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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 486 (REAR DRIVE AXLE)REPAIR INSTRUCTIONSREAR AXLE HOUSING REPLACEMENTINSTALLATION PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the new differential side bearings to the differential assembly. Refer to DIFFERENTIAL SIDE BEARINGS REPLACEMENT  .
  2. Determine the selective shim thickness for the drive pinion. Refer to PINION DEPTH ADJUSTMENT  .
  3. Install the new drive pinion bearings. Refer to DRIVE PINION BEARINGS REPLACEMENT  .
  4. Install the drive pinion. Refer to DRIVE PINION AND RING GEAR REPLACEMENT  .
  5. Install the new drive pinion yoke oil seal and drive pinion yoke. Refer to DRIVE PINION FLANGE/YOKE AND/OR OIL SEAL REPLACEMENT  .
  6. Install the differential assembly. Refer to DIFFERENTIAL REPLACEMENT  .
  7. Install the new rear axle shaft bearings and oil seals. Refer to REAR AXLE SHAFT SEAL AND/OR BEARING REPLACEMENT  .
  8. Install the axle housing assembly to the rear springs. Refer to LEAF SPRING REPLACEMENT in Rear Suspension.
  9. For vehicle with disc brake systems, install the following components:
    1. 9.1. Install the brake pipe to the axle housing.
    2. 9.2. Install the backing plates. Refer to DISC BRAKE BACKING PLATE -- REAR in Disc Brakes.
    3. 9.3. Install the brake rotors. Refer to BRAKE ROTOR -- REAR in Disc Brakes.
    4. 9.4. Install the brake calipers. Refer to BRAKE CALIPER -- REAR in Disc Brakes.
    5. 9.5. Connect the brake caliper hose to the brake pipe. Refer to BRAKE HOSE in Hydraulic Brakes.
  10. For vehicles with drum brake systems, install the following components:
    1. 10.1. Install the rear backing plates to the axle housing. Refer to DRUM BRAKE BACKING PLATE in Drum Brakes.
    2. 10.2. Connect the brake lines to the axle housing.
    3. 10.3. Install the axle shafts. Refer to REAR AXLE SHAFT REPLACEMENT  .
    4. 10.4. Install the brake drums. Refer to BRAKE DRUM in Drum Brakes.
  11. Install the rear axle housing cover and new gasket. Refer to REAR AXLE HOUSING COVER AND GASKET REPLACEMENT  .
  12. Install the right rear park brake cable in the cable guide on the rear axle.
  13. Connect the park brake cables. Refer to PARK BRAKE CABLE -- FRONT or PARK BRAKE CABLE -- REAR RWD PICKUPS in Park Brake.
  14. Install the propeller shaft. Refer to the appropriate procedure in Propeller Shaft:
    • PROPELLER SHAFT REPLACEMENT - ONE PIECE
    • PROPELLER SHAFT REPLACEMENT - TWO PIECE
  15. Connect the shock absorbers to the axle brackets. Refer to SHOCK ABSORBER REPLACEMENT in Rear Suspension.
  16. Connect the vent hose to the axle housing.
  17. Install the rear tires and wheels assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  18. Fill the axle with lubricant. Use the proper fluid. Refer to LUBRICANT REPLACEMENT - REAR DRIVE AXLE  .
  19. Bleed the brakes system, disc brake systems only. Refer to HYDRAULIC BRAKE SYSTEM -- MANUAL BLEEDING or HYDRAULIC BRAKE SYSTEM -- PRESSURE in Hydraulic Brakes.
  20. Remove the safety stands.
  21. Lower the vehicle.
  22. Test drive vehicle and check for leaks.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.