Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 486 (REAR DRIVE AXLE)REPAIR INSTRUCTIONSREAR AXLE REPLACEMENTREMOVAL PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic
Removal Procedure
1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal 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.
- Raise the vehicle. Refer to JACKING AND LIFTING in General Information.
- Support the rear axle housing in order to relieve tension on the leaf springs.
- Remove the rear tires and wheels assembly. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
- Remove the rear brake drums, if equipped. Refer to DRUM BRAKE SHOE in Drum Brakes.
- Remove the rear brake rotors, if equipped. Refer to BRAKE ROTOR -- REAR in Disc Brakes.
- Remove the rear brake hose mounting bracket bolt at the axle housing. Refer to BRAKE HOSE in Hydraulic Brakes.
- Remove the rear park brake cables. Refer to PARK BRAKE CABLE -- REAR RWD PICKUPS in Park Brake.
- Remove right rear park brake cable from the cable guide on the rear axle.
- Remove the rear backing plates. Refer to DRUM BRAKE BACKING PLATE in Drum Brakes.
- Disconnect the lower mount of the shock absorber. Refer to SHOCK ABSORBER REPLACEMENT
in Rear Suspension.
Important: Do not remove propeller shaft from the slip yoke.
- Remove the propeller shaft attached to the rear drive axle. Refer to the appropriate procedure in Propeller Shaft:
- PROPELLER SHAFT REPLACEMENT - ONE PIECE
- PROPELLER SHAFT REPLACEMENT - TWO PIECE
- Secure the propeller shaft out of the way in order not put stress on the universal joints.
- Remove the rear leaf springs. Refer to LEAF SPRING REPLACEMENT
in Rear Suspension.
Important: Do not remove vent hose attached to frame.
- Disconnect the vent hose from the rear axle housing.
- Lower the axle from the vehicle.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • 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.