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 349 (REAR SUSPENSION SYSTEM)REPAIR INSTRUCTIONSKNUCKLE REPLACEMENT (ALL WHEEL DRIVE)INSTALLATION 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 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Install the wheel speed sensor connector bracket to the knuckle.
- Install the wheel speed sensor connector bracket bolt and nut. Tighten the wheel speed sensor bracket nut to 12 N.m (106 lb in).
- Install the knuckle into the vehicle. See Figure.
- Install the ball joint to the knuckle nut. Tighten ball joint nut to 60 N.m (44 lb ft).
- Connect the upper control arm to the knuckle. See Figure. Tighten the upper control arm nut to 85 N.m (63 lb ft).
- If necessary, connect the height sensor link to the lower control arm.
- Connect the tie rod to the knuckle. Tighten the tie rod nut to 80 N.m (59 lb ft).
- Remove the utility stand supporting the lower control arm.
- Install the wheel bearing/hub. Refer to REAR WHEEL BEARING/HUB REPLACEMENT (ALL WHEEL DRIVE - DISC) .
- Install the rear wheel.
- Lower the vehicle.
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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.