6L45 Clutch Drum 2010-2015, used and ready to install. Fits the 6L45. Ships fast from the USA.
If you have a 2010-2015 Cadillac CTS or ATS with the 6L45 six-speed and the teardown turned up a cracked, scored or leaking 1-2-3-4 / 3-5-Reverse drum, this is the replacement housing. It is a used genuine GM drum, part number 24263588, pulled from a Cadillac 6L45 and sold loaded. Loaded means the clutch packs are still in it as removed, but treat those plates as cores: plan on installing new frictions and steels before the drum goes back in the case. What you are paying for is a sound OEM housing with the right part number, not reusable clutches.
GM's 6L45 is the smallest of the 6L family, the six-speed rear-drive automatic that also includes the 6L50, 6L80 and 6L90. It makes six forward ratios from five clutches plus a low one-way clutch. Two of those clutches share this one drum. According to the Sonnax apply chart for the family, the 1-2-3-4 clutch holds in first through fourth and the 3-5-Reverse clutch holds in third, fifth and reverse. That means the drum is doing work in every gear except sixth. Apply oil comes out of the TEHCM, crosses sealing rings on the stator support and enters the drum, where it strokes the piston for each pack. Any leak in that path, whether a cracked weld, a worn ring land or a damaged piston bore, robs the clutch of holding force and it starts to slip.
Do not condemn the drum from a code alone. On these units a stuck line pressure solenoid, a worn check ball in the 1-2-3-4 feed or a bad TEHCM can all feel like a slipping clutch. Start with the electrical and pressure checks in our 6L45 limp mode guide, and if the car simply will not pull, work through our no-movement diagnosis steps, which apply to the whole 6L family. Once the unit is on the bench, air-check both pistons with the drum seated on the stator support. A hiss from a weld seam or around the drum hub instead of a firm piston thump means the drum itself is leaking. Our 3-5-R clutch failure article shows what that failure looks like inside.
This drum is listed for Cadillac 6L45 automatics from 2010 through 2015, which covers the CTS and the ATS that followed it. GM reference 24263588 is stamped or tagged on the part. The 6L45 was also built for BMW as the GA6L45R, and GM made running changes over the years, so do not assume every 6L45 drum interchanges. Compare the old drum's part number, overall height, spline count and the number of plates in each pack against this one, or send us your year and VIN and we will confirm before it ships. More parts for this unit are on our 6L45 parts page.
| Fits | 6L45 2010-2015 |
| Part type | Clutch Drum |
| Condition | Used |
| Brand | OEM |
| Reference | 24263588 |
| Ships | From the USA |
| Warranty | 1-year |
It is listed for 2010-2015 Cadillac 6L45 transmissions, which includes the CTS with the 6L45. Check that your old drum carries GM 24263588 or matches it in height, splines and plate count. If you are unsure, send your VIN and we will confirm before shipping.
It comes loaded, meaning the clutch packs are still in it as removed from the donor unit. Those plates are not meant to be reused. Install new frictions, steels and seals for both packs.
The 1-2-3-4 clutch works in first through fourth and the 3-5-Reverse clutch works in third, fifth and reverse. A leaking or cracked drum shows up as slipping in those ranges while sixth gear stays solid.
Dexron VI. Do not mix in a universal fluid. After the rebuild, run the clutch adapt relearn with a scan tool so the TEHCM learns the new pack clearances.
Only if the drum is the cause. Limp mode on this unit is often a solenoid, pressure switch or TEHCM fault. Diagnose codes and line pressure first, and replace the drum when an air check proves it leaks.
