General Motors 6T30 Low-speed Reverse One-way Clutch Hub For 2013 And Later Models Of Cruze Sonic 1.8L
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Typical Faults:
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Sprag Spring Fatigue
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Symptom: Harsh reverse engagement or 1-2 shift flare (P0730)
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Cause: Repeated torque reversals weakening springs
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Inner Race Wear
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Symptom: Grinding noise in reverse
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Trigger: Hardened ATF failing to lubricate contact surfaces
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Hub Spline Stripping
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Symptom: No movement in reverse (with forward gears working)
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Root Cause: Improper heat treatment during manufacturing
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Critical Checks:
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Sprag Engagement: Must lock counterclockwise only
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Radial Play: >0.2mm = replacement
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Race Scoring: Visible grooves = immediate failure
Pro Tip: Always replace OWC and hub together – mismatched components cause instant re-failure.

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6T30 one-way clutch hub
,Low speed one-way clutch hub
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