4T65E Clutch Drum, remanufactured and ready to install. Fits the 4T65E. Ships fast from the USA.
If your Impala, Grand Prix, LeSabre, Century or Monte Carlo pulls fine in first, then flares or slides on the 1-2 shift and feels weak in every gear above that, the 4T65E second clutch drum is one of the hard parts a rebuilder looks at first. This is a remanufactured 4T65E 2nd clutch drum, GM part number 19331468, the late 1997 and up design with square lugs for the clutch plates and a deep oil groove between the sealing rings. It is a drum, not a complete rebuilt clutch pack, so plan on new frictions, steels and seals to go in it.
In the 4T65E the second clutch is the clutch that comes on for the 1-2 upshift and then stays applied through third and fourth. The drum is the housing for that pack: the steel plates lock into the square lugs inside it, the piston sits in its bore, and apply oil reaches the piston through the hub where the sealing rings ride. The reverse band also wraps around the outside of this drum, so its outer surface has a second job as a band friction surface.
That layout explains why a worn drum causes so much trouble. If the ring area on the hub wears, apply oil leaks past the rings, the pack never clamps hard, and the frictions burn. Because the clutch is held for three gears, a small leak becomes slip in second, third and fourth all at once. A scored or ridged outer surface can also chew up a new reverse band.
Transmission Digest explains how the 4T65E computer watches turbine and output speed to time each shift and to flag slip, which is why a leaking 2nd clutch circuit often shows up first as long shifts and adaptive pressure that keeps climbing.
Start with the easy items: correct fluid level checked hot, fluid smell and color, and a scan for codes. A sticking pressure control (EPC) solenoid causes long, soft shifts on this unit too, and it is far cheaper to replace, so read our 4T65E pressure control solenoid guide before you pull the transaxle. If pressure and solenoids check out and the slip pattern matches the gears the 2nd clutch serves, the problem is inside.
With the unit apart, air-check the 2nd clutch through its feed. Heavy air leakage at the drum, wear marks on the hub where the rings ride, a cracked housing, or a raised edge on the band surface all mean the drum should be replaced rather than re-lined. Our 4T65E slipping guide walks through separating clutch slip from hydraulic faults, and the 4T65E common problems guide covers the valve body wear that can mimic it.
This drum is listed for the GM 4T65E transaxle, late 1997 and up, under GM part number 19331468. The 4T65E went into GM front-drive cars such as the Chevrolet Impala and Monte Carlo, Pontiac Grand Prix, and Buick LeSabre, Century and Lucerne. Note the late 1997 wording: early 1997 units and some heavy-duty versions used different internal parts, so compare your old drum before you order. Check the lug shape, the oil groove between the ring lands, and any number cast or stamped on the housing. If you are not sure, send us your year and VIN and we will check it. You can see every part we carry for this unit on our 4T65E parts page.
If the old pack burned because of low line pressure, fix that too. A tired pressure control solenoid will burn a brand new 2nd clutch the same way it burned the old one.
| Fits | 4T65E |
| Part type | Clutch Drum |
| Condition | Remanufactured |
| Brand | GM |
| Reference | 19331468 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 2nd clutch applies on the 1-2 shift and stays on in third and fourth. A leaking or cracked drum usually shows as slip in second, third and fourth while first and reverse drive normally.
It is listed for late 1997 and up 4T65E units. Early 1997 transaxles can use different internals, so compare the lug style, the oil groove between the sealing rings and any number on your old drum, or send us your year and VIN to check.
No. This is a remanufactured drum housing, GM part number 19331468. Plan to install new 2nd clutch frictions, steels, piston seals and sealing rings, usually from an overhaul or rebuild kit.
The reverse band wraps around the outside of the 2nd clutch drum. If that surface is scored or has a raised edge, it can damage the band. Inspect the band and replace it if it is glazed or worn.
GM specifies DEXRON-VI for the 4T65E. Check the level hot. After the repair, clear the shift adapts and drive 50 to 100 normal shifts so the computer can relearn shift pressures.
