6T45 Overhaul Kit 2014, new and ready to install. Fits the 6T45. Ships fast from the USA.
If your 2014-or-later Malibu, Equinox, Terrain, Regal, LaCrosse, Verano, Encore, Impala or Cruze has a 6T45 or 6T40 that is leaking, engaging late when cold, or slipping on the 1-2 or 3-4 shift with pressure codes stored, the transmission is usually past the point of a pan job. This is the soft-parts kit for the third-generation unit, the version GM built from 2014 on with stop-start capability. It covers the 6T45 (RPO MH7) and the matching 6T40 units of the same generation, and it is the kit number 2735 pattern without pistons.
The 6T45 applies all five of its clutches with hydraulic pistons. Line pressure comes from the pump, is shaped by the control solenoid valve body bolted to the side of the case, and travels through the case, the support and the drums to each piston. Every joint along that path is sealed by a gasket, a lip seal, an O-ring or a sealing ring. When those parts harden from heat or wear grooves into their bores, pressure bleeds away before it reaches the clutch, and the control module sees a slip it cannot correct with adapts. This kit replaces those sealing parts in one teardown.
The third generation added stop-start hardware so the transmission holds a ready-to-launch state while the engine shuts off at a light. That changed parts of the hydraulic and sealing layout, which is why a 2011-2013 kit is not a safe substitute even though the case looks the same from the outside.
Start with the fluid level, because the 6T45 is checked hot at the level set plug, not with a dipstick, and an under- or overfill can mimic seal failure. Our 6T40 delayed engagement guide walks through separating a low-fluid or solenoid problem from internal leakage. Read stored codes and live slip data before you pull the unit. If you are chasing a leak only, our 6T40 and 6T45 leak locations guide helps confirm whether it is an external seal you can reach without a full teardown.
This kit is listed for 2014-up 6T45 (MH7) and 6T40 third-generation transmissions, identified by stop-start capability. Applications on the listing include 2014-2016 Buick Encore, LaCrosse, Regal and Verano, and Chevrolet Cruze, Malibu, Equinox, Impala, Trax and Sonic, plus the GMC Terrain. GM made running changes inside these years, so check the RPO on your glove box service parts label and compare the old gaskets to the new ones before assembly. If your 2014 unit does not have stop-start hardware, send us the year and VIN before ordering. Earlier units take the 6T45 overhaul kit for 2011-2018, and you can browse every 6T kit in our rebuild kits category.
| Fits | 6T45 2014 |
| Part type | Overhaul 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.
The listing identifies Gen 3 as the 2014-up unit with stop-start capability. Check the RPO on your service parts label (MH7 for the 6T45) and whether your vehicle has stop-start. If you are unsure, send us your year and VIN.
No. It is the gasket, seal, O-ring and sealing ring set without pistons. Frictions, steels, pistons, the filter and hard parts are bought separately if your teardown shows they are worn.
The listing covers both the 6T45 and the 6T40 of the third generation, 2014 and newer. Compare the old gaskets and seals to the kit before assembly to confirm.
Dexron VI. GM lists a fluid change capacity of roughly 4.0-6.0 L for this family, but a rebuilt unit takes more because it starts dry. Fill, run it, then set the final level hot at the level set plug.
Yes. Clear the transmission adaptive values with a scan tool and run the relearn drive cycle. Shifts can feel firm or soft for the first drive until the control module re-learns clutch fill.
