Extension Housing Assembly: Installation

1. Install a new case extension O-ring seal (3). Install the case extension (2). See Fig 2 .
2. Install the case extension bolts (1). Tighten the case extension bolts (1) to specification. See TORQUE SPECIFICATIONS  .
3. Install the rear transmission or transfer case mounting bolts (1). Tighten bolts to specification. See TORQUE SPECIFICATIONS  . Lower the transmission. Install the transmission mount to the transmission support retaining nut or nuts. See Fig 1 . Tighten the nut or nuts to specification. See TORQUE SPECIFICATIONS  .
4. Install the propeller shaft. Remove the drain pan and the transmission jack. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION  .

Fig 1: Removing Transmission Mount

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing & Installing Extension Housing

Courtesy of GENERAL MOTORS CORP.