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.
2003 Chevrolet TrailBlazer 4.2 S, 4WDFACTORY OEM SERVICE PROCEDURE
Installation Procedure
- Position the power steering pump pulley to the end of the power steering pump shaft.
- Using the J 25033-C, install the power steering pump pulley to the power steering pump.
- Install the power steering pump pulley (1) flush against the end of the power steering pump shaft (2), with an allowable variance of 0.25 mm (0.010 in).
- Install the power steering pump. Refer to POWER STEERING PUMP REPLACEMENT (4.2L) or POWER STEERING PUMP REPLACEMENT (5.3L) .
Factory Service Tools
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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.
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