gen 2 solenoid pattern. Most original 2008-2011 modules are Gen 1, so read the eighth digit of the TCM ID on your TEHCM (B, C or D is Gen 2) or send us your VIN before ordering.
Not necessarily. On Gen 1 controls P0878 is a pressure switch 4 circuit code, and those switches had a high failure rate. It can also point at PCS5. Test both before replacing parts.
On a high-mileage early unit it is common practice, since the solenoids are the same age as the worn clutches. Fit new O-rings, keep each solenoid in its original bore, and clear adapts afterward.
Dexron VI, with the level set hot at the level set plug after cycling through the ranges, following GM and ATRA procedure.
