Case Extension Housing: Removal
- Disconnect the negative battery cable. Raise and support the vehicle.
- Disconnect the right drive axle from the transaxle. See appropriate AXLE SHAFTS article in DRIVELINE/AXLES. Remove the transaxle brace. See TRANSAXLE BRACE
under REMOVAL & INSTALLATION in REMOVAL & INSTALLATION - IMPALA & MONTE CARLO article. Remove the vehicle speed sensor. See VEHICLE SPEED SENSOR
. Remove the case extension housing bolts. See Fig 1
.
- Remove the case extension housing with axle seal and the O-ring. Inspect the case extension housing for the following conditions:
- Damaged or porous sealing surface for the case extension seal.
- Damaged or porous sealing surface for the vehicle speed sensor.
- Damaged or porous sealing surface for the right drive axle oil seal.
- Damaged or porous sealing surface for the case extension housing.
- Damaged or worn differential carrier bushing or output shaft bearing.
- Damaged bolt holes.
- Inspect the drive axle seal and replace if necessary.
Courtesy of GENERAL MOTORS CORP.