6T40 Clutch Module 2008-11, new other (see details) and ready to install. Fits the 6T40. Ships fast from the USA.
If you are pulling apart a 6T40 or 6T45 out of a 2008-2011 Malibu, Equinox, Terrain or early Cruze because it lost reverse, flares into third and fifth, or burned up after a long slip, this is the complete clutch side of the job in one box. It is a super master kit, not just a friction pack: the overhaul gasket and seal set, friction and steel clutch plates, pistons and a filter. The kit carries part number KP52900ZCX and lists interchange number 24230708. It is listed as new other: unused, but it may not arrive in its original retail packaging.
The 6T40 makes six forward speeds and reverse with five clutches: 1-2-3-4, 3-5-reverse, 4-5-6, 2-6 and low/reverse, two of them on at a time. Each pack is a stack of friction and steel plates squeezed by a piston, and the transmission computer judges every shift by how quickly input speed changes. That is why a single tired pack takes out a whole pattern of gears. Worn 3-5-reverse frictions or a leaking piston seal show up in third, fifth and reverse together, and the computer logs P0776. Renewing all five packs with fresh steels and new pistons puts every clutch back at its designed apply rate. Including the pistons matters here, because GEARS Magazine recommends always replacing the bonded pistons when a 6T40/45 is rebuilt, and a cracked 1-2-3-4 piston is a known cause of P2723.
Early units have control-side faults that copy clutch slip. Gen 1 pressure switches inside the control module were a known weak point until GM removed them in 2012, and a damaged filter plate can make the 1-2 flare to neutral. Check the fluid level at the check plug hot, read codes and live data, and rule out the solenoids first with our 6T40 shift solenoid guide. If you do have wave plate debris, read the 6T40 common problems guide before ordering, because Sonnax reports that a broken plate often chews the drum splines and forces a new housing.
The listing covers 2008-2011 6T40, 6T45 and 6T50 units, which in GM terms are first-generation transmissions. Be careful here. GM's 2012 product update changed the valve body, removed a seal ring and revised the 4-5-6 clutch, and the packing data on this kit calls out a later-generation build, which conflicts with the year range in the title. Do not order on year alone. Count the plates in your 4-5-6 pack, compare the drum, or send us your year and VIN and we will confirm the generation before it ships. For a Gen 1 friction module listed through 2013, see the 6T40 clutch module 2008-2013.
Soak every friction in DEXRON VI for at least 30 minutes, lubricate the new piston seals before pressing the pistons home, and set each clutch clearance with a feeler gauge or dial indicator. Inspect the 3-5-reverse wave plate and the drum splines under good light, and do not mix a Gen 2 4-5-6 drum into a Gen 1 case, which GEARS has documented causing shift problems that only appear on the road. Refill with DEXRON VI, check the level at 85-95 degrees C, then clear adapts and run a fast learn. A 6T40 spacer plate and gasket kit and a 6T45 sprag clutch are the two parts most worth adding while the case is open.
| Fits | 6T40 2008-11 |
| Part type | Clutch Module |
| Condition | New Other (See Details) |
| 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.
No. It is a super master kit: overhaul gaskets and seals, friction and steel plates, pistons and a filter. It covers the soft parts and clutch packs of a full rebuild.
The title covers 2008-2011, but the kit's packing data calls out a later-generation build. Send us your year and VIN, or count the plates in your 4-5-6 clutch, and we will confirm it before shipping.
It is not listed as including the wave plate or drum. Inspect both closely. A broken wave plate often damages the drum splines, and in that case the housing needs replacing.
DEXRON VI. Set the level at the check plug with the fluid at 85-95 degrees C. A fluid change uses about 4 to 6 liters, and a dry rebuild needs more.
Yes. Clear the transmission adapts and run the fast learn procedure. Without it the computer will try to run the old clutch fill values and the shifts can be harsh or soft.
