6T40 Banner Rebuild Kit 2010-11, new and ready to install. Fits the 6T40. Ships fast from the USA.
A 2010 or 2011 Chevrolet Malibu, a first-year Cruze or another GM front-driver with the six-speed 6T40 or 6T45 usually lands on the bench for one of three reasons: it lost reverse, it flares between gears once warm, or it leaks from more places than one gasket can explain. This banner rebuild kit is listed for 2010-2011 6T40/6T45 units, and it goes further than a plain reseal. Along with the overhaul gasket and seal set it carries a standard set of friction clutch plates, a standard set of steel plates and new pistons, so the clutch packs and their apply pistons are renewed in the same job.
Each clutch in this transaxle is a stack of frictions and steels squeezed by a hydraulic piston. The TCM watches input and output speed and adjusts pressure through the TEHCM to keep every shift inside a target time. As frictions glaze and piston lips harden, the clutch needs more pressure and more time to lock, and the computer keeps compensating until it runs out of room and sets a code. A banner kit replaces the parts that wear: the friction material, the steels that get heat-marked, the rubber that seals the pistons and the gaskets that keep oil in the case. Including the pistons matters on this family, because GEARS Magazine advises not to reuse the bonded pistons during a 6T40/45 overhaul.
Check the fluid first. These units are level-checked hot at the fill plug, and a low or overfilled case can mimic clutch slip. Scan for codes next. A single solenoid or pressure switch code with clean fluid points to the TEHCM side, which our 6T40 shift solenoid guide covers. Dark fluid, clutch material in the pan and a ratio code like P0776 mean the clutch packs are done, and that is when this kit earns its price. If the complaint is mainly a slow engagement, work through the 6T40 delayed engagement checklist before tearing down.
The listing covers 6T40 and 6T45 transmissions in 2010-2011 GM vehicles, including the Malibu and Cruze. These are first-generation units. GM's Gen 2 update began with 2012 and revised the 4-5-6 clutch and removed the TEHCM pressure switches, so a 2012 or later case should not be assumed to match. Clutch counts can also vary by application within the same years, so read the transmission ID tag and compare your old plates and pistons with the new ones before you start, or send us your year and VIN and we will check it. Every overhaul kit we carry, including the other 6T40/6T45 versions, is on the rebuild kit category page, and the earlier-year version of this kit is the 6T40 banner rebuild kit for 2008-2011.
On 2008-2011 units GM recommends replacing the 3-5-R piston and the waved plate during the overhaul, and Sonnax notes that a broken plate often damages the drum splines, so inspect that housing before you build. Confirm whether your kit includes the waved plate and order one separately if it does not. Soak the new frictions in Dexron VI before assembly, set each clutch pack clearance to spec, and replace any worn bushings while the case is open. The 6T45 sprag clutch for 2008-2013 is worth replacing if the low one-way clutch freewheels in both directions or shows wear. When you put the valve body back on, the DT-50944 valve body locating tool keeps the TEHCM aligned. Fill with Dexron VI only, set the level hot, and run the adaptive learn with a scan tool before you judge the shift feel. Our 6T40 rebuild cost guide lists the hard parts that most often get added once the unit is apart.
| Fits | 6T40 2010-11 |
| Part type | Banner Rebuild Kit |
| Condition | New |
| 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.
Yes. The kit is listed with the overhaul gasket and seal set, a standard set of friction clutch plates, a standard set of steel plates and pistons. Lay the new plates beside your old packs to confirm the counts match your unit.
It is listed for 2010-2011 Gen 1 units. GM's Gen 2 changes started in 2012, so a 2012 or newer transmission needs the matching later kit. Send us your year and VIN if you are unsure.
The 6T40/6T45 uses bonded pistons, and GEARS Magazine advises against reusing them in a rebuild. A kit with new pistons saves ordering them separately and removes a common source of comebacks.
No reverse with P0776 on a 2008-2011 unit usually means the 3-5-R waved plate broke. The case has to come apart, so a kit like this is the right start, but also plan on a new waved plate and check the drum splines.
Use Dexron VI only, set the level hot at the check plug, then run the transmission adaptive learn with a scan tool and road test it before judging the shifts.
