GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Astro - 2WD 🢒 Driveline/Axle 🢒 Front Drive Axle 🢒 Front Drive Axle Inner Shaft and Inner Shaft Housing Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the right side wheel drive shaft. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
  3. Disconnect the inner axle shaft from the differential case side gear.

    4. Object Number: 161379 Size: SH
  4. Remove the bolts, the nuts, and the washers from the inner axle shaft housing.
  5. Remove the inner axle shaft housing to differential carrier assembly bolts.
  6. Remove the inner axle shaft and housing from the differential carrier assembly.
  7. Remove the inner axle shaft from the inner axle shaft housing.
  8. Remove the inner axle seal and the bearing from the axle housing, if necessary. Refer to Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement .

Installation Procedure
  1. Install the new inner axle shaft bearing and the seal to the axle housing. Refer to Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement .
  2. Install the inner axle shaft into the inner axle shaft housing.
  3. Apply sealant (GM P/N 1052942 or equivalent) to the inner axle housing to differential carrier sealing surface.
  4. Install the inner axle shaft housing to the differential carrier assembly.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the inner axle shaft housing bolts.

    6. Tighten the bolts finger tight.


    Object Number: 161379 Size: SH
  6. Install the inner axle shaft housing to the frame bracket bolts, washers, and the nuts.

    7. Tighten

        • Tighten the inner axle shaft housing to frame bracket nuts to 73 N·m (54 lb ft).
        • Tighten the inner axle shaft housing bolts to 48 N·m (36 lb ft).
  7. Install the right side wheel drive shaft. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
  8. Inspect the axle lubricant level and add, if necessary. Refer to Lubricant Level Check .
  9. Lower the vehicle.