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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 802 (POWER STEERING SYSTEM)
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Section 802 (Power Steering System)
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Section 802 (Power Steering System)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. 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 (Without Hydraulic Brake Booster)
- Whine or Growl Noise from the Power Steering System (With Hydraulic Brake Booster)
- 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 and Adding Power Steering Fluid (Without Hydroboost)
- Checking and Adding Power Steering Fluid (With Hydroboost)
- Flushing the Power Steering System
- Power Steering Pulley Replacement
- Power Steering Pump Replacement (4.8 L, 5.3 L and 6.0 L Engines)
- Power Steering Pump Replacement (8.1 L)
- Power Steering Reservoir Replacement - Off Vehicle
- Power Steering Pump Flow Control Valve Replacement - Off Vehicle (Regular)
- Power Steering Pump Flow Control Valve Actuator Replacement - On Vehicle
- Power Steering Cooler Pipe/Hose Replacement (Without Hydroboost)
- Power Steering Cooler Pipe/Hose Replacement (With Hydroboost)
- Power Steering Gear Inlet Hose Replacement (With Hydroboost)
- Power Steering Gear Inlet Hose Replacement (Without Hydroboost)
- Power Steering Gear Outlet Hose Replacement (Recirculating Ball)
- Power Brake Booster Inlet Hose Replacement
- Power Brake Booster Outlet Hose Replacement
- Power Steering Gear Replacement (Non-Rack and Pinion)
- Steering Gear Stub Shaft Seals and Bearing Replacement - Off Vehicle
- Worm Thrust Bearing Preload Adjustment - Off Vehicle
- Pitman Shaft Over-Center Preload Adjustment - Off Vehicle
- Steering Gear Pitman Shaft and Housing Cover Replacement - Off Vehicle (700 Gear)
- Steering Gear Pitman Shaft and Housing Cover Replacement - Off Vehicle (670 Gear)
- Steering Gear Housing End Plug Replacement - Off Vehicle
- Steering Gear Valve Replacement - Off Vehicle
- Rack Piston and Worm Shaft Replacement - Off Vehicle (700 Gear)
- Pitman Shaft Seals and Bearing Replacement - Off Vehicle (670 Gear)
- Pitman Shaft Seals and Bearing Replacement - Off Vehicle (700 Gear)
- Steering Gear Check Valve Replacement - Off Vehicle
- Stub Shaft Housing Replacement (670 Gear)
- Stub Shaft Housing Replacement (680 Gear)
- Steering Gear Thrust Support Replacement - Off Vehicle
- Description and Operation
- Special Tools and 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.