Differential Carrier Assembly Replacement
Differential Carrier Assembly ReplacementRemoval Procedure
1. Raise the vehicle.
2. Place a jack or utility stands, such as GMTG 123-B67313, at the rear end of the vehicle.
3. Drain the fluid from the differential carrier assembly.
4. Disconnect the propeller shaft from the differential carrier assembly.
Support the propeller shaft as necessary.
5. Remove the engine protection shield.
6. Remove the front engine crossmember.
7. Place a transmission jack under the differential carrier assembly.
Secure and support the differential carrier assembly to the transmission jack.
8. Place an alignment mark between the wheel drive shafts and the inner shaft flanges.
9. Remove the wheel drive shaft to inner shaft bolts.
10. Disconnect the left side wheel drive shaft from the inner shaft.
11. Disconnect the right side wheel drive shaft from the inner shaft.
12. Disconnect the differential carrier assembly vent hose from the differential carrier assembly.
13. Remove the upper inner shaft housing mounting bolt.
14. Remove the upper differential carrier assembly mounting bolt.
15. Remove the differential carrier assembly.
Installation Procedure
1. Install the differential carrier assembly to the vehicle.
2. Connect the vent hose to the differential carrier assembly.
3. Install the differential carrier assembly upper mounting bolt and the nut.
Do not tighten the bolt to specification at this time.
4. Install the inner shaft upper mounting bolt and the nut.
Do not tighten the bolt to specification at this time.
5. Install the front engine crossmember.
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.
6. Tighten the upper differential carrier assembly and inner shaft housing mounting bolts.
Tighten the upper differential carrier assembly and inner shaft housing mounting bolts to 85 Nm (63 ft. lbs.).
7. Connect the left side wheel drive shaft to the inner shaft flange.
Align the marks made during removal.
8. Perform the following procedure before installing the wheel drive shaft to inner shaft bolts:
8.1. Remove all traces of the original adhesive patch.
8.2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
8.3. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) to the threads of the bolts.
9. Install the left side wheel drive shaft to inner shaft bolts.
Tighten the wheel drive shaft to inner shaft flange bolts to 50 Nm (37 ft. lbs.)
10. Connect the right side wheel drive shaft to the inner shaft flange.
Align the marks made during removal.
11. Perform the following procedure before installing the wheel drive shaft to inner shaft bolts:
11.1. Remove all traces of the original adhesive patch.
11.2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
11.3. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) to the threads of the bolts.
12. Install the right side wheel drive shaft to inner shaft bolts.
Tighten the wheel drive shaft to inner shaft flange bolts to 50 Nm (37 ft. lbs.)
13. Install the engine protection shield.
14. Connect the propeller shaft to the differential carrier assembly.
15. Fill the differential carrier assembly with the proper lubricant.
16. Remove the jack or utility stands.
17. Lower the vehicle.
18. Inspect the vehicle's Z height and adjust, if necessary.