GM factory 4L60E and 4L65E two-wheel-drive tail housing with the rear output shaft seal fitted, for replacing a worn tailshaft bushing.
If the back of your two-wheel-drive Silverado, Sierra, Tahoe, S10 or Camaro is wet with red fluid, a new rear seal lasted only a few weeks, or you hear a grind from under the console at highway speed, the 4L60E tail housing is where to look. This is GM part number 24241496, the factory 2WD extension housing for the 4L60E and 4L65E, and it comes with the bushing pressed in and the rear output shaft seal already fitted. Instead of driving out a worn bushing under the vehicle, you bolt on a complete new housing.
On a 2WD 4L60E the output shaft runs out the back of the case into this cast aluminum extension. The driveshaft slip yoke slides over the output shaft splines and rides on the bushing inside the housing, while the seal at the rear lip keeps fluid in. The bushing, not the seal, keeps the yoke centered. The housing also carries the boss for the vehicle speed sensor, which reads the reluctor rotor on the output shaft. When the bushing wears oval the yoke starts to orbit, the seal lip gets pushed off to one side, and fluid walks out. A 2WD housing is a different part from the 4WD adapter that bolts to a transfer case, so make sure your truck is a true two-wheel-drive application.
Check the fluid level hot first, then get under the vehicle and look at where the wet trail starts. A leak that begins at the rear lip and runs down the housing is the seal; one that starts at the housing-to-case joint is the gasket. Grab the driveshaft next to the yoke and lift. More than a slight amount of play means the bushing is worn. Pull the driveshaft and inspect the yoke: a polished stripe on one side, scoring or a step worn into the sealing surface means the yoke must be replaced as well, or it will wear the new bushing and seal just like the old ones. If the truck also has shifting complaints, our 4L60E shift problem diagnosis guide walks through what low fluid does to the clutch packs.
This housing is listed for GM 4L60E and 4L65E two-wheel-drive applications. That covers the rear-drive Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban, S10, Sonoma, Blazer and Camaro families that used these transmissions, but tail housing length and driveshaft length are matched to each vehicle, so compare your old housing against the photo before you order. Match the length, the speed sensor boss location and the casting, or send us your year and VIN and we will confirm it. Browse the full 4L60E parts collection for other rear-end hardware.
If you are doing this housing as part of a rebuild or 4WD-to-2WD conversion, the 4L60E overhaul gasket and seal kit covers the rest of the sealing surfaces, and a master rebuild kit with filter adds the frictions for a unit that has been run low on fluid.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. This is the two-wheel-drive extension housing. On 4WD 4L60E trucks the case bolts to a transfer case adapter instead. Shops do use this part to convert a 4WD core to 2WD, but driveshaft length then has to match.
Yes. The bushing is pressed in at the factory and the rear output shaft seal is already fitted, so you do not need a bushing driver to install it.
If the yoke shows a worn step, scoring or a polished stripe on one side, yes. A worn yoke will chew up the new bushing and seal. A smooth, round yoke can be reused.
The hole for the speed sensor retaining bolt comes untapped on this casting. Run a 6 mm tap through it before the housing goes on the case; it takes about a minute on the bench.
Use Dexron VI, which is backward compatible with earlier Dexron-spec 4L60E units. Top up to replace what you lost and check the level hot with the engine running in park.
