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)REPAIR INSTRUCTIONSPOWER STEERING PULLEY REPLACEMENTINSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure

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.

Place the power steering pump pulley on the end of the power steering pump shaft.
Install the power steering pump pulley using J 25033-C .

Fig 1: Installing Power Steering Pulley
Courtesy of GENERAL MOTORS CORP.
Ensure that the power steering pump pulley is flush against the power steering pump shaft, with an allowable variance of 0.25 mm (0.010 in).

Fig 2: Identifying Power Steering Pump Pulley Installation Position

Courtesy of GENERAL MOTORS CORP.

Install the drive belt. For 4.8L, 5.3, and 6.0L engines, refer to DRIVE BELT REPLACEMENT -- ACCESSORY or for 8.1L engines, refer to DRIVE BELT REPLACEMENT -- ACCESSORY .
Install the upper fan shroud. Refer to FAN SHROUD REPLACEMENT -- UPPER (W/O M74) or FAN SHROUD REPLACEMENT -- UPPER (W/M74) .

RENDER: 1.0x

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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.