6T45 Clutch Drum 2012-2021, new and ready to install. Fits the 6T45. Ships fast from the USA.
A 6T45 that came apart with a broken 3-5-R wave plate usually takes the drum with it. If you have a 2012-2021 Equinox, Terrain, Malibu or another GM with the 6T45 on the bench and the outer splines of the 4-5-6 drum are chewed, notched or cracked, this is the replacement housing. It is a new ACDelco 4-5-6 clutch drum, OE number 24263527, built for the updated 2012-2021 6T40/6T45 units. The listing also cross-references 24230736, 24230760 and 24230761. You get the drum only, as the photo shows: the machined aluminum housing with no shaft, piston or plates.
The 6T45 is the higher-torque version of GM's six-speed front-drive transaxle, the one bolted behind the 2.4L in the Equinox and Terrain. Like the 6T40, it makes each gear by holding two clutches at once. The 4-5-6 drum does two jobs. Inside, it has the O-ring groove and bore for the 4-5-6 clutch piston, so it is part of the oil circuit that applies 4th, 5th and 6th. Outside, it has 36 lugs that carry the 3-5-R clutch, which is applied in 3rd, 5th and reverse. That means the drum handles torque in five of the seven ranges, and it is what the 3-5-R wave plate sits against.
That wave plate is the well-known weak point. Sonnax's research on Gen 1 to Gen 3 6T40/45/50 units found that OE wave plates crack at the tooth corners. When one breaks apart, the pieces hammer the drum splines. That is why a drum with damaged lugs often turns up even when the original failure was only a cheap plate.
Scan for codes and note which ranges slip. A problem only in reverse, 3rd and 5th points at the 3-5-R side. A problem only in 4th through 6th points at the 4-5-6 side. Check fluid level and condition first. On these units, a low level from the converter seal leak GM addressed in 2013 can mimic clutch slip. Our 6T40/6T45 common problems guide walks through the codes. Our delayed engagement guide covers the low-fluid and pressure causes to rule out. Once the unit is apart, look at the drum's outer lugs. If they are stepped, peened over or broken at the tips, a new plate will not stay put and the drum has to be replaced.
This drum is listed for 2012-2021 6T40 and 6T45 transmissions. Those are the updated units built after GM's 2012 changeover. GM's own bulletins show the changeover had exceptions, so check what you have before ordering. Hold the new part up against the old one and compare the lug count, the piston bore and any number cast or stamped on it, or send us your year and VIN. A 2008-2011 Gen 1 unit takes the earlier drum we list as the 6T45 clutch drum for 2008-up. The same 24263527 drum is also on our 6T40 2012-2021 page.
| Fits | 6T45 2012-2021 |
| Part type | Clutch Drum |
| Condition | New |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
It is listed for 2012-2021 units. A 2010 Equinox is normally an early Gen 1 transmission, which uses the earlier drum on our 6T45 2008-up page. Compare the old part to the photo, or send your VIN and we will check it.
No. This is the bare 4-5-6 drum (GM 24263527). Move your piston over or install a new one with new seals. The plates, wave plate and snap rings come from a rebuild kit.
Only if the outer lugs are damaged. If the plate broke but the lugs are still square and clean, a new updated plate can go back into the old drum. If the lug tips are hammered or broken off, replace the drum or the new plate will hang up and fail again.
Dexron VI only. GM lists a 4.2-6.3 quart change capacity for the 6T40 family. A full rebuild takes more than that, so set the final level hot at the level check plug instead of going by quarts.
Slipping in reverse, 3rd and 5th often sets P0776. Slipping in the top gears tends to set gear ratio codes such as P0734 or P0735. A code tells you which clutch is slipping, not which part failed, so confirm by teardown or a pressure check.
