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 497 (POWER STEERING SYSTEM)
1999 GMC Forward Control 5.7 R, Automatic
Section 497 (Power Steering System)
1999 GMC Forward Control 5.7 R, AutomaticSECTION Section 497 (Power Steering System)
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.
- Specifications
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Power Steering System
- Symptoms - Power Steering System
- Power Steering System Test Procedure
- Power Steering Fluid Leaks
- Rattle, Clunk, or Shudder Noise from the Power Steering System
- Whine or Growl Noise from the Power Steering System
- Steering Effort Hard in One or Both Directions
- Steering Effort Too Easy in One or Both Directions
- Repair Instructions
- Bleeding the Power Steering System
- Checking & Adding Power Steering Fluid
- Flushing Power Steering System
- Power Steering Pulley Replacement
- Power Steering Pump Replacement (2.2L)
- Power Steering Pump Replacement (4.3L)
- Power Steering Reservoir Replacement - Off Vehicle (CB Series)
- Power Steering Reservoir Replacement - Off Vehicle (P Series)
- Power Steering Pump Flow Control Valve Replacement - Off Vehicle (CB Series)
- Power Steering Pump Flow Control Valve Replacement - Off Vehicle (P Series)
- Pitman Shaft Seal Replacement - On Vehicle (RWD)
- Pitman Shaft Seal Replacement - On Vehicle (4WD)
- Power Steering Cooler Pipe/Hose Replacement (2.2L)
- Power Steering Cooler Pipe/Hose Replacement (4.3L)
- Power Steering Cooler Replacement (2.2L)
- Power Steering Cooler Replacement (4.3L)
- Power Steering Pressure Hose Replacement (2.2L)
- Power Steering Pressure Hose Replacement (4.3L)
- Power Steering Return Hose Replacement (2.2L)
- Power Steering Return Hose Replacement (4.3L)
- Power Steering Gear Replacement (RWD)
- Power Steering Gear Replacement (4WD)
- Worm Thrust Bearing Preload Adjustment - Off Vehicle (700 Gear)
- Pitman Shaft Over-Center Preload Adjustment - Off Vehicle (700 Gear)
- Steering Gear Pitman Shaft and Housing Cover Replacement - Off Vehicle (700 Gear)
- Steering Gear Housing End Plug Replacement - Off Vehicle
- Steering Gear Valve Replacement - Off Vehicle (700 Gear)
- Rack Piston and Worm Shaft Replacement - Off Vehicle (700 Gear)
- Pitman Shaft Seals and Bearing Replacement - Off Vehicle (700 Gear)
- Steering Gear Check Valve Replacement - Off Vehicle
- Steering Gear Thrust Support Replacement - Off Vehicle (700 Gear)
- Description and Operation
- Special Tools & Equipment
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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.