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 4WD L6-4.2L VIN SREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLESERVICE AND REPAIROVERHAULREPAIR INSTRUCTIONS42. INPUT HOUSING AND SHAFT ASSEMBLY INSPECTION
2003 Chevrolet TrailBlazer 4WD L6-4.2L VIN S
42. Input Housing and Shaft Assembly Inspection
2003 Chevrolet TrailBlazer 4WD L6-4.2L VIN SSECTION 42. Input Housing and Shaft Assembly Inspection
1. Inspect the input housing and shaft assembly for the following items:
^ Porosity
^ Spline wear
^ Three turbine shaft checkballs
^ Retainer and checkball assembly (620) Orifice cup plug (698)
^ Lube hole cracks
2. Inspect the turbine shaft oil seal ring grooves for damage or burrs. The oil seal rings (619) must fit loose into the ring grooves.
3. Inspect the oil feed passages for obstructions.
4. Blow air through the passages.
RENDER: 1.0x
NO RELATED
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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.