Service Procedure

Inspection

1. Raise vehicle on hoist.

2. Inspect rear axle code stamped on top of right axle tube outboard of carrier.

KHA G 001 1

Axle & Vehicle Code SOURCE CODE DATE CODE Shift Code

G = Gear & Axle Jan. 1 = 001 1st Shift

A. When the source code is "W", "C" or "K", lower the vehicle and install the campaign completion label. No further action is required.

B. When the source code is "G", proceed with the following modification.

3. Clean all dirt from around carrier cover.

4. Drain lubricant from carrier by removing cover.

FIGURE 1:

5. Rotate the case to the position shown in Figure 1. Support the differential pinion shaft so that it cannot fall into the case and remove the differential pinion shaft lock screw and discard.

6. Clean the case assembly of any excessive lubricant in the threaded area of the lock screw hole.

7. Install the new lock screw, P/N 14056196, which is coated with an adhesive patch and torque to 25 ft.lb.

8. Clean the carrier and cover of any old gasket material.

9. Install new gasket, P/N 3993593, and torque cover attaching bolts to 20 ft.lbs. Torque carrier cover bolts in a clockwise pattern to insure uniform draw on cover gasket.

10. Fill axle with 4.2 pints of lubricant, P/N 1052271 (24 oz. container) or P/N 1052272 (15 gal. container).
11. Lower vehicle.

12. Open hood and install campaign label according to instructions contained in this bulletin.

VEHICLE MUST REMAIN STATIONARY FOR AT LEAST TWO(2) HOURS FOLLOWING SERVICING INVOLVING LOCK SCREW INSTALLATION TO INSURE CURING OF ADHESIVE ON SCREW THREADS. HOWEVER, VEHICLE CAN BE MOVED FROM SERVICE AREA TO AN ONSITE PARKING AREA IF SUCH DRIVING IS MODERATE AND PERFORMED IMMEDIATELY AFTER COMPLETION OF AXLE SERVICING.
PARTS INFORMATION

Parts required to complete this campaign are to be obtained by the dealer from your Warehousing and Distribution Division of General Motors.

Part Number Quantity Description

14056196 1 Pinion Shaft
Locking Screw
3993593 1 Cover Gasket